Androcalva melanopetala
In Plumridge Lakes Nature Reserve
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malvales
Family: Malvaceae
Genus: Androcalva
Species:
A. melanopetala
Binomial name
Androcalva melanopetala
Synonyms[1]

Androcalva melanopetala is a species of flowering plant in the family Malvaceae and is endemic to southern inland Western Australia. It is a sometimes prostrate shrub that has densely hairy new growth, egg-shaped to elliptic leaves with rounded teeth on the edges, and clusters of white or cream-coloured and pink to red flowers.

Description

Androcalva melanopetala is a shrub that typically grows to 50 cm (20 in) high and 100 cm (39 in) wide but is sometimes prostrate, its new growth densely covered with golden hairs. The leaves are egg-shaped to elliptic, 15–30 mm (0.59–1.18 in) long and 5–28 mm (0.20–1.10 in) wide on a petiole 5–8 mm (0.20–0.31 in) long with narrowly triangular stipules 2–5 mm (0.079–0.197 in) long at the base. The edges of the leaves are rolled under and have rounded teeth, the upper surface with impressed veins and the lower surface densely covered with greyish-white hairs. The flowers are arranged in groups of 5 to 21 on a peduncle 1–4 mm (0.039–0.157 in) long, each flower 6–8 mm (0.24–0.31 in) in diameter, on a pedicel 2.5–4 mm (0.098–0.157 in) long, with bracts 2–3 mm (0.079–0.118 in) long at the base. The flowers have 5 white to cream-coloured, petal-like sepals, the petals pink to red with a broadly egg-shaped ligule shorter than the sepal lobes. There is a single red, 3-lobed staminode between each pair of stamens. Flowering occurs from September to January.[2]

Taxonomy

This species was first formally described in 1876 by Ferdinand von Mueller who gave it the name Commersonia melanopetala in his Fragmenta Phytographiae Australiae, from specimens collected by Jess Young near "Victoria-Springs".[3][4] In 2011, Carolyn Wilkins and Barbara Whitlock transferred the species to Androcalva as A. melanopetala in Australian Systematic Botany.[5] The specific epithet (melanopetala) means "black petals", referring to the petals that age to purplish-black.[2][6]

Distribution and habitat

This androcalva grows in mallee and grassland, on sand dunes and sand plains in the Great Victoria Desert between Cundeelee, Plumridge Lakes and Queen Victoria Spring Nature Reserve in the Coolgardie and Great Victoria Desert bioregions of southern inland Western Australia.[2][7]

Conservation status

Androcalva melanopetala is listed as "not threatened" by the Western Australian Government Department of Biodiversity, Conservation and Attractions.[7]

References

  1. 1 2 "Androcalva melanopetala". Australian Plant Census. Retrieved 25 April 2023.
  2. 1 2 3 Blake, Trevor L. (2021). Lantern bushes of Australia ; Thomasias & allied genera : a field and horticultural guide. Victoria: Australian Plants Society, Keilor Plains Group. pp. 128–129. ISBN 9780646839301.
  3. ↑ "Commersonia melanopetala". Australian Plant Name Index. Retrieved 25 April 2023.
  4. ↑ von Mueller, Ferdinand (1876). Fragmenta Phytographiae Australiae. Melbourne: Victorian Government Printer. p. 21. Retrieved 25 April 2023.
  5. ↑ "Androcalva melanopetala". APNI. Retrieved 25 April 2023.
  6. ↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 250. ISBN 9780958034180.
  7. 1 2 "Androcalva melanopetala". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
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