| Bacteria | | Proteobacteria | Ralstonia solanacearum (bacterial wilt of potato) | Present | | | EPPO, 2014; CABI/EPPO, 1999 |
| Bacteria | | Proteobacteria | Ralstonia solanacearum race 1 (bacterial wilt of solanaceous crops) | Present | | | CABI & EPPO, 1999 |
| Bacteria | | Proteobacteria | Xanthomonas axonopodis pv. phaseoli (bean blight) | Present | | | CABI/EPPO, 2007; EPPO, 2014 |
| Bacteria | | Proteobacteria | Xanthomonas citri (citrus canker) | Eradicated | | | EPPO, 2014; IPPC, 2009; CABI/EPPO, 2014 |
| Bacteria | | Proteobacteria | Xanthomonas oryzae pv. oryzicola (bacterial leaf streak of rice) | Present | | | Bradbury, 1986; EPPO, 2014; CABI/EPPO, 2015 |
| Eukaryota | Chromista | Oomycota | Phytophthora cinnamomi (Phytophthora dieback) | Present | Introduced | | Cahill et al., 2008; EPPO, 2014 |
| Eukaryota | Fungi | Ascomycota | Fusarium oxysporum f.sp. cubense (Panama disease of banana) | Present, few occurrences | Introduced | Yes | EPPO, 2014; CABI/EPPO, 2015 |
| Eukaryota | Fungi | Ascomycota | Seiridium cardinale (cypress canker) | Present | Introduced | | Grasso & Ponchet, 1980; CABI/EPPO, 2014 |
| Eukaryota | Fungi | Ascomycota | Trichoconiella padwickii (stackburn disease) | Present | | | CMI, 1984; Pitkethley, 1970 |
| Eukaryota | Fungi | Ascomycota | Trichoconiella padwickii (stackburn disease) | Present | | | UK CAB International, 1984; Pitkethley, 1970 |
| Eukaryota | Fungi | Basidiomycota | Phakopsora euvitis (grape rust fungus) | Eradicated | | | IPPC, 2015; Weinert et al., 2003; CABI/EPPO, 2007; EPPO, 2014 |
| Eukaryota | Fungi | Basidiomycota | Phakopsora pachyrhizi (soyabean rust) | Present | | | EPPO, 2014; CABI/EPPO, 2015 |
| Eukaryota | Fungi | Basidiomycota | Puccinia horiana (white rust of chrysanthemum) | Present | | | EPPO, 2014 |
| Eukaryota | Fungi | Basidiomycota | Puccinia kuehnii (orange rust) | Restricted distribution | | | CABI/EPPO, 2015 |
| Eukaryota | Fungi | Basidiomycota | Urocystis agropyri (flag smut of wheat) | Present, few occurrences | | | Murray & Brown, 1987 |
| Eukaryota | Metazoa | Arthropoda | Aedes albopictus (Asian tiger mosquito) | Present | Introduced | | ISSG, 2011 |
| Eukaryota | Metazoa | Arthropoda | Aleurodicus destructor (coconut whitefly) | Present | | | NHM, 1996 |
| Eukaryota | Metazoa | Arthropoda | Anoplolepis gracilipes (yellow crazy ant) | Restricted distribution | Introduced | Yes | ISSG, 2011 |
| Eukaryota | Metazoa | Arthropoda | Aonidiella aurantii (red scale) | Present | | | IIE, 1996 |
| Eukaryota | Metazoa | Arthropoda | Aonidiella orientalis (oriental yellow scale) | Present | | | CIE, 1978 |
| Eukaryota | Metazoa | Arthropoda | Aphis craccivora (groundnut aphid) | Present | | | CIE, 1983 |
| Eukaryota | Metazoa | Arthropoda | Aphis gossypii (cotton aphid) | Present | | | UK CAB International, 1968; Carver, 1996 |
| Eukaryota | Metazoa | Arthropoda | Aspidiotus destructor (coconut scale) | Present | | | CIE, 1966; CSIRO, 2001 |
| Eukaryota | Metazoa | Arthropoda | Austrominius modestus | Present | Native | | Darwin, 1854; Gruvel, 1905 |
| Eukaryota | Metazoa | Arthropoda | Bactrocera dorsalis (Oriental fruit fly) | Eradicated | | | Allwood, 1997; Smith, 2000; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Bactrocera tryoni (Queensland fruit fly) | Present | | | CABI/EPPO, 1999; Cameron et al., 2010; EPPO, 2014; Hancock et al., 2000 |
| Eukaryota | Metazoa | Arthropoda | Bemisia tabaci (tobacco whitefly) | Present | | | EPPO, 2014; Carver & Reid, 1996 |
| Eukaryota | Metazoa | Arthropoda | Bemisia tabaci (MEAM1) (silverleaf whitefly) | Widespread | | | de Barro, 1995; EPPO, 2014; Gunning el al., 1997 |
| Eukaryota | Metazoa | Arthropoda | Blattella germanica (German cockroach) | Present | Introduced | | Council of Heads of Australasian Herbaria, 2016 |
| Eukaryota | Metazoa | Arthropoda | Brontispa longissima (coconut hispine beetle) | Present | | | Anon, 1981a; Jones & Elliot, 1986; EPPO, 2014; CABI/EPPO, 1998 |
| Eukaryota | Metazoa | Arthropoda | Ceratitis capitata (Mediterranean fruit fly) | Absent, intercepted only | | | Hancock et al., 2000; CABI/EPPO, 2015 |
| Eukaryota | Metazoa | Arthropoda | Charybdis hellerii | Widespread | Native | | Stephenson et al., 1957 |
| Eukaryota | Metazoa | Arthropoda | Cherax destructor (yabby) | Present | Native | | Lawrence & Jones , 2002; Austin et al., 2003; Lynas et al., 2007 |
| Eukaryota | Metazoa | Arthropoda | Cherax quadricarinatus (redclaw crayfish) | Present | | | Lawrence & Jones, 2002 |
| Eukaryota | Metazoa | Arthropoda | Chilo suppressalis (striped rice stem borer) | Present | Introduced | | EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Chrysomphalus aonidum (circular scale) | Present | | | CIE, 1988; CSIRO, 2001; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Chrysomya bezziana (Old World screw-worm) | Absent, intercepted only | | | Rajapaksa & Spradbery, 1989 |
| Eukaryota | Metazoa | Arthropoda | Conopomorpha cramerella (cocoa pod borer) | Eradicated | | | CIE, 1984; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Culex quinquefasciatus (southern house mosquito) | Widespread | Introduced | | Lee et al., 1989 |
| Eukaryota | Metazoa | Arthropoda | Cylas formicarius (sweet potato weevil) | Present | | | CABI/EPPO, 2004; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Diaphorina citri (Asian citrus psyllid) | Absent, formerly present | | | EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Dysmicoccus brevipes (pineapple mealybug) | Present | | | Ben-Dov, 1994 |
| Eukaryota | Metazoa | Arthropoda | Ferrisia virgata (striped mealybug) | Present | | | Williams, 1985; Ben-Dov, 1994; CIE, 1966 |
| Eukaryota | Metazoa | Arthropoda | Glycaspis brimblecombei (red gum lerp psyllid) | Present | | | EPPO, 2014; CABI/EPPO, 2015 |
| Eukaryota | Metazoa | Arthropoda | Helicoverpa armigera (cotton bollworm) | Present | | | IIE, 1993; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Heliothrips haemorrhoidalis (black tea thrips) | Present | | | CIE, 1961 |
