Biology:Petrophile vana
| Petrophile vana | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Proteales |
| Family: | Proteaceae |
| Genus: | Petrophile |
| Species: | P. vana
|
| Binomial name | |
| Petrophile vana Cranfield & T.D.Macfarl.[1]
| |
Petrophile vana is a species of flowering plant in the family Proteaceae and is endemic to Western Australia. It is a shrub with needle-shaped, sharply-pointed leaves, and spherical to oval heads of small numbers of hairy, white flowers.
Description
Petrophile vana is a shrub that typically grows to a height of 0.4–1.7 m (1 ft 4 in–5 ft 7 in) and has hairy young branchlets that become glabrous as they age. The leaves are needle-shaped, 30–60 mm (1.2–2.4 in) long, 1–1.5 mm (0.039–0.059 in) wide and sharply-pointed. The flowers are arranged in leaf axils in sessile, spherical to oval heads of up to four flowers, the heads 10 mm (0.39 in) long and 3–4 mm (0.12–0.16 in) wide, with about four overlapping, egg-shaped involucral bracts at the base. The flowers are 7–10 mm (0.28–0.39 in) long, white and hairy. Flowering has been observed in September and the fruit is a small nut.[2][3]
Taxonomy
Petrophile vana was first formally described in 2007 by Raymond Jeffrey Cranfield and Terry Desmond Macfarlane in the journal Nuytsia from material collected by Cranfield on Melangata Station in 1987.[4] The specific epithet (vana) means "empty, idle or worthless", but said by the authors to mean "trifling, referring to the non-showy appearance of the plant".[2][5]
Distribution and habitat
This petrophile is only known from a few locations in the Murchison and Yalgoo biogeographic regions where it grows in shallow, gritty clay soils over laterite, sometimes in heath with Thryptomene species.[2][3]
Conservation status
Petrophile vana is classified as "Priority One" by the Government of Western Australia Department of Parks and Wildlife,[3] meaning that it is known from only one or a few locations which are potentially at risk.[6]
References
- ↑ "Petrophile vana". Australian Plant Census. https://biodiversity.org.au/nsl/services/apc-format/display/211501.
- ↑ 2.0 2.1 2.2 Cranfield, R.J.; Macfarlane, T.D. (2007). "A new species of Petrophile (Proteaceae) from south-western Australia". Nuytsia 17: 154–157, Figs 1, 2. https://florabase.dpaw.wa.gov.au/science/nuytsia/525.pdf.
- ↑ 3.0 3.1 3.2 "Petrophile vana". FloraBase. Western Australian Government Department of Parks and Wildlife. https://florabase.dpaw.wa.gov.au/browse/profile/13782.
- ↑ "Petrophile vana". APNI. https://id.biodiversity.org.au/instance/apni/625944.
- ↑ Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 327. ISBN 9780958034180.
- ↑ "Conservation codes for Western Australian Flora and Fauna". Government of Western Australia Department of Parks and Wildlife. https://www.dpaw.wa.gov.au/images/documents/plants-animals/threatened-species/Listings/Conservation%20code%20definitions.pdf.
Wikidata ☰ Q18081644 entry
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