Stylidium rotundifolium

Taxobox


image_caption = "S. rotundifolium" drawing from the 1770 Endeavour voyage of James Cook.
status = secure
status_ref = Bean, A.R. (2000). A revision of "Stylidium" subg. "Andersonia" (R.Br. ex G.Don) Mildbr. (Stylidiaceae). "Austrobaileya" 5(4): 589-649.]
regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Asterales
familia = Stylidiaceae
genus = "Stylidium"
subgenus = "Andersonia"
sectio = "Biloba"
species = "S. rotundifolium"
binomial = "Stylidium rotundifolium"
binomial_authority = R.Br. 1810
synonyms ="Candollea rotundifolia":(R.Br.) F.Muell. 1883"Stylidium irriguum":W.Fitzg. 1918"Stylidium reductum":Carlquist 1978

"Stylidium rotundifolium" is a dicotyledonous plant that belongs to the genus "Stylidium" (family Stylidiaceae). It is an erect annual plant 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 and cymose inflorescences that are 4-18 cm long. Flowers are pink or white. "S. rotundifolium"'s wide, sporadic distribution ranges from the Kimberley 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" woodlands. It flowers in the southern hemisphere from April to October. "S. rotundifolium" is most closely related to "S. dunlopianum".

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.

See also

* List of "Stylidium" species

References