| Eukaryota | Metazoa | Arthropoda | Idioscopus nitidulus (mango leafhopper) | Restricted distribution | Introduced | | Fletcher & Dangerfield, 2002 |
| Eukaryota | Metazoa | Arthropoda | Listroderes costirostris (vegetable weevil) | Present | | | Wilson & Wearne, 1962; CABI & EPPO, 2000; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Maconellicoccus hirsutus (pink hibiscus mealybug) | Present | Introduced | Yes | Goolsby et al., 2002; EPPO, 2014; CABI/EPPO, 2015 |
| Eukaryota | Metazoa | Arthropoda | Monomorium destructor (Singapore ant) | Present | Introduced | Yes | ISSG, 2011 |
| Eukaryota | Metazoa | Arthropoda | Myzus persicae (green peach aphid) | Present | | | CIE, 1979 |
| Eukaryota | Metazoa | Arthropoda | Nezara viridula (green stink bug) | Restricted distribution | | | Clarke, 1992; CABI/EPPO, 1998 |
| Eukaryota | Metazoa | Arthropoda | Nipaecoccus viridis (spherical mealybug) | Present | | | CABI/EPPO, 2005; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Palaemon macrodactylus (oriental shrimp) | Unconfirmed record | | | Bruce & Coombes, 1997 |
| Eukaryota | Metazoa | Arthropoda | Papilio demoleus (chequered swallowtail) | Widespread | | | Common & Waterhouse, 1981 |
| Eukaryota | Metazoa | Arthropoda | Paratrechina longicornis (crazy ant) | Present | Introduced | Yes | ISSG, 2011 |
| Eukaryota | Metazoa | Arthropoda | Pectinophora gossypiella (pink bollworm) | Present | | | IIE, 1990; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Pheidole megacephala (big-headed ant) | Present | Introduced | Yes | Vanderwoude et al., 2000 |
| Eukaryota | Metazoa | Arthropoda | Phoracantha recurva (eucalyptus longhorned borer) | Widespread | Native | | Wang, 1995; CABI/EPPO, 2009; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Phoracantha semipunctata (eucalyptus longhorned borer) | Present | | | EPPO, 2014; CABI/EPPO, 2007 |
| Eukaryota | Metazoa | Arthropoda | Phthorimaea operculella (potato tuber moth) | Present | | | CABI/EPPO, 2012 |
| Eukaryota | Metazoa | Arthropoda | Phyllocnistis citrella (citrus leaf miner) | Present | | | CABI/EPPO, 2003; EPPO, 2014; IIE, 1995 |
| Eukaryota | Metazoa | Arthropoda | Planococcus citri (citrus mealybug) | Present | | | Williams, 1985; CABI/EPPO, 1999 |
| Eukaryota | Metazoa | Arthropoda | Plutella xylostella (diamondback moth) | Present | | | CIE, 1967 |
| Eukaryota | Metazoa | Arthropoda | Pseudococcus viburni (osbcure mealybug) | Present | | | EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Saissetia oleae (olive scale) | Present | | | Ben-Dov, 1993; CIE, 1973 |
| Eukaryota | Metazoa | Arthropoda | Scirtothrips dorsalis (chilli thrips) | Restricted distribution | | | CABI/EPPO, 2010; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Simosyrphus grandicornis (flower fly) | Widespread | Native | | |
| Eukaryota | Metazoa | Arthropoda | Siphoninus phillyreae (ash whitefly) | Present | | | CABI/EPPO, 2013 |
| Eukaryota | Metazoa | Arthropoda | Solenopsis geminata (tropical fire ant) | Present | Introduced | Yes | Hoffmann et al., 1999; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Spodoptera litura (taro caterpillar) | Present | | | EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Sternochetus mangiferae (mango seed weevil) | Restricted distribution | | | Kalshoven & Laan, 1981; Smith & Brown, 2008; Smith, 1996; EPPO, 2014; CABI/EPPO, 2015 |
| Eukaryota | Metazoa | Arthropoda | Tapinoma melanocephalum (ghost ant) | Present | Introduced | | Andersen & Reichel, 1994 |
| Eukaryota | Metazoa | Arthropoda | Tetranychus urticae (two-spotted spider mite) | Present | | | Young & Zhang, 2001; Brown, 2003 |
| Eukaryota | Metazoa | Arthropoda | Thrips imaginis (plague thrips) | Present | Native | | Mound & Houston, 1987; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Thrips palmi (melon thrips) | Present | | | CABI/EPPO, 1998; CABI & EPPO, 1998; EPPO, 2014 |
| Eukaryota | Metazoa | Arthropoda | Vespula germanica (German wasp) | Absent, formerly present | Introduced | Yes | Australian Broadcasting Corporation, 2005 |
| Eukaryota | Metazoa | Chordata | Bos taurus (cattle) | Present | | | CAB ABSTRACTS Data Mining 2001 |
| Eukaryota | Metazoa | Chordata | Bubalus bubalis (Asian water buffalo) | Widespread | Introduced | Yes | Letts, 1962; Petty et al., 2007; Werner, 2014; Australian Government, 2015; Mulvaney, 2004 |
| Eukaryota | Metazoa | Chordata | Columba livia (pigeons) | Present | Introduced | | ISSG, 2011 |
| Eukaryota | Metazoa | Chordata | Equus asinus (donkeys) | Present | Introduced | Yes | ISSG, 2011 |
| Eukaryota | Metazoa | Chordata | Equus caballus [ISC] (horse) | Widespread | Introduced | Yes | Nimmo & Miller, 2007 |
| Eukaryota | Metazoa | Chordata | Gambusia holbrooki (eastern mosquitofish) | Localised | Introduced | Yes | Lloyd, 1987; Lloyd, 1987 |
| Eukaryota | Metazoa | Chordata | Lutjanus kasmira (blueline snapper) | Widespread | Native | | McGrouther, 2004 |
| Eukaryota | Metazoa | Chordata | Phalloceros caudimaculatus (dusky millions fish) | Absent, formerly present | Introduced | | Unmack, 2001 |
| Eukaryota | Metazoa | Chordata | Poecilia latipinna (sailfin molly) | Present | Introduced | | Corfield et al., 2008 |
| Eukaryota | Metazoa | Chordata | Pterois volitans (lionfish) | Present | Native | | Froese & Pauly, 2010 |
| Eukaryota | Metazoa | Chordata | Rhinella marina (cane toad) | Present | Introduced | Yes | ISSG, 2011 |
| Eukaryota | Metazoa | Chordata | Sus scrofa [ISC] (feral pig) | Present | Introduced | Yes | Twigg et al., 2005 |
| Eukaryota | Metazoa | Chordata | Tyto alba (Barn owl) | Present | Native | | Bruce, 1999 |
| Eukaryota | Metazoa | Chordata | Varanus indicus (ambon lizard) | Present | Introduced | | ISSG, 2011 |
| Eukaryota | Metazoa | Chordata | Vulpes vulpes (red fox) | Present | Introduced | Yes | ISSG, 2011 |
| Eukaryota | Metazoa | Chordata | Xiphophorus hellerii | Present | Introduced | | Corfield et al., 2007 |
