About Bossiaea rhombifolia Sieber ex DC.
Bossiaea rhombifolia is an erect, mostly glabrous shrub that usually grows up to 2 meters (6 feet 7 inches) tall, and has slightly flattened young stems. Its leaves are diamond-shaped, roughly round, or broadly egg-shaped, measuring 4–12 mm long and wide, growing on a petiole 0.5–1.0 mm long. Triangular brown stipules around 1 mm long are present at the base of each leaf. The flowers are 7–12 mm long, borne on pedicels up to 5 mm long, with 0.5–0.8 mm long bracts at the pedicel base. Egg-shaped bracteoles 0.8–1.5 mm long are located near the base of the pedicel. The five sepals are 2.7–5 mm long and joined at the base to form a tube. The upper two sepal lobes are 0.6–1.5 mm long and 1.5–2.5 mm wide, while the lower three lobes are slightly shorter and 0.7–1.0 mm wide. The standard petal is yellow with a red base and grows up to 12 mm long. The wing petals are brownish-red and 2.5–3.0 mm wide, and the keel petal is pinkish to dark red and 3–4 mm wide. Flowering occurs between July and October, and the fruit is an oblong pod 13–18 mm long. This species of Bossiaea grows in woodland and forest, distributed from near Stanthorpe in south-eastern Queensland to Wadbilliga National Park near Moruya in south-eastern New South Wales.
