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.

Lysiosepalum
Lysiosepalum involucratum
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malvales
Family: Malvaceae
Subfamily: Byttnerioideae
Tribe: Lasiopetaleae
Genus: Lysiosepalum
F.Muell.[1]
Species

See text

Description

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All species of Lysiosepalum are shrubs up to 1.5 m (4 ft 11 in) 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.[2][3][4]

Taxonomy

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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.[5][6] The genus name means a "setting-free sepal", referring to the sepals, which are almost free or separated.[2][7]

Species list

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The following is a list of names of Lysiosepalum species accepted by the Australian Plant Census as at April 2022:[8]

Distribution and habitat

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Species of Lysiosepalum occur in open woodland or shrubland between Yuna and Ravensthorpe in the south-west of Western Australia.[3][4]

References

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