| Eukaryota | Metazoa | Chordata | Xiphophorus maculatus (southern platyfish) | Localised | Introduced | | Corfield et al., 2007 |
| Eukaryota | Metazoa | Echinodermata | Acanthaster planci (crown-of-thorns starfish) | Present | | | ISSG, 2011 |
| Eukaryota | Metazoa | Mollusca | Arcuatula senhousia (Asian date mussel) | Localised | Introduced | | Slack-Smith & Brearley, 1987 |
| Eukaryota | Metazoa | Mollusca | Cornu aspersum (common garden snail) | Present | Introduced | Yes | DG Herbert, Natal Museum, South Africa, pers. comm., 2009 |
| Eukaryota | Metazoa | Mollusca | Melanoides tuberculata (red-rimmed melania) | Present | Introduced | | Stoddart, 1983 |
| Eukaryota | Metazoa | Mollusca | Mytilopsis sallei (Caribbean false mussel) | Eradicated | Introduced | Yes | Willan et al., 2000 |
| Eukaryota | Metazoa | Nematoda | Aphelenchoides besseyi (rice leaf nematode) | Present | | | CABI/EPPO, 2000; EPPO, 2014 |
| Eukaryota | Metazoa | Nematoda | Meloidogyne incognita (root-knot nematode) | Widespread | | | CABI/EPPO, 2002; Singh et al., 2012; Khair, 1986 |
| Eukaryota | Metazoa | Nematoda | Meloidogyne javanica (sugarcane eelworm) | Widespread | | | Khair, 1986; CABI/EPPO, 2002 |
| Eukaryota | Metazoa | Nematoda | Radopholus similis (burrowing nematode) | Present | | | CABI/EPPO, 1999; EPPO, 2014 |
| Eukaryota | Metazoa | Nematoda | Tylenchulus semipenetrans (citrus root nematode) | Present | | | CABI/EPPO, 1999; EPPO, 2014 |
| Eukaryota | Metazoa | Platyhelminthes | Platydemus manokwari (New guinea flatworm) | Present | Introduced | | Justine et al., 2014 |
| Eukaryota | Plantae | Chlorophyta | Caulerpa taxifolia (killer algae) | Present | Native | | Phillips & Price, 2002 |
| Eukaryota | Plantae | Pteridophyta | Azolla pinnata (mosquito fern) | Restricted distribution | Native | | Chapman et al., 1981; USDA-ARS, 2005 |
| Eukaryota | Plantae | Pteridophyta | Christella dentata (soft fern) | Localised | Native | | GBIF, 2012 |
| Eukaryota | Plantae | Pteridophyta | Lygodium japonicum (Japanese climbing fern) | Present | Introduced | | Hosking et al., 2011; APNI, 2014 |
| Eukaryota | Plantae | Pteridophyta | Lygodium microphyllum (old world climbing fern) | Present | Native | | USDA-ARS, 2015; Council of Heads of Australasian Herbaria, 2015; PIER, 2015 |
| Eukaryota | Plantae | Rhodophyta | Acanthophora spicifera | Present | Native | | Phillips et al., 1999; Jong et al., 1999; Womersley, 1958 |
| Eukaryota | Plantae | Rhodophyta | Gracilaria salicornia | Present | Native | | Phillips et al., 1999 |
| Eukaryota | Plantae | Spermatophyta | Abutilon indicum (country mallow) | Present | Native | | PROTA, 2015; PIER, 2015 |
| Eukaryota | Plantae | Spermatophyta | Acacia auriculiformis (northern black wattle) | Present | Native | | Boland et al., 1990 |
| Eukaryota | Plantae | Spermatophyta | Acacia crassicarpa (northern wattle) | Present | Introduced | | Australia's Virtual Herbarium, 2014 |
| Eukaryota | Plantae | Spermatophyta | Acacia farnesiana (huisache) | Present | Introduced | Yes | |
| Eukaryota | Plantae | Spermatophyta | Acacia mangium (brown salwood) | Present | | | |
| Eukaryota | Plantae | Spermatophyta | Acacia nilotica (gum arabic tree) | Present | Introduced | Yes | Cronk & Fuller , 1995; Carter, 1998 |
| Eukaryota | Plantae | Spermatophyta | Acanthospermum hispidum (bristly starbur) | Restricted distribution | Introduced | Yes | Miller & Schultz, 1997 |
| Eukaryota | Plantae | Spermatophyta | Adenanthera pavonina (red-bead tree) | Present | Native | | ILDIS, 2002; USDA-ARS, 2012; Cowan, 1998 |
| Eukaryota | Plantae | Spermatophyta | Ageratum conyzoides (billy goat weed) | Present | Introduced | | Auld & Medd, 1992 |
| Eukaryota | Plantae | Spermatophyta | Agropyron cristatum (crested wheatgrass) | Present | Introduced | | GBIF, 2015 |
| Eukaryota | Plantae | Spermatophyta | Agrostis avenacea (Pacific bent grass) | Present | Native | | Victorian Resources Online, 2015 |
| Eukaryota | Plantae | Spermatophyta | Aira caryophyllea (silver hairgrass) | Widespread | Introduced | | Weeds of Australia, 2013; Weeds of Australia, 2013 |
| Eukaryota | Plantae | Spermatophyta | Albizia lebbeck (Indian siris) | Present | Native | | Beadle, 1981 |
| Eukaryota | Plantae | Spermatophyta | Alternanthera philoxeroides (alligator weed) | Eradicated | Introduced | | Gunasekera & Bonila, 2001 |
| Eukaryota | Plantae | Spermatophyta | Alternanthera sessilis (sessile joyweed) | Present | Introduced | | EPPO, 2009 |
| Eukaryota | Plantae | Spermatophyta | Alysicarpus vaginalis (alyce clover) | Present | Introduced | | USDA-ARS, 2014 |
| Eukaryota | Plantae | Spermatophyta | Amaranthus dubius (leafy amaranth) | Present | Introduced | | Palmer, 2009 |
| Eukaryota | Plantae | Spermatophyta | Amaranthus hybridus (smooth pigweed) | Present | | | Lazarides et al., 1997 |
| Eukaryota | Plantae | Spermatophyta | Amaranthus spinosus (spiny amaranth) | Present | Introduced | Yes | Lazarides et al., 1997 |
| Eukaryota | Plantae | Spermatophyta | Ambrosia artemisiifolia (common ragweed) | Present | Introduced | | Crothers, 1993 |
| Eukaryota | Plantae | Spermatophyta | Anagallis arvensis (scarlet pimpernel) | Present | | | Lazarides et al., 1997 |
| Eukaryota | Plantae | Spermatophyta | Annona reticulata (bullock's heart) | Present | Introduced | | Randall, 2012 |
| Eukaryota | Plantae | Spermatophyta | Annona squamosa (sugar apple) | Present | Introduced | | Randall, 2012 |
| Eukaryota | Plantae | Spermatophyta | Antigonon leptopus (coral vine) | Present | Introduced | Yes | Queensland Department of Primary Industries and Fisheries, 2011 |
| Eukaryota | Plantae | Spermatophyta | Arctotheca calendula (capeweed) | Present | | | EPPO, 2014 |
| Eukaryota | Plantae | Spermatophyta | Ardisia elliptica (shoebutton ardisia) | Present | Introduced | Yes | PIER, 2009 |
| Eukaryota | Plantae | Spermatophyta | Argemone mexicana (Mexican poppy) | Present | Introduced | | Parsons & Cuthbertson, 1992 |
