About Bossiaea rosmarinifolia Lindl.
Bossiaea rosmarinifolia, commonly known as Grampians bossiaea, is an erect or spreading shrub that usually reaches a height of 2.5 to 3 meters (8 feet 2 inches to 9 feet 10 inches). It has cylindrical stems. Its leaves are linear, 10 to 28 millimeters (0.39 to 1.10 inches) long and 1 to 3 millimeters (0.039 to 0.118 inches) wide, borne on a petiole up to 1.5 millimeters (0.059 inches) long. Reddish stipules 2 to 4 millimeters (0.079 to 0.157 inches) long grow at the base of each leaf. Flowers are arranged singly or in pairs, 7 to 12 millimeters (0.28 to 0.47 inches) long, and grow on a thin, thread-like pedicel 6 to 8 millimeters (0.24 to 0.31 inches) long. Crowded bracts less than 1 millimeter (0.039 inches) long are present at the base of the pedicel, and bracteoles around 1 millimeter (0.039 inches) long are located near the middle of the pedicel. The five sepals are 3 to 5 millimeters (0.12 to 0.20 inches) long, joined at the base to form a tube. The upper sepal lobes are 1 to 2.5 millimeters (0.039 to 0.098 inches) long and 2.5 to 3 millimeters (0.098 to 0.118 inches) wide, while the lower lobes are shorter and much narrower. The standard petal is yellow with a red base and up to 12 millimeters (0.47 inches) long. The wing petals are yellow with red or brownish markings, and around 2.5 millimeters (0.098 inches) wide. The keel petal is red, and around 3.5 millimeters (0.14 inches) wide. Flowering takes place from September to October. The fruit is an elliptic pod 10 to 15 millimeters (0.39 to 0.59 inches) long. This species grows in open forest within Grampians National Park.
