Jacksonia lehmannii

Jacksonia lehmannii is an erect to prostrate or spreading, spindly shrub that typically grows to 0.1–1.0 m (3.9 in – 3 ft 3.4 in) high and 0.5–1.5 m (1 ft 8 in – 4 ft 11 in) wide. Its branches are greyish-geen, with sharply-pointed side branches. Its leaves are reduced to dark brown, egg-shaped scales, 0.7–0.3 mm (0.028–0.012 in) long and 0.7–1.4 mm (0.028–0.055 in) wide. The flowers are scattered along the branches on a pedicel 6.5–8 mm (0.26–0.31 in) long, with narrowly egg-shaped bracteoles 0.8–1.3 mm (0.031–0.051 in) long on the upper part of the pedicels. The floral tube is 0.5–1.5 mm (0.020–0.059 in) long and the sepals are membranous, with lobes 8–11 mm (0.31–0.43 in) long and 0.9–2 mm (0.035–0.079 in) wide. The standard petal is yellowish-orange with a red "eye", 5.5–8.2 mm (0.22–0.32 in) long, the wings yellowish-orange with red markings and 6.5–8.6 mm (0.26–0.34 in) long, and the keel red, 7.2–8.9 mm (0.28–0.35 in) long. The stamens have deep red filaments 5.7–8.6 mm (0.22–0.34 in) long. Flowering occurs from August to December, and the fruit is a woody hairy, elliptical pod 8–11.7 mm (0.31–0.46 in) long and 3.6–6.7 mm (0.14–0.26 in) wide.

This species of Jacksonia grows in shrubland or woodland in sandplains on sand over laterite in disjunct areas near Eneabba, between Maida Vale and Pinjarra, and south of Capel in the Geraldton Sandplains, Jarrah Forest and Swan Coastal Plain bioregions of south-western Western Australia.