| Eukaryota | Plantae | Spermatophyta | Argemone ochroleuca (pale Mexican pricklypoppy) | Present | Introduced | Yes | Wilson, 2001; Council of Heads of Australasian Herbaria, 2015 |
| Eukaryota | Plantae | Spermatophyta | Artocarpus altilis (breadfruit) | Present | Introduced | | Ragone, 2006 |
| Eukaryota | Plantae | Spermatophyta | Arundo donax (giant reed) | Present | Introduced | Yes | Queensland Department of Primary Industries and Fisheries, 2011 |
| Eukaryota | Plantae | Spermatophyta | Asclepias curassavica (bloodflower) | Present | Introduced | Yes | Centre for Australian National Biodiversity Research, 2010 |
| Eukaryota | Plantae | Spermatophyta | Asphodelus tenuifolius (onionweed) | Present | | | Lazarides et al., 1997 |
| Eukaryota | Plantae | Spermatophyta | Atriplex semibaccata (Australian saltbush) | Present, few occurrences | Native | | Council of Heads of Australasian Herbaria, 2015 |
| Eukaryota | Plantae | Spermatophyta | Avena fatua (wild oat) | Present | | | Holm et al., 1977 |
| Eukaryota | Plantae | Spermatophyta | Axonopus fissifolius | Present | Introduced | | Atlas of Living Australia, 2012 |
| Eukaryota | Plantae | Spermatophyta | Azadirachta indica (neem tree) | Present | Introduced | Yes | |
| Eukaryota | Plantae | Spermatophyta | Baccharis halimifolia (groundsel-bush) | Restricted distribution | Introduced | Yes | Westman et al., 1975 |
| Eukaryota | Plantae | Spermatophyta | Bambusa bambos (giant thorny bamboo) | Present | Introduced | | Ohrnberger, 1999 |
| Eukaryota | Plantae | Spermatophyta | Barleria lupulina (hophead Philippine violet) | Present | Introduced | Yes | Weeds of Australia, 2015 |
| Eukaryota | Plantae | Spermatophyta | Barleria prionitis (porcupine flower) | Present | Introduced | Yes | Csurhes & Edwards, 1998 |
| Eukaryota | Plantae | Spermatophyta | Bidens pilosa (blackjack) | Present | | | Benson & McDougall, 1994 |
| Eukaryota | Plantae | Spermatophyta | Boerhavia coccinea (scarlet spiderling) | Present | Introduced | | Meikle & Hewson, 1984; USDA-ARS, 2016 |
| Eukaryota | Plantae | Spermatophyta | Bothriochloa pertusa (pitted beard grass) | Present | Introduced | Yes | Jones, 1997 |
| Eukaryota | Plantae | Spermatophyta | Brassica tournefortii (African mustard) | Present | Introduced | Yes | Weeds of Australia, 2015 |
| Eukaryota | Plantae | Spermatophyta | Briza maxima (large quaking grass) | Localised | Introduced | Yes | University of Queensland, 2013 |
| Eukaryota | Plantae | Spermatophyta | Cabomba caroliniana (Carolina fanwort) | Present | Introduced | | GBIF, 2008; EPPO, 2014 |
| Eukaryota | Plantae | Spermatophyta | Caesalpinia decapetala (Mysore thorn) | Present | Introduced | Yes | Queensland Department of Primary Industries and Fisheries, 2011 |
| Eukaryota | Plantae | Spermatophyta | Calliandra houstoniana var. calothyrsus (calliandra) | Present | Introduced | | Shelton et al., 1996 |
| Eukaryota | Plantae | Spermatophyta | Calopogonium mucunoides (calopo) | Present | Introduced | Yes | Queensland Department of Primary Industries and Fisheries, 2011 |
| Eukaryota | Plantae | Spermatophyta | Calotropis procera (apple of sodom) | Present | Introduced | | PIER, 2002 |
| Eukaryota | Plantae | Spermatophyta | Cardiospermum halicacabum (balloon vine) | Present | Introduced | Yes | Weeds of Australia, 2015 |
| Eukaryota | Plantae | Spermatophyta | Cassytha filiformis (love-vine) | Present | Native | | USDA-ARS, 2014 |
| Eukaryota | Plantae | Spermatophyta | Casuarina cunninghamiana (Australian beefwood) | Present | Native | | |
| Eukaryota | Plantae | Spermatophyta | Casuarina glauca (scaly oak (Australia)) | Present | Introduced | | |
| Eukaryota | Plantae | Spermatophyta | Cenchrus biflorus (Indian sandbur) | Present | Introduced | | Council of Heads of Australasian Herbaria, 2015 |
| Eukaryota | Plantae | Spermatophyta | Cenchrus echinatus (southern sandbur) | Present | | | Groves, 1991; Miller, 1991 |
| Eukaryota | Plantae | Spermatophyta | Centratherum punctatum (lark daisy) | Present | | | Flann, 2009 |
| Eukaryota | Plantae | Spermatophyta | Chenopodium album (fat hen) | Present | | | Lazarides et al., 1997 |
| Eukaryota | Plantae | Spermatophyta | Chenopodium murale (nettleleaf goosefoot) | Present | | | Lazarides et al., 1997 |
| Eukaryota | Plantae | Spermatophyta | Cirsium vulgare (spear thistle) | Present | Introduced | | Holm et al., 1997 |
| Eukaryota | Plantae | Spermatophyta | Cleome rutidosperma (fringed spiderflower) | Present | Introduced | Yes | Waterhouse et al., 2003 |
| Eukaryota | Plantae | Spermatophyta | Clidemia hirta (Koster's curse) | Restricted distribution | Introduced | Yes | Anon, 2003 |
| Eukaryota | Plantae | Spermatophyta | Coccinia grandis (scarlet-fruited ivy gourd) | Present | Native | | USDA-ARS, 2013; PIER, 2013 |
| Eukaryota | Plantae | Spermatophyta | Combretum indicum (Rangoon creeper) | Present | Introduced | Yes | PIER, 2015; Randall, 2012 |
| Eukaryota | Plantae | Spermatophyta | Corymbia citriodora (lemon-scented gum) | Present | | | |
| Eukaryota | Plantae | Spermatophyta | Crotalaria retusa (rattleweed) | Present | Native | | ILDIS, 2013 |
| Eukaryota | Plantae | Spermatophyta | Cryptostegia grandiflora (rubber vine) | Present | Introduced | Yes | Marohasy & Forster, 1991; Australian Weeds Committtee, 2012 |
| Eukaryota | Plantae | Spermatophyta | Cryptostegia madagascariensis (Madagascar rubbervine) | Present | Introduced | Yes | Australian Weeds Committtee, 2012 |
| Eukaryota | Plantae | Spermatophyta | Cupaniopsis anacardioides (carrotwood) | Present | Native | | Reynolds, 1985; Brock, 1988 |
| Eukaryota | Plantae | Spermatophyta | Cuscuta campestris (field dodder) | Present | Introduced | | PIER, 2008 |
| Eukaryota | Plantae | Spermatophyta | Cyanthillium cinereum (little ironweed) | Present | Native | | USDA-ARS, 2013 |
| Eukaryota | Plantae | Spermatophyta | Cylindropuntia fulgida (jumping cholla) | Widespread | Introduced | Yes | Council of Heads of Australasian Herbaria, 2015 |
| Eukaryota | Plantae | Spermatophyta | Cylindropuntia rosea (hudson pear) | Widespread | Introduced | Yes | Council of Heads of Australasian Herbaria, 2015 |
