About Acacia cupularis Domin
Acacia cupularis Domin is a hairless, open shrub that typically reaches 1 to 2.5 meters (3 feet 3 inches to 8 feet 2 inches) in height and up to 2.5 meters (8 feet 2 inches) in width. Its branchlets are often dark red-brown and covered with a white, powdery coating. The phyllodes are ascending to erect, straight, and narrowly linear, measuring 30 to 80 millimeters (1.2 to 3.1 inches) long and 1 to 4 millimeters (0.039 to 0.157 inches) wide. They are thick and bear two or three glands, with the lowest gland located 3 to 14 millimeters (0.12 to 0.55 inches) above the base of the phyllode. Flowers are arranged in spherical heads, grouped into two or three racemes that are 1 to 7 millimeters (0.039 to 0.276 inches) long. Each head sits on a peduncle 2 to 6 millimeters (0.079 to 0.236 inches) long, and holds 16 to 22 golden yellow flowers. Flowering takes place from July to December. The seed pods are more or less erect, with a shape somewhat resembling a string of beads. They grow up to 70 millimeters (2.8 inches) long and 4 to 5 millimeters (0.16 to 0.20 inches) wide, with a crusty texture and dark brown color. The seeds are oblong, dull, and light brown, measuring 3 to 5 millimeters (0.12 to 0.20 inches) long, with an orange to scarlet aril. This wattle species has a wide distribution in coastal and near-coastal areas, ranging from near Albany in southern Western Australia, through South Australia, to the Victorian border. It also grows inland as far as Dimboola in western Victoria and Three Springs in Western Australia. It grows in sand, loam, or sandy clay within mallee communities.