Petrophile chrysantha

Petrophile chrysantha is a species of flowering plant in the family Proteaceae and is endemic to southwestern Western Australia. It is a small shrub with crowded, sharply-pointed, pinnately-divided leaves, and oval heads of hairy, cream-coloured to dark yellow flowers.

Petrophile chrysantha
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Petrophile
Species:
P. chrysantha
Binomial name
Petrophile chrysantha
Synonyms[1]

Petrophila chrysantha Meisn. orth. var.

Description

Petrophile chrysantha is a shrub that typically grows to a height of 0.5–1 m (1 ft 8 in–3 ft 3 in) and has hairy young branchlets. The leaves are crowded along the branchlets, 5–20 mm (0.20–0.79 in) long on a petiole 1–4 mm (0.039–0.157 in) long. They are needle-like, pinnately divided to the midrib with sharply-pointed pinnae up to 10 mm (0.39 in) long. The flowers are arranged on the ends of branchlets in sessile, oval heads about 10 mm (0.39 in) long, with broad, overlapping involucral bracts at the base. The flowers are up to 14 mm (0.55 in) long, cream-coloured to dark yellow and densely hairy. Flowering occurs from June to October and the fruit is a nut, fused with others in a spherical to oval head about 10 mm (0.39 in) in diameter.[2][3]

Taxonomy

Petrophile chrysantha was first formally described in 1855 by Carl Meissner in Hooker's Journal of Botany and Kew Garden Miscellany from material collected by James Drummond.[4][5] The specific epithet (chrysantha) means "golden-flowered".[6]

Distribution and habitat

This petrophile grows in shrubland and woodland between Regans Ford, Eneabba and Marchagee in the Geraldton Sandplains and Swan Coastal Plain biogeographic regions of southwestern Western Australia.[2][3]

Conservation status

Petrophile chrysantha is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.[3]

References
  1. "Petrophile chrysantha". Australian Plant Census. Retrieved 6 December 2020.
  2. Foreman, David B. "Petrophile chrysantha". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 6 December 2020.
  3. "Petrophile chrysantha". FloraBase. Western Australian Government Department of Parks and Wildlife.
  4. "Petrophile chrysantha". APNI. Retrieved 6 December 2020.
  5. Meissner, Carl (1855). "New Proteaceae of Australia". Hooker's Journal of Botany and Kew Gardens Miscellany. 7: 68. Retrieved 6 December 2020.
  6. Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 163. ISBN 9780958034180.
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