| Eukaryota | Plantae | Spermatophyta | Cynara cardunculus (cardoon) | Present | | | AVH, 2015 |
| Eukaryota | Plantae | Spermatophyta | Cynodon dactylon (Bermuda grass) | Present | Introduced | | Queensland Department of Primary Industries and Fisheries, 2011 |
| Eukaryota | Plantae | Spermatophyta | Cynodon nlemfuensis (African Bermuda-grass) | Present | Introduced | | Clayton et al., 2013 |
| Eukaryota | Plantae | Spermatophyta | Cyperus difformis (small-flowered nutsedge) | Present | Native | | Govaerts, 2014 |
| Eukaryota | Plantae | Spermatophyta | Cyperus rotundus (purple nutsedge) | Present | | | Parsons & Cuthbertson, 1992; USDA-ARS, 2014 |
| Eukaryota | Plantae | Spermatophyta | Dalbergia sissoo | Present | Introduced | Yes | ILDIS, 2007; PIER, 2007 |
| Eukaryota | Plantae | Spermatophyta | Datura ferox (fierce thornapple) | Localised | Introduced | | Parsons & Cuthbertson, 2001 |
| Eukaryota | Plantae | Spermatophyta | Datura innoxia (downy thorn apple) | Present | Introduced | | Council of Heads of Australasian Herbaria, 2014 |
| Eukaryota | Plantae | Spermatophyta | Datura stramonium (jimsonweed) | Present | | | Parsons & Cuthbertson, 1992 |
| Eukaryota | Plantae | Spermatophyta | Delairea odorata (Cape ivy) | Restricted distribution | Introduced | Yes | Fagg, 1989; Blood, 2001 |
| Eukaryota | Plantae | Spermatophyta | Delonix regia (flamboyant) | Present | Introduced | Yes | PIER, 2009 |
| Eukaryota | Plantae | Spermatophyta | Dichanthium annulatum (Kleberg's bluestem) | Present | Introduced | Yes | Perkins, 2014 |
| Eukaryota | Plantae | Spermatophyta | Dichrostachys cinerea (sickle bush) | Present | Introduced | | PIER, 1999 |
| Eukaryota | Plantae | Spermatophyta | Digitaria ciliaris (southern crabgrass) | Present | Introduced | Yes | Jacobs & Wall, 1993 |
| Eukaryota | Plantae | Spermatophyta | Dioscorea alata (white yam) | Present | Introduced | | Govaerts, 2013 |
| Eukaryota | Plantae | Spermatophyta | Dioscorea bulbifera (air potato) | Present | Native | | Govaerts, 2012 |
| Eukaryota | Plantae | Spermatophyta | Echinochloa colona (junglerice) | Widespread | | | Queensland Department of Primary Industries and Fisheries, 2011 |
| Eukaryota | Plantae | Spermatophyta | Echinochloa crus-galli (barnyard grass) | Present | Introduced | Yes | Queensland Department of Primary Industries and Fisheries, 2011 |
| Eukaryota | Plantae | Spermatophyta | Echium plantagineum (Paterson's curse) | Restricted distribution | Introduced | | Parsons & Cuthbertson, 1992 |
| Eukaryota | Plantae | Spermatophyta | Eichhornia crassipes (water hyacinth) | Restricted distribution | Introduced | Yes | Gopal, 1987 |
| Eukaryota | Plantae | Spermatophyta | Eleusine indica (goose grass) | Widespread | Introduced | Yes | Queensland Department of Primary Industries and Fisheries, 2011 |
| Eukaryota | Plantae | Spermatophyta | Emex australis (Doublegee) | Present, few occurrences | Introduced | | Fuller, 1993 |
| Eukaryota | Plantae | Spermatophyta | Epipremnum pinnatum (centipede tongavine) | Present | Native | | Govaerts, 2012 |
| Eukaryota | Plantae | Spermatophyta | Erodium botrys (long-beaked stork's bill) | Present | Introduced | Yes | University of Queensland, 2013 |
| Eukaryota | Plantae | Spermatophyta | Eucalyptus camaldulensis (red gum) | Present | Native | | USDA-ARS, 2015 |
| Eukaryota | Plantae | Spermatophyta | Eucalyptus robusta (swamp mahogany) | Present | | | |
| Eukaryota | Plantae | Spermatophyta | Eugenia uniflora (Surinam cherry) | Localised | Introduced | | Council of Heads of Australasian Herbaria, 2013 |
| Eukaryota | Plantae | Spermatophyta | Euphorbia hirta (garden spurge) | Present | | | Cowie & Werner, 1993 |
| Eukaryota | Plantae | Spermatophyta | Festuca arundinacea (tall fescue) | Localised | Introduced | | Queensland Government, 2016 |
| Eukaryota | Plantae | Spermatophyta | Ficus benjamina (weeping fig) | Present | Native | | PIER, 2014 |
| Eukaryota | Plantae | Spermatophyta | Fimbristylis dichotoma (tall fringe rush) | Present | | | Langkamp et al., 1981 |
| Eukaryota | Plantae | Spermatophyta | Fimbristylis littoralis (lesser fimbristylis) | Present | Native | | Govaerts, 2014 |
| Eukaryota | Plantae | Spermatophyta | Flacourtia indica (governor's plum) | No information available | Native | | Council of Heads of Australasian Herbaria, 2014 |
| Eukaryota | Plantae | Spermatophyta | Galinsoga parviflora (gallant soldier) | Present | Introduced | Yes | Murray, 1992 |
| Eukaryota | Plantae | Spermatophyta | Glyceria maxima (reed sweet-grass) | Absent, formerly present | Introduced | | Brown, 1929 |
| Eukaryota | Plantae | Spermatophyta | Grevillea robusta (silky oak) | Present | Introduced | | |
| Eukaryota | Plantae | Spermatophyta | Heliotropium indicum (Indian heliotrope) | Widespread | | | Lazarides & Hince, 1993; Craven, 1996 |
| Eukaryota | Plantae | Spermatophyta | Heterotis rotundifolia (pink lady) | Present | Introduced | | Hyland et al., 2010 |
| Eukaryota | Plantae | Spermatophyta | Hibiscus tiliaceus (coast cottonwood) | Present | Native | | USDA-ARS, 2016 |
| Eukaryota | Plantae | Spermatophyta | Hibiscus trionum (Venice mallow) | Present | | | Hnatiuk, 1990 |
| Eukaryota | Plantae | Spermatophyta | Hydrilla verticillata (hydrilla) | Widespread | | | Sainty & Jacobs, 1981 |
| Eukaryota | Plantae | Spermatophyta | Hymenachne amplexicaulis (hymenachne) | Widespread | Introduced | Yes | Council of Heads of Australasian Herbaria, 2014 |
| Eukaryota | Plantae | Spermatophyta | Hyparrhenia rufa (Jaragua grass) | Widespread | Introduced | Yes | Smith, 2002 |
| Eukaryota | Plantae | Spermatophyta | Hypochaeris radicata (cat's ear) | Present | Introduced | | Weeds of Australia, 2013 |
| Eukaryota | Plantae | Spermatophyta | Indigofera hirsuta (hairy indigo) | Present | Native | | USDA-ARS, 2013; Gilruth, 1918 |
| Eukaryota | Plantae | Spermatophyta | Indigofera spicata (creeping indigo) | Present | Introduced | | Wilson & Rowe, 2008; Brisbane City Council, 2013 |
