Petrophila ericifolia f. subglabraDomin orth. var.
Petrophile ericifolia f. subglabra Domin
Flower detail, subsp. ericifolia
Petrophile ericifolia is a species of flowering plant in the family Proteaceae and is endemic to southwestern Western Australia. It is a shrub with cylindrical leaves, and oval to spherical heads of hairy, yellow flowers.
Description
Petrophile ericifolia is a shrub that typically grows to a height of 0.3–1.5 m (1 ft 0 in – 4 ft 11 in) and has branchlets and leaves that are sometimes covered with curly hairs when young but that become glabrous with age. The leaves are cylindrical, up to 12 mm (0.47 in) long with a rough surface. The flowers are arranged on the ends of branchlets, in sessile, oval to spherical heads 10–20 mm (0.39–0.79 in) in diameter, with many egg-shaped, pointed involucral bracts at the base. The flowers are 10–20 mm (0.39–0.79 in) long, yellow and hairy. Flowering occurs from August to November and the fruit is a nut, fused with others in an oval head up to 20 mm (0.79 in) in diameter.[2][3]
Petrophile ericifolia R.Br. subsp. ericifolia[7] has more or less glabrous leaves up to 12 mm (0.47 in) long, flower heads 15–20 mm (0.59–0.79 in) in diameter and flowers up to 20 mm (0.79 in) long;[8][9]
Petrophile ericifolia subsp. subpubescens (Domin) Foreman[10] has leaves up to 3–6 mm (0.12–0.24 in) long with a medium to sparse covering of short hairs, flower heads about 10 mm (0.39 in) in diameter and flowers 13–16 mm (0.51–0.63 in) long.[11][12] Subspecies subpubescens was first formally described in 1923 by Karel Domin as Petrophile ericifolia f. subpubescens.[13]
^Foreman, David B. "Petrophile ericifolia". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 11 December 2020.
^Sharr, Francis Aubi; George, Alex (2019). Western Australian Plant Names and Their Meanings (3rd ed.). Kardinya, WA: Four Gables Press. p. 193. ISBN9780958034180.
^ abForeman, David B. "Petrophile ericifolia subsp. ericifolia". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 11 December 2020.
^ abForeman, David B. "Petrophile ericifolia subsp. subpubescens". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 11 December 2020.
