''Stylidium rotundifolium'' is a

dicotyledon The dicotyledons, also known as dicots (or, more rarely, dicotyls), are one of the two groups into which all the flowering plants (angiosperms) were formerly divided. The name refers to one of the typical characteristics of the group: namely, t ...

ous plant that belongs to the genus ''

Stylidium ''Stylidium'' (also known as triggerplants or trigger plants) is a genus of dicotyledonous plants that belong to the family Stylidiaceae. The genus name ''Stylidium'' is derived from the Greek ''στύλος'' or ''stylos'' (column or pillar), wh ...

'' (family Stylidiaceae). It is an erect

annual plant An annual plant is a plant that completes its life cycle, from germination to the production of seeds, within one growing season, and then dies. The length of growing seasons and period in which they take place vary according to geographical ...

that grows from 4 to 18 cm tall. Obovate or oblanceolate leaves, about 4-17 per plant, form a basal rosette around the compressed stem. The leaves are generally 5–29 mm long and 3–10 mm wide. This species generally has one to ten

scapes Parsons School of Design, known colloquially as Parsons, is a private art and design college located in the Greenwich Village neighborhood of New York City. Founded in 1896 after a group of progressive artists broke away from established Manhatta ...

and cymose inflorescences that are 4–18 cm long. Flowers are pink or white. ''S. rotundifoliums wide, sporadic distribution ranges from the

Kimberley Kimberly or Kimberley may refer to: Places and historical events Australia * Kimberley (Western Australia) ** Roman Catholic Diocese of Kimberley * Kimberley Warm Springs, Tasmania * Kimberley, Tasmania a small town * County of Kimberley, a ...

region in Western Australia east to northeastern Queensland with a significant population near Taroom, Queensland. Its typical habitats include damp sandy soils on creekbanks, receding waterholes, or ''

Melaleuca ''Melaleuca'' () is a genus of nearly 300 species of plants in the myrtle family, Myrtaceae, commonly known as paperbarks, honey-myrtles or tea-trees (although the last name is also applied to species of '' Leptospermum''). They range in size ...

'' woodlands. It flowers in the southern hemisphere from April to October. ''S. rotundifolium'' is most closely related to '' S. dunlopianum''.Bean, A.R. (2000). A revision of ''Stylidium'' subg. ''Andersonia'' (R.Br. ex G.Don) Mildbr. (Stylidiaceae). ''Austrobaileya'' 5(4): 589-649. The synonym ''S. irriguum'' was described in 1918 and reduced to synonymy by A.R. Bean in 2000. Bean noted that the description of ''S. irriguum'' matched that of ''S. rotundifolium'' except for the flower color (pink with red highlights for ''S. rotundifolium'' and pale yellow to white for ''S. irriguum'') and capsule size, which both fall within the natural variation for this species. ''S. reductum'' was also reduced to synonymy by Bean because the taxon described as ''S. reductum'' was just a juvenile form of ''S. rotundifolium'' that only had a single flower. Its conservation status has been assessed as secure.

References

Carnivorous plants of Australia Flora of Queensland Flora of the Northern Territory Eudicots of Western Australia rotundifolium Plants described in 1810 Asterales of Australia {{Australia-asterid-stub

See also

References