Bossiaea concinna

Bossiaea concinna is a species of flowering plant in the pea family Fabaceae and is endemic to the south-west of Western Australia. It is an erect, spiny, more or less glabrous shrub with oblong leaves and bright yellow and red flowers.

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Bossiaea concinna is an erect, compact shrub that typically grows up to 1.5 m (4 ft 11 in) high and 2.0 m (6 ft 7 in) wide and is more or less glabrous with short side shoots ending in a sharp point. The leaves are arranged alternately and are oblong, 1.8–6.5 mm (0.071–0.256 in) long and 1.0–1.3 mm (0.039–0.051 in) wide on a petiole 0.4–0.8 mm (0.016–0.031 in) long with narrow egg-shaped stipules 0.5–0.9 mm (0.020–0.035 in) long at the base. The flowers are borne singly or in small groups on a pedicel 3.5–11 mm (0.14–0.43 in) long with a single bract 0.6–1.3 mm (0.024–0.051 in) long. The five sepals are joined at the base forming a tube 2.0–3.5 mm (0.079–0.138 in) long, the two upper lobes 0.8–1.8 mm (0.031–0.071 in) long and the lower lobes slightly shorter. The standard petal is 8.0–9.2 mm (0.31–0.36 in) long, bright yellow with a pinkish-red base, the wings red and 5.8–7.4 mm (0.23–0.29 in) long, and the keel 7.0–7.4 mm (0.28–0.29 in) long and dark pinkish-red. Flowering occurs from June to September and the fruit is a pod 10–16 mm (0.39–0.63 in) long.