Acevedo-Rodríguez P; Strong MT, 2012. Catalogue of the Seed Plants of the West Indies. Smithsonian Contributions to Botany, 98:1192 pp. Washington DC, USA: Smithsonian Institution. http://botany.si.edu/Antilles/WestIndies/catalog.htm
Britton NL; Wilson P, 1924. Scientific Survey of Porto Rico and the Virgin islands, Volume V, Botany of Porto Rico and the Virgin Islands. New York Academy of Sciences, New York.
CRC for Australian Weed Management, 2003. Garden geranium (Pelargonium alchemilloides) weed management guide. http://www.environment.gov.au/biodiversity/invasive/weeds/publications/guidelines/alert/p-alchemilloides.html
Dasuki UA, 2002. Pelargonium Rosat Group. In: Oyen LPA, Lemmens RHMJ, Eds. PROTA (Plant Resources of Tropical Africa). Wageningen, the Netherlands: PROTA. http://database.prota.org/PROTAhtml/Pelargonium%20Rosat%20Group_En
Hanelt P; Buttner R; Mansfeld R, 2001. Mansfeld's Encyclopedia of Agricultural and Horticultural Crops (except Ornamentals). Berlin, Germany: Springer.
IPCN Chromosome Reports, 2014. Index to Plant Chromosome Numbers (IPCN), Tropicos website. St. Louis, Missouri, USA: Missouri Botanical Garden. http://tropicos.org/Project/IPCN
Liogier HA; Martorell LF, 2000. Flora of Puerto Rico and adjacent islands: a systematic synopsis, 2nd edition revised. San Juan, Puerto Rico: La Editorial, University of Puerto Rico, 382 pp.
Lis-Balchin M, 2002. Geranium and Pelargonium: the genera Geranium and Pelargonium. London, UK: Taylor & Francis, xi + 318 pp.
PFAF, 2014. Plants for a future. http://www.pfaf.org
Randall RP, 2012. A Global Compendium of Weeds. Perth, Australia: Department of Agriculture and Food Western Australia, 1124 pp. http://www.cabi.org/isc/FullTextPDF/2013/20133109119.pdf
SANBI, 2014. South African National Biodiversity Institute plant information website., South Africa: Kirstenbosch National Botanical Garden, South African National Biodiversity Institute. http://pza.sanbi.org/
Seidemann J, 2005. World spice plants: Economic usage, botany, taxonomony. Heidelberg, Germany: Springer, 286-287.
Stearn WT, 1992. Stearns dictionary of plant names for gardeners: A handbok on the origin and meaning of the botanical names of some cultivated plants. London, UK: Cassell.
USDA-ARS, 2014. Germplasm Resources Information Network (GRIN). Online Database. Beltsville, Maryland, USA: National Germplasm Resources Laboratory. https://npgsweb.ars-grin.gov/gringlobal/taxon/taxonomysearch.aspx
Vascular Plants of Antioquia, 2014. Catalogue of the Vascular Plants of the Department of Antioquia (Colombia), Tropicos website. St. Louis, Missouri and Cambridge, Massachusetts, USA: Missouri Botanical Garden and Harvard University Herbaria. http://tropicos.org/Project/CV
Vascular Plants of Ecuador, 2014. Catalogue of the Vascular Plants of Ecuador, Tropicos website. St. Louis, Missouri and Cambridge, Massachusetts, USA: Missouri Botanical Garden and Harvard University Herbaria. http://tropicos.org/Project/CE
Distribution References
Acevedo-Rodríguez P, Strong M T, 2012. Catalogue of the Seed Plants of the West Indies. Washington, DC, USA: Smithsonian Institution. 1192 pp. http://botany.si.edu/Antilles/WestIndies/catalog.htm
CABI, Undated. CABI Compendium: Status as determined by CABI editor. Wallingford, UK: CABI
Hanelt P, Buttner R, Mansfeld R, 2001. Mansfeld's Encyclopedia of Agricultural and Horticultural Crops (except Ornamentals). Berlin, Germany: Springer. 539 pp.
Liogier HA, Martorell LF, 2000. Flora of Puerto Rico and adjacent islands: a systematic synopsis, 2nd edition revised., San Juan, Puerto Rico: La Editorial, University of Puerto Rico. 382 pp.
SANBI, 2014. South African National Biodiversity Institute plant information website., South Africa: Kirstenbosch National Botanical Garden, South African National Biodiversity Institute. http://pza.sanbi.org/
Seebens H, Blackburn T M, Dyer E E, Genovesi P, Hulme P E, Jeschke J M, Pagad S, Pyšek P, Winter M, Arianoutsou M, Bacher S, Blasius B, Brundu G, Capinha C, Celesti-Grapow L, Dawson W, Dullinger S, Fuentes N, Jäger H, Kartesz J, Kenis M, Kreft H, Kühn I, Lenzner B, Liebhold A, Mosena A (et al), 2017. No saturation in the accumulation of alien species worldwide. Nature Communications. 8 (2), 14435. http://www.nature.com/articles/ncomms14435
Seidemann J, 2005. World spice plants: Economic usage, botany, taxonomony., Heidelberg, Germany: Springer. 286-287.
USDA-ARS, 2014. Germplasm Resources Information Network (GRIN). Online Database. Beltsville, Maryland, USA: National Germplasm Resources Laboratory. https://npgsweb.ars-grin.gov/gringlobal/taxon/taxonomysimple.aspx
Vascular Plants of Antioquia, 2014. Catalogue of the Vascular Plants of the Department of Antioquia (Colombia), Tropicos website., St. Louis, Missouri and Cambridge, Massachusetts, USA: Missouri Botanical Garden and Harvard University Herbaria. http://tropicos.org/Project/CV
Vascular Plants of Ecuador, 2014. Catalogue of the Vascular Plants of Ecuador, Tropicos website., St. Louis, Missouri and Cambridge, Massachusetts, USA: Missouri Botanical Garden and Harvard University Herbaria. http://tropicos.org/Project/CE