Lysiosepalum Explained

Lysiosepalum is a genus of 5 species of flowering plants in the genus of plants in the family Malvaceae, all endemic to the south-west of Western Australia.

Description

All species of Lysiosepalum are shrubs up to high. The leaves are mostly linear to egg-shaped with 2 leaf-like stipules at the base of the petiole. There are petal-like sepals alternating between broad to narrow, and tiny, scale-like petals. Three egg-shaped or lance-shaped bracteoles are below the sepals, bracts at the base of the pedicels, the stamens are joined at the base and there are tiny staminodes.[1] [2]

Taxonomy

The genus Lysiosepalum was first formally described in 1858 by Ferdinand von Mueller in his Fragmenta Phytographiae Australiae, and the first species he described (the type species) was Lysiosepalum barryanum.[3] [4] The genus name means a "setting-free sepal", referring to the sepals, which are almost free or separated.[5]

Species list

The following is a list of names of Lysiosepalum species accepted by the Australian Plant Census as at April 2022:[6]

Distribution and habitat

Species of Lysiosepalum occur in open woodland or shrubland between Yuna and Ravensthorpe in the south-west of Western Australia.

Notes and References

  1. Book: Blake . Trevor L. . Lantern Bushes of Australia; Thomasias & Allied Genera . 2021 . A.P.S. Keiler Plains Inc. . Australia . 9780646839301 . 376.
  2. Wilkins . Carolyn F. . A taxonomic revision of the Western Australian genus Lysiosepalum (Malvaceae: Lasiopetaleae). . Nuytsia . 2001 . 13 . 3 . 579–580 . 16 November 2023.
  3. Web site: Lysiosepalum. APNI. 30 December 2020.
  4. Book: von Mueller . Ferdinand . Fragmenta Phytographiae Australiae . 1859 . 1 . Victorian Government Printer . Melbourne . 142–143 . 16 November 2023.
  5. Book: Sharr . Francis Aubi . George . Alex . Western Australian Plant Names and Their Meanings . 2019 . Four Gables Press . Kardinya, WA . 9780958034180 . 331 . 3rd.
  6. Web site: Lysiosepalum . Australian Plant Census . 30 April 2022.