About Petrophile brevifolia Lindl.
Petrophile brevifolia is a low, multi-stemmed shrub that is either erect or spreading, and does not form a lignotuber. It typically grows 0.2 to 2 meters (7.9 inches to 6 feet 6.7 inches) tall, and has glabrous branchlets and leaves. The leaves are needle-shaped, 10 to 50 millimeters (0.39 to 1.97 inches) long, with a sharply-pointed tip around 2 millimeters (0.079 inches) long. Flowers are arranged at the ends of branchlets in sessile, spherical heads that are 10 to 15 millimeters (0.39 to 0.59 inches) in diameter. Many linear or tapering involucral bracts grow at the base of these flower heads. The individual flowers are 12 to 20 millimeters (0.47 to 0.79 inches) long, yellow, creamy yellow or white, and hairy. Flowering takes place from June to December. The fruit is a nut that is fused with other nuts to form an oval to spherical head about 10 to 20 millimeters (0.39 to 0.79 inches) long. This species of petrophile grows in shrubland, heath and woodland. It is widespread and common across the southwest of Western Australia, ranging from Kalbarri National Park to Ongerup.
