Thomasia montana

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Thomasia montana
Thomasia montana.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malvales
Family: Malvaceae
Genus: Thomasia
Species:
T. montana
Binomial name
Thomasia montana

Thomasia montana, commonly known as hill thomasia, [2] is a species of flowering plant in the family Malvaceae and is endemic to the south-west of Western Australia. It is an upright to low, ground-covering shrub with hairy new growth, egg-shaped to broadly oblong leaves, sometimes with wavy or toothed edges, and pale purplish-pink to maroon flowers.

Contents

Description

Thomasia montana is an upright to low, ground covering shrub that typically grows to 0.3–1 m (1 ft 0 in – 3 ft 3 in) high and up to 1 m (3 ft 3 in) wide and has its young growth covered with star-shaped hairs. The leaves are egg-shaped to broadly oblong, 15–25 mm (0.59–0.98 in) long and 8–10 mm (0.31–0.39 in) wide on a petiole 6–8 mm (0.24–0.31 in) long with lop-sided to kidney-shaped stipules at the base. The edges of the leaves are sometimes wavy or toothed, the lower surface with a few star-shaped hairs. The flowers are arranged in densely hairy racemes of 3 to 5 on a peduncle 50–60 mm (2.0–2.4 in) long, each flower 8–14 mm (0.31–0.55 in) in diameter on a hairy pedicel 8–10 mm (0.31–0.39 in) long, with hairy, linear bracteoles at the base. The sepals are pale purplish-pink to maroon and joined for about half their length and the petals are tiny. Flowering occurs in September and October. [2] [3] [4]

Taxonomy and naming

Thomasia montana was first formally described in 1845 by Ernst Gottlieb von Steudel in Lehmann's Plantae Preissianae from specimens collected in 1840. [5] [6] The specific epithet (montana) means "pertaining to mountains". [7]

Distribution and habitat

Hill thomasia grows in woodland and shrubland, sometimes on rocky outcrops or between granite boulders, near Brookton and York in the Avon Wheatbelt and Jarrah Forest bioregions of south-western Western Australia. [3] [4]

Conservation status

Thomasia montana is listed as "vulnerable" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 and as "Threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions, [4] meaning that it is in danger of extinction. [8]

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<i>Chorizema spathulatum</i> Species of legume

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References

  1. ↑ "Thomasia montana". Australian Plant Census. Retrieved 19 January 2023.
  2. 1 2 "Approved Conservation Advice for Thomasia montana (Hill Thomasia)" (PDF). Australian Government Department of Climate Change, Energy, the Environment and Water. Retrieved 19 January 2023.
  3. 1 2 Blake, Trevor L. (2021). Lantern bushes of Australia; Thomasias & allied genera : a field and horticultural guide. Victoria: Australian Plants Society, Keilor Plains Group. pp. 38–39. ISBN   9780646839301.
  4. 1 2 3 "Thomasia montana". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  5. ↑ "Thomasia montana". Australian Plant Name Index. Retrieved 8 January 2023.
  6. ↑ von Steudel, Ernst G. (1845). Lehmann, Johann G.C.; Preiss, Ludwig (eds.). Plantae preissianae sive enumeratio plantarum quas in australasia occidentali et meridionali-occidentali. Hamburg: Sumptibus Meissneri. pp. 230–231. Retrieved 19 January 2023.
  7. ↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 255. ISBN   9780958034180.
  8. ↑ "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 19 January 2023.
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