| Eukaryota | Plantae | Spermatophyta | Indigofera tinctoria (true indigo) | Present | Native | | ILDIS, 2014 |
| Eukaryota | Plantae | Spermatophyta | Indigofera trita (Asian indigo) | Present | Native | | ILDIS, 2014 |
| Eukaryota | Plantae | Spermatophyta | Ipomoea aquatica (swamp morning-glory) | Restricted distribution | Native | | Stephens & Dowling, 2002; Aston, 1973 |
| Eukaryota | Plantae | Spermatophyta | Ischaemum rugosum (saramollagrass) | Present | Native | | Clayton et al., 2015 |
| Eukaryota | Plantae | Spermatophyta | Jatropha curcas (jatropha) | Present | Introduced | Yes | Crothers, 1998; PIER, 2008; Royal Botanic Gardens Sydney, 2008 |
| Eukaryota | Plantae | Spermatophyta | Jatropha gossypiifolia (bellyache bush) | Widespread | Introduced | Yes | CHIPPENDALE & MURRAY, 1963; Wilson, 1997; Hnatiuk, 1990; Randall, 2002; Parsons & Cuthbertson, 2001; Anon, 1888; Baxter, 2000; Bentham, 1870; Csurhes, 1999; Dunlop, 1987; King & Wirf, 2005; Pitt & Miller, 1991; Short, 1998; Smith, 1995; Wingrave, 2007; Wingrave, 2010; Aldrecht, 1998; Pitt, 1997 |
| Eukaryota | Plantae | Spermatophyta | Lantana camara (lantana) | Restricted distribution | Introduced | Yes | Swarbrick, 1986 |
| Eukaryota | Plantae | Spermatophyta | Leersia hexandra (southern cut grass) | Present | | | Watson & Dallwitz, 1985 |
| Eukaryota | Plantae | Spermatophyta | Leonotis nepetifolia (Christmas candlestick) | Present | Introduced | Yes | PIER, 2015 |
| Eukaryota | Plantae | Spermatophyta | Leucaena leucocephala (leucaena) | Present | Introduced | Yes | ILDIS, 2007; PIER, 2007 |
| Eukaryota | Plantae | Spermatophyta | Lolium perenne (perennial ryegrass) | Present | Introduced | | eMonocot, 2013 |
| Eukaryota | Plantae | Spermatophyta | Ludwigia hyssopifolia (water primrose) | Present | Native | | USDA-ARS, 2012 |
| Eukaryota | Plantae | Spermatophyta | Ludwigia octovalvis (primrose willow) | Present | | | Raven, 1963 |
| Eukaryota | Plantae | Spermatophyta | Ludwigia peploides (water primrose) | Present | | | GBIF, 2009 |
| Eukaryota | Plantae | Spermatophyta | Lycium ferocissimum (African boxthorn) | Restricted distribution | | Yes | Parsons & Cuthbertson, 1992 |
| Eukaryota | Plantae | Spermatophyta | Mangifera indica (mango) | Present | Introduced | | Queensland Department of Primary Industries and Fisheries, 2011 |
| Eukaryota | Plantae | Spermatophyta | Medicago polymorpha (bur clover) | Present | Introduced | Yes | Council of Heads of Australasian Herbaria, 2013 |
| Eukaryota | Plantae | Spermatophyta | Megathyrsus maximus (Guinea grass) | Present | Introduced | Yes | PIER, 2013 |
| Eukaryota | Plantae | Spermatophyta | Melia azedarach (Chinaberry) | Present | Native | | |
| Eukaryota | Plantae | Spermatophyta | Melinis minutiflora (molasses grass) | Present | Introduced | | Queensland Department of Primary Industries and Fisheries, 2011 |
| Eukaryota | Plantae | Spermatophyta | Melinis repens (natal redtop) | Widespread | Introduced | | GBIF, 2012 |
| Eukaryota | Plantae | Spermatophyta | Merremia tuberosa (woodrose) | Present | Introduced | | Atlas of Living Australia, 2014 |
| Eukaryota | Plantae | Spermatophyta | Microlaena stipoides (meadow rice grass, meadow ricegrass) | Widespread | Native | | Council of Heads of Australasian Herbaria (CHAH), 2012 |
| Eukaryota | Plantae | Spermatophyta | Mimosa pigra (catclaw mimosa) | Present | Introduced | Yes | Smith & Miller, 1991; Lonsdale & Miller, 1993 |
| Eukaryota | Plantae | Spermatophyta | Mimosa pudica (sensitive plant) | Restricted distribution | Introduced | | Parsons & Cuthbertson, 1992; PIER, 2008 |
| Eukaryota | Plantae | Spermatophyta | Momordica charantia (bitter gourd) | Present | Introduced | | Hnatiuk, 1990 |
| Eukaryota | Plantae | Spermatophyta | Nicotiana glauca (tree tobacco) | Present | Introduced | Yes | Weeds of Australia, 2013 |
| Eukaryota | Plantae | Spermatophyta | Nypa fruticans (nipa palm) | Present | Native | | |
| Eukaryota | Plantae | Spermatophyta | Opuntia elatior (red-flower prickly pear) | Present | Introduced | | Council of Heads of Australasian Herbaria, 2014 |
| Eukaryota | Plantae | Spermatophyta | Opuntia stricta (erect prickly pear) | Present | Introduced | Yes | Parsons & Cuthbertson, 1992 |
| Eukaryota | Plantae | Spermatophyta | Oryza rufipogon (wild rice) | Present | | | Calder et al., 1999 |
| Eukaryota | Plantae | Spermatophyta | Oxalis corniculata (creeping woodsorrel) | Present | | Yes | Richardson et al., 2006 |
| Eukaryota | Plantae | Spermatophyta | Oxalis pes-caprae (Bermuda buttercup) | Present | | | Parsons & Cuthbertson, 1992 |
| Eukaryota | Plantae | Spermatophyta | Parkinsonia aculeata (Mexican palo-verde) | Present | Introduced | Yes | Wilson & Miller, 1987; Woods, 1992; Miller & Pickering, 1980 |
| Eukaryota | Plantae | Spermatophyta | Parthenium hysterophorus (parthenium weed) | Present | Introduced | Yes | Auld & Medd, 1987; Navie et al., 1996; EPPO, 2014 |
| Eukaryota | Plantae | Spermatophyta | Paspalum distichum (knotgrass) | Present | Introduced | | PlantNet, 2009 |
| Eukaryota | Plantae | Spermatophyta | Paspalum scrobiculatum (ricegrass paspalum) | Present | Native | | USDA-ARS, 2003 |
| Eukaryota | Plantae | Spermatophyta | Paspalum urvillei (Vasey grass) | Present | Introduced | | Queensland Government, 2012 |
| Eukaryota | Plantae | Spermatophyta | Paspalum vaginatum (seashore paspalum) | Present | Native | | USDA-ARS, 2016 |
| Eukaryota | Plantae | Spermatophyta | Passiflora foetida (red fruit passion flower) | Widespread | | | Satterthwait, 1982; Hnatiuk, 1990; Holm et al., 1997 |
| Eukaryota | Plantae | Spermatophyta | Passiflora suberosa (corkystem passionflower) | Present | Introduced | Yes | Thorp & Wilson, 2011 |
| Eukaryota | Plantae | Spermatophyta | Peltophorum pterocarpum (copperpod) | Present | | | |
| Eukaryota | Plantae | Spermatophyta | Pennisetum clandestinum (kikuyu grass) | Localised | Introduced | Yes | Lamp & Collett, 1976 |
