About Daviesia umbellulata Sm.
Daviesia umbellulata Sm. is a slender shrub that typically reaches a height of 0.3 to 1 metre (1 foot 0 inch to 3 feet 3 inches), and has ribbed branchlets. Its phyllodes range from egg-shaped to linear, sometimes with a heart-shaped base, and measure 7 to 30 millimetres (0.28 to 1.18 inches) long and 0.5 to 8 millimetres (0.020 to 0.315 inches) wide, ending in a sharply-pointed tip. Flowers are arranged in groups of three to six. Each group grows on a peduncle 3 to 50 millimetres (0.12 to 1.97 inches) long, while individual flowers sit on pedicels 4 to 5.5 millimetres (0.16 to 0.22 inches) long. The five sepals are 3.0 to 3.5 millimetres (0.12 to 0.14 inches) long and joined at the base; the upper two sepals are fused into a single "lip", and the lower three are less than 1 millimetre (0.039 inches) long. The standard petal is egg-shaped with a central notch, yellow to orange with a dark maroon base, and 5 to 7 millimetres (0.20 to 0.28 inches) long. The wings are yellow with a maroon base and 4.5 to 6.0 millimetres (0.18 to 0.24 inches) long. The keel is maroon and 4.0 to 4.5 millimetres (0.16 to 0.18 inches) long. Flowering takes place from August to November, and the fruit is a triangular pod 8 to 9 millimetres (0.31 to 0.35 inches) long. This bitter-pea grows in the understorey of open forest, woodland, or heath. It mainly occurs near the coast between Shoalwater Bay in Queensland and Sydney, New South Wales, with one disjunct population near Torrington.
