Petrophile juncifolia

Petrophile juncifolia is a species of flowering plant in the family Proteaceae and is endemic to southwestern Western Australia. It is a small, domed shrub with needle-shaped leaves, and heads of yellow to cream-coloured flowers.

Petrophile juncifolia
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Petrophile
Species:
P. juncifolia
Binomial name
Petrophile juncifolia

Description

Petrophile juncifolia is a shrub that typically grows to a height of 0.2–0.8 m (7.9 in – 2 ft 7.5 in). The leaves are needle-shaped but not sharply pointed, 150–300 mm (5.9–11.8 in) long, 1–1.5 mm (0.039–0.059 in) wide and sometimes curved. The flowers are yellow to cream-coloured, hairy, 15–22 mm (0.59–0.87 in) long and arranged in heads. Flowering occurs from October to November and the fruit is a nut, fused with others in a head 10–25 mm (0.39–0.98 in) long.[2][3]

Taxonomy

Petrophile juncifolia was first formally described in 1840 by John Lindley in A Sketch of the Vegetation of the Swan River Colony.[4][5] The specific epithet (juncifolia) means "rush-leaved".[6]

Distribution and habitat

This petrophile mostly grows in winter-wet places between Perth and Waroona in the Jarrah Forest and Swan Coastal Plain biogeographic regions in the southwest of Western Australia.[2][3]

Conservation status

Petrophile juncifolia is classified as "not threatened" by the Government of Western Australia Department of Parks and Wildlife.[2]

References
  1. "Petrophile juncifolia". Australian Plant Census. Retrieved 15 December 2020.
  2. "Petrophile juncifolia". FloraBase. Western Australian Government Department of Biodiversity, Conservation and Attractions.
  3. Rye, Barbara L.; Hislop, Mark C. (2005). "A taxonomic update of Petrophile sect. Arthrostigma (Proteaceae)" (PDF). Nuytsia. 15 (3): 470. Retrieved 15 December 2020.
  4. "Petrophile juncifolia". APNI. Retrieved 15 December 2020.
  5. Lindley, John (1840). A Sketch of the Vegetation of the Swan River Colony. London: James Ridgway. p. xxxv. Retrieved 15 December 2020.
  6. Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 229. ISBN 9780958034180.
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