| Eukaryota | Plantae | Spermatophyta | Pennisetum pedicellatum (deenanath grass) | Present | Introduced | Yes | Doughton, 1974 |
| Eukaryota | Plantae | Spermatophyta | Pennisetum polystachion (mission grass) | Present | Introduced | Yes | Bayliss et al., 2006 |
| Eukaryota | Plantae | Spermatophyta | Pennisetum purpureum (elephant grass) | Present | Introduced | Yes | Queensland Department of Primary Industries and Fisheries, 2011 |
| Eukaryota | Plantae | Spermatophyta | Pennisetum setaceum (fountain grass) | Present | Introduced | | Groves et al., 2005 |
| Eukaryota | Plantae | Spermatophyta | Phalaris paradoxa (awned canary-grass) | Widespread | | | Adkins et al., 1997 |
| Eukaryota | Plantae | Spermatophyta | Phragmites australis (common reed) | Present | | | Sainty & Jacobs, 1988 |
| Eukaryota | Plantae | Spermatophyta | Pinus caribaea (Caribbean pine) | Present | Introduced | Yes | FAO, 2001 |
| Eukaryota | Plantae | Spermatophyta | Pinus oocarpa (ocote pine) | Present | | | |
| Eukaryota | Plantae | Spermatophyta | Pistia stratiotes (water lettuce) | Present | | | EPPO, 2014 |
| Eukaryota | Plantae | Spermatophyta | Plantago coronopus (Buck's-horn plantain) | Present | Introduced | | Council of Heads of Australasian Herbaria, 2012 |
| Eukaryota | Plantae | Spermatophyta | Plectranthus scutellarioides (coleus) | Present | Native | | Govaerts, 2014; CANBR, 2014 |
| Eukaryota | Plantae | Spermatophyta | Pluchea indica (Indian camphorweed) | Present | Native | | USDA-ARS, 2012 |
| Eukaryota | Plantae | Spermatophyta | Poa annua (annual meadowgrass) | Present | Introduced | Yes | Queensland Department of Primary Industries and Fisheries, 2011 |
| Eukaryota | Plantae | Spermatophyta | Poa pratensis (smooth meadow-grass) | Localised | Introduced | | Council of Heads of Australasian Herbaria, 2016 |
| Eukaryota | Plantae | Spermatophyta | Polycarpon tetraphyllum (fourleaf allseed) | Widespread | Introduced | Yes | Weeds of Australia, 2013 |
| Eukaryota | Plantae | Spermatophyta | Polygonum aviculare (prostrate knotweed) | Present | | | Holm et al., 1979 |
| Eukaryota | Plantae | Spermatophyta | Polypogon monspeliensis (annual beard grass) | Present, few occurrences | Introduced | | Queensland Government, 2012 |
| Eukaryota | Plantae | Spermatophyta | Portulaca oleracea (purslane) | Present | Introduced | | Jessop, 1981 |
| Eukaryota | Plantae | Spermatophyta | Potamogeton crispus (curlyleaf pondweed) | Present | | | PIER, 2007 |
| Eukaryota | Plantae | Spermatophyta | Prosopis glandulosa (honey mesquite) | Present | Introduced | Yes | Panetta & Carstairs, 1989 |
| Eukaryota | Plantae | Spermatophyta | Prosopis pallida (mesquite) | Present | Introduced | Yes | Panetta & Carstairs, 1989 |
| Eukaryota | Plantae | Spermatophyta | Prosopis velutina (velvet mesquite) | Present | Introduced | Yes | Panetta & Carstairs, 1989 |
| Eukaryota | Plantae | Spermatophyta | Psidium cattleianum (strawberry guava) | Present | Introduced | | PIER, 2007 |
| Eukaryota | Plantae | Spermatophyta | Psidium guajava (guava) | Present | Introduced | Yes | Weeds of Australia, 2012 |
| Eukaryota | Plantae | Spermatophyta | Ptychosperma macarthurii (Macarthur palm) | Present | Native | | Govaerts et al., 2014 |
| Eukaryota | Plantae | Spermatophyta | Pueraria montana var. lobata (kudzu) | Present | Introduced | | Royal Botanic Gardens Sydney, 2007 |
| Eukaryota | Plantae | Spermatophyta | Rhamphicarpa fistulosa | Present | | | Hansen, 1975 |
| Eukaryota | Plantae | Spermatophyta | Ricinus communis (castor bean) | Present | Introduced | Yes | NWSEC, 1998 |
| Eukaryota | Plantae | Spermatophyta | Rottboellia cochinchinensis (itch grass) | Present | Native | | USDA-ARS, 2008 |
| Eukaryota | Plantae | Spermatophyta | Rubus fruticosus (blackberry) | Present | Introduced | | Parsons & Cuthbertson, 1992 |
| Eukaryota | Plantae | Spermatophyta | Rumex acetosella (sheep's sorrel) | Present | Introduced | Yes | Holm et al., 1997; PIER, 2013 |
| Eukaryota | Plantae | Spermatophyta | Sacciolepis indica (glen woodgrass) | Present | Native | | Australian National Herbarium, 2012 |
| Eukaryota | Plantae | Spermatophyta | Samanea saman (rain tree) | Present | Introduced | | |
| Eukaryota | Plantae | Spermatophyta | Scaevola taccada (beach naupaka) | Present | Native | | USDA-ARS, 2012 |
| Eukaryota | Plantae | Spermatophyta | Schefflera actinophylla (umbrella tree) | Present | Native | | USDA-ARS, 2012 |
| Eukaryota | Plantae | Spermatophyta | Schinus terebinthifolius (Brazilian pepper tree) | Present | Introduced | | Royal Botanic Gardens Sydney, 2007 |
| Eukaryota | Plantae | Spermatophyta | Senna obtusifolia (sicklepod) | Widespread | Introduced | Yes | Parsons & Cuthbertson, 1992; Mackey et al., 1997 |
| Eukaryota | Plantae | Spermatophyta | Senna occidentalis (coffee senna) | Present | | Yes | Parsons & Cuthbertson, 1992; Flanagan, 1998 |
| Eukaryota | Plantae | Spermatophyta | Senna siamea (yellow cassia) | Present, few occurrences | Introduced | Yes | Royal Botanic Gardens Sydney, 2007 |
| Eukaryota | Plantae | Spermatophyta | Senna spectabilis (whitebark senna) | Present | | | Council of Heads of Australasian Herbaria, 2013 |
| Eukaryota | Plantae | Spermatophyta | Senna surattensis (golden senna) | Present | Native | | USDA-ARS, 2014 |
| Eukaryota | Plantae | Spermatophyta | Sesbania sesban (sesban) | Present | Native | | USDA-ARS, 2014 |
| Eukaryota | Plantae | Spermatophyta | Setaria parviflora (knotroot foxtail) | Localised | Introduced | | Council of Heads of Australasian Herbaria, 2013 |
| Eukaryota | Plantae | Spermatophyta | Setaria viridis (green foxtail) | Present | | | Auld & Medd, 1987 |
| Eukaryota | Plantae | Spermatophyta | Sida acuta (sida) | Widespread | Introduced | Yes | Weeds of Australia, 2011 |
| Eukaryota | Plantae | Spermatophyta | Sisymbrium irio | Widespread | Introduced | | Weeds of Australia, 2013 |
| Eukaryota | Plantae | Spermatophyta | Solanum elaeagnifolium (silverleaf nightshade) | Present | Introduced | Yes | Lazarides et al., 1997; EPPO, 2014 |
