Tall, slender, viscid shrubs or small trees 3-5 m high; branches slender, slightly angular-striate, erect or spreading, becoming less resinous on mature stems. <P>Phyllodes oblong to linear-lanceolate or narrow-elliptic, 4-12 cm long, 5-15 mm broad, straight or slightly curved, viscid, glandular-dotted, 2 longitudinal veins with the one near the centre usually more prominent than the other just in from the margin, lateral veins few and obscure, apex acute usually shortly mucronate; glands small, one near the base and sometimes up to 3 additional glands scattered along the upper margin. <P>Inflorescences axillary, mostly twin or ternate on a very short thick common peduncle; flower-heads globular, bright yellow, 50-60-flowered; peduncles 5-10 mm long, viscid, slightly hairy; flowers 5-merous. <P>Legumes linear, 6-10 cm long, 4-5 mm broad, straight or curved, biconvex, viscid and greenish when young, becoming less viscid and brown when mature, glabrous, apex acute, margins straight or slightly constricted between seeds. Seeds longitudinal in legume; funicle short, with two or three short folds under a small aril.