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C. canadensis is the largest species in the genus Cervus.  Adult males in Fiordland, New Zealand, in the 1960s (before substantial hybridization with...


The following description is from PROTA (2016):Annual, ascending from a creeping base; culms 4–30 cm. high. Leaf-blades 1–5 cm. long, 1–4 mm. wide....

Cover for Ageratum conyzoides (billy goat weed)

A. conyzoides is an erect, branching, annual herb with shallow, fibrous roots. It may, depending upon environmental conditions, reach 50-1500 mm tall...

Cover for Prosopis juliflora (mesquite)

The following description is taken from Burkart (1976) as the over-arching species morphology including all varieties from all parts of the world....

Cover for Paysandisia archon (South American palm borer)

P. archon is an attractive Neotropical castniid moth. The eggs are fusiform, resembling a rice grain, light cream or creamy pink when freshly laid,...

Cover for Prosopis pallida (mesquite)

The following description is taken from Burkart (1976) as this description is still accepted in the absence of a new acknowledged taxonomy. Tree...

Cover for Ambrosia artemisiifolia (common ragweed)

Annual herb (therophyte), (10-)20-60(-150) cm tall. Stems erect. Leaves opposite (proximal) and alternate, with blades lanceolate or elliptic...

Cover for Striga asiatica (witch weed)

S. asiatica is not a conspicuous weed; it had spread to infest almost 200,000 hectares before being noticed in the USA. There is nothing about the...

Cover for Cervus elaphus (red deer)

C. elaphus across its native range is a highly variable species – hence the taxonomies dividing it into many sub-species.  Among the western...


U. decumbens is a perennial grass. Stolons present. Culms decumbent; 50–150 cm long; wiry. Ligule a fringe of hairs. Leaf-blades linear, or...

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