Helena velvet bush
Lasiopetalum bracteatum near Perth

Priority Four — Rare Taxa (DEC)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malvales
Family: Malvaceae
Genus: Lasiopetalum
Species:
L. bracteatum
Binomial name
Lasiopetalum bracteatum

Lasiopetalum bracteatum, commonly known as Helena velvet bush,[2] is a species of flowering plant in the family Malvaceae and is endemic to the south-west Western Australia. It is an erect, spreading shrub with egg-shaped leaves and loose groups pinkish flowers.

Description

Lasiopetalum bracteatum is an erect, spreading shrub typically 60–150 cm (24–59 in) high and 40–100 cm (16–39 in) wide, its young stems covered with star-shaped hairs. The leaves are egg-shaped, the edges curved downwards, mostly 19–45 mm (0.75–1.77 in) long and 11–30 mm (0.43–1.18 in) wide on a petiole 6–13 mm (0.24–0.51 in) long. The surfaces of the leaves are sparsely to densely covered with star-shaped hairs. The flowers are arranged in loose groups of 8 to 22 46–80 mm (1.8–3.1 in) long, the peduncle hairy and 10–37 mm (0.39–1.46 in) long, each flower on a pedicel 4.1–7.0 mm (0.16–0.28 in) long with an elliptic bract 2.3–7.2 mm (0.091–0.283 in) long at the base. The sepals are bright pink to mauve-pink with a dark red base, 4.8–8.3 mm (0.19–0.33 in) long with lobes 3.7–7.1 mm (0.15–0.28 in) long and the five petals are about 1 mm (0.039 in) long and glabrous. Flowering occurs from August to November and the fruit is an elliptic capsule 4.1–4.5 mm (0.16–0.18 in) long.[2][3]

Taxonomy

This species was first formally described in 1839 by Stephan Endlicher who gave it the name Corethrostylis bracteata in Novarum Stirpium Decades.[4][5] In 1863, George Bentham changed the name to Lasiopetalum bracteatum in Flora Australiensis.[6] The specific epithet (bracteatum) means "bracteate".[7]

Distribution and habitat

This lasiopetalum grows near creeks and drainage lines and near granite outcrops in the Jarrah Forest and Swan Coastal Plain biogeographic regions of south-western Western Australia.[2][3]

Conservation status

Lasiopetalum bracteatum is listed as "Priority Four" by the Government of Western Australia Department of Biodiversity, Conservation and Attractions,[2] meaning that is rare or near threatened.[8]

References

  1. ↑ "Lasiopetalum bracteatum". Australian Plant Census. Retrieved 2 February 2022.
  2. 1 2 3 4 "Lasiopetalum bracteatum". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  3. 1 2 Shepherd, Kelly A.; Wilkins, Carolyn F. (2018). "A taxonomic revision of species with a petaloid epicalyx bract allied to Lasiopetalum bracteatum (Malvaceae: Byttnerioideae)" (PDF). Nuytsia. 29: 162–166. Retrieved 27 January 2022.
  4. ↑ "Corethrostylis bracteata". APNI. Retrieved 2 February 2022.
  5. ↑ Endlicher, Stephan; Fenzl, Eduard (1839). Novarum stirpium decas I-X. pp. 1–2. Retrieved 2 February 2022.
  6. ↑ "Lasiopetalum bracteatum". APNI. Retrieved 2 February 2022.
  7. ↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 149. ISBN 9780958034180.
  8. ↑ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 2 February 2022.
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