Jacksonia thesioides

Jacksonia thesioides is an erect to prostrate, coarse to slender shrub that typically grows up to 0.1–4 m (3.9 in – 13 ft 1.5 in) high and 1–3 m (3 ft 3 in – 9 ft 10 in) wide. It has dull green branches, the end branches sharply-pointed cladodes, its leaves reduced to egg-shaped, dark brown scales, 0.8–1.6 mm (0.031–0.063 in) long and 0.4–1 mm (0.016–0.039 in) wide with a sharply-pointed tip. The flowers are sparsely arranged along the branches on pedicels 1.1–1.5 mm (0.043–0.059 in) long, with egg-shaped bracteoles 0.7–1.0 mm (0.028–0.039 in) long and 0.2–0.6 mm (0.0079–0.0236 in) wide below the sepals. The floral tube is 0.8–1.5 mm (0.031–0.059 in) long and is ribbed, and the sepals are membranous, with upper lobes 2.1–2.3 mm (0.083–0.091 in) long, 0.9–1.0 mm (0.035–0.039 in) wide and fused for 1.1–1.9 mm (0.043–0.075 in). The flowers are hot pink to mauve, the standard petal 2.2–4.1 mm (0.087–0.161 in) long and 3–4.8 mm (0.12–0.19 in) deep, the wings 3.5–4.0 mm (0.14–0.16 in) long, and the keel 2.9–3.5 mm (0.11–0.14 in) long. The stamens have green filaments, 1.3–3.1 mm (0.051–0.122 in) long. Flowering occurs throughout the year, and the fruit is a woody, elliptic, densely hairy pod 4.0–5.5 mm (0.16–0.22 in) long and 1.8–2.7 mm (0.071–0.106 in) wide.

This species of Jacksonia grows in woodland in sandy soil over granite or sandstone in north-eastern Queensland, south to Townsville and on Torres Strait Islands.