Stylidium subg. Andersonia

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Andersonia
Stylidium rotundifolium
Scientific classification
Kingdom: Plantae Division: Magnoliophyta Class: Magnoliopsida Order: Asterales Family: Stylidiaceae Subfamily: Stylidioideae Genus: Stylidium Subgenus: Andersonia (R.Br. 1810) Mildbr. 1908
Type species
Stylidium tenellum R.Br.
Sections
Alsinoida Andersonia Biloba Tenella Uniflora

Andersonia is a subgenus of Stylidium that is characterized by a linear hypanthium, recurved mature capsule walls, an erect and persistent septum, and many seeds. This subgenus occurs in areas of tropical northern Australia and into Southeast Asia.^[1]

[edit] Taxonomy

In his 1908 monograph, Johannes Mildbraed had treated subgenus Andersonia as a rank without sections. He also had established the subgenus Alsinoides for species related to S. alsinoides, which are morphologically similar to species of subgenus Andersonia. In 2000, A.R. Bean published a taxonomic revision of subgenus Andersonia and reduced subgenus Alsinoides to sectional rank, renamed Alsinoida. Bean also established three other new sections based on cladistic analysis: Biloba, Uniflora, and Tenella, which is really just George Bentham's series Tenellae, though heavily revised. By adding sectional ranks to subgenus Andersonia, Bean also established the autonym section Andersonia.^[2]

[edit] See also

• List of Stylidium species

[edit] References