About Daviesia physodes A.Cunn. ex G.Don
Daviesia physodes is an open, hairless, usually glaucous shrub that typically grows up to 1.8 metres (5 feet 11 inches) tall. The phyllodes on the lower section of the plant are vertically flattened and wedge-shaped, reaching up to 55 mm (2.2 inches) long and 10 mm (0.39 inches) high. Phyllodes near the ends of branchlets are tapered, sharply pointed, and grow up to 22 mm (0.87 inches) long and 3 mm (0.12 inches) wide. Its flowers are arranged in groups of two to four, growing on a peduncle around 0.5 mm (0.020 inches) long, with a rachis also around 0.5 mm (0.020 inches) long. Each individual flower sits on a pedicel 1.5–3 mm (0.059–0.118 inches) long. The sepals are around 1.75 mm (0.069 inches) long: the upper two sepals have lobes joined for most of their length, and the lower three lobes are around 0.25 mm (0.0098 inches) long. The standard petal is broadly egg-shaped with a notched centre, about 7 mm (0.28 inches) long and 8 mm (0.31 inches) wide, and yellow with a pink tinge. The wings are 5.5–6.0 mm (0.22–0.24 inches) long and pink to red, and the keel is 7.0–7.5 mm (0.28–0.30 inches) long and also pink to red. Flowering occurs from July to November, and the fruit is an inflated, triangular pod 11–16 mm (0.43–0.63 inches) long. This bitter-pea grows in open forest or kwongan, between Geraldton, Augusta and Narrogin in near-coastal areas of the Geraldton Sandplains, Jarrah Forest and Swan Coastal Plain biogeographic regions of south-western Western Australia.