| Eukaryota | Plantae | Spermatophyta | Solanum erianthum (potato tree) | Present | Introduced | Yes | Randall, 2012 |
| Eukaryota | Plantae | Spermatophyta | Solanum nigrum (black nightshade) | Present | | | Hnatiuk, 1990 |
| Eukaryota | Plantae | Spermatophyta | Solanum torvum (turkey berry) | Present | | | Hnatiuk, 1990 |
| Eukaryota | Plantae | Spermatophyta | Sonchus oleraceus (common sowthistle) | Present | Introduced | | Queensland Department of Primary Industries and Fisheries, 2011 |
| Eukaryota | Plantae | Spermatophyta | Spathodea campanulata (African tulip tree) | Present | Introduced | Yes | PIER, 2008 |
| Eukaryota | Plantae | Spermatophyta | Spermacoce verticillata (shrubby false buttonwood) | Present | Introduced | | Council of Heads of Australasian Herbaria, 2016 |
| Eukaryota | Plantae | Spermatophyta | Sporobolus africanus (rat’s tail grass) | Present | Introduced | | Mallett, 2005 |
| Eukaryota | Plantae | Spermatophyta | Stachytarpheta cayennensis (blue snakeweed) | Present | Introduced | Yes | USDA-ARS, 2015; PIER, 2015 |
| Eukaryota | Plantae | Spermatophyta | Stachytarpheta jamaicensis (Jamaica vervain) | Present | | | Smith, 1991; Hnatiuk, 1990 |
| Eukaryota | Plantae | Spermatophyta | Stellaria media (common chickweed) | Present | | | Lazarides et al., 1997 |
| Eukaryota | Plantae | Spermatophyta | Synedrella nodiflora (synedrella) | Present | | | Hnatiuk, 1990; Holm et al., 1997 |
| Eukaryota | Plantae | Spermatophyta | Tagetes minuta (stinking Roger) | Present | | | Hnatiuk, 1990 |
| Eukaryota | Plantae | Spermatophyta | Tamarix aphylla (athel) | Restricted distribution | Introduced | Yes | Griffin et al., 1989; Agriculture & Resource Management Council, 2000 |
| Eukaryota | Plantae | Spermatophyta | Tamarix ramosissima (saltcedar) | Present | Introduced | | Royal Botanic Gardens Sydney, 2007 |
| Eukaryota | Plantae | Spermatophyta | Taraxacum officinale complex (dandelion) | Widespread | Introduced | | Royal Botanic Gardens Melbourne, 2003 |
| Eukaryota | Plantae | Spermatophyta | Terminalia catappa (Singapore almond) | Present | | | |
| Eukaryota | Plantae | Spermatophyta | Tetragonia tetragonioides (New Zealand spinach) | Present | Native | | Morris, 2009 |
| Eukaryota | Plantae | Spermatophyta | Themeda arguens (Christmas grass) | Present | Native | | Clayton et al., 2014 |
| Eukaryota | Plantae | Spermatophyta | Thespesia populnea (portia tree) | Present | | | USDA-ARS, 2015 |
| Eukaryota | Plantae | Spermatophyta | Thunbergia grandiflora (Bengal trumpet) | Present | Introduced | Yes | Queensland Department of Primary Industries and Fisheries, 2007 |
| Eukaryota | Plantae | Spermatophyta | Tribulus cistoides (false puncture vine) | Widespread | | Yes | Parsons & Cuthbertson, 1992; Newbould, 1998; Royal Botanic Gardens Sydney, 2003 |
| Eukaryota | Plantae | Spermatophyta | Tribulus terrestris (puncture vine) | Present | | | Parsons & Cuthbertson, 1992 |
| Eukaryota | Plantae | Spermatophyta | Turnera ulmifolia (West Indian holly) | Present | Introduced | Yes | Queensland Department of Primary Industries and Fisheries, 2011 |
| Eukaryota | Plantae | Spermatophyta | Typha domingensis (southern cattail) | Widespread | Native | | Parsons & Cuthbertson, 1992 |
| Eukaryota | Plantae | Spermatophyta | Ulex europaeus (gorse) | Present | Introduced | Yes | PIER, 2007 |
| Eukaryota | Plantae | Spermatophyta | Urena lobata (caesar weed) | Present | Native | | USDA-ARS, 2012; Randall, 2012; Queensland Department of Primary Industries and Fisheries, 2011 |
| Eukaryota | Plantae | Spermatophyta | Urochloa decumbens (signal grass) | Present | Introduced | | Weeds of Australia, 2015 |
| Eukaryota | Plantae | Spermatophyta | Urochloa distachya (signal grass) | Present | Introduced | | Simon & Alfonso, 2011; CSIRO, 2010 |
| Eukaryota | Plantae | Spermatophyta | Urochloa mutica (para grass) | Present | Introduced | Yes | Smith, 2002 |
| Eukaryota | Plantae | Spermatophyta | Urtica urens (annual nettle) | Restricted distribution | | | Jessop, 1981 |
| Eukaryota | Plantae | Spermatophyta | Verbesina encelioides (golden crownbeard) | Present | Introduced | | Council of Heads of Australasian Herbaria (CHAH), 2012; EPPO, 2014 |
| Eukaryota | Plantae | Spermatophyta | Vigna marina (beach bean) | Widespread | Native | | Council of Heads of Australasian Herbaria, 2013 |
| Eukaryota | Plantae | Spermatophyta | Vitex rotundifolia (beach vitex) | Present | Native | | Munir, 1987 |
| Eukaryota | Plantae | Spermatophyta | Vulpia bromoides (squirreltail fescue) | Localised | Introduced | | Simon & Alfonso, 2012 |
| Eukaryota | Plantae | Spermatophyta | Vulpia myuros (annual fescue) | Present | Introduced | | Australian Plant Census, 2013 |
| Eukaryota | Plantae | Spermatophyta | Xanthium spinosum (bathurst burr) | Present | Introduced | Yes | Royal Botanic Gardens Sydney, 2013; PIER, 2013 |
| Eukaryota | Plantae | Spermatophyta | Xanthium strumarium (common cocklebur) | Present | | | Lazarides et al., 1997 |
| Eukaryota | Plantae | Spermatophyta | Xyris complanata (yellow-eyed grass) | Present | Native | | Bentham & Mueller, 1878 |
| Eukaryota | Plantae | Spermatophyta | Ziziphus mauritiana (jujube) | Present | Introduced | Yes | PIER, 2007 |
| Eukaryota | Plantae | Streptophyta | Campylopus introflexus | Absent, invalid record | | | Streimann & Klazenga, 2002; Scott & Stone, 1976 |
| Eukaryota | Protista | Protozoa | Babesia bovis | Present | | | CAB ABSTRACTS Data Mining 2001 |
| Eukaryota | Protista | Protozoa | Toxoplasma gondii | Present | | | CAB ABSTRACTS Data Mining 2001 |
| Virus | | | Potato spindle tuber viroid (spindle tuber of potato) | Eradicated | | | Behjatnia et al., 1996; EPPO, 2014; CABI/EPPO, 2014 |
| Virus | | | Sweet potato feathery mottle virus (internal cork disease of sweet potato) | Present | | | CABI/EPPO, 2003; EPPO, 2014 |
| Virus | | | Tomato yellow leaf curl virus (leaf curl) | Present | | | Brunschot et al., 2010; EPPO, 2014 |