Description

Key Characters:

Growth Form: Tree commonly 8–10 m high but reaching 35 m high under favorable conditions.

Stems: Bark smooth and grey (young trees), aging fissured. Branchlets slender, terete (cylindrical) except flattened towards apices, glabrous.

Roots:

Leaves: Leaves simple, modified into phyllodes. Alternate. Phyllodes very narrowly elliptic, shallowly to obviously falcately recurved or sometimes straight and dimidiate (i.e. lower margin ± straight, upper margin convex), (8–) 10–20 (–22.5) cm long, (10–) 12–40 (–60) mm wide. Base tapered with pulvinus 2–6 mm long; gland 1, not prominent but slightly raised, 0–1 mm above pulvinus. Longitudinal veins numerous and rather close together, 3–5 (–6) more pronounced than the rest, remaining separate from one another and not confluent with lower margin at base of phyllode, not forming a net-like reticulum.

Flowers: Inflorescences comprising 1 to several spikes within axils of phyllodes; spikes 5–8.5 (–10) cm long, interrupted, bright yellow to golden; peduncles 4–8 (–20) mm long. Flowers 5‑merous. Calyx of 5 sepals; calyx 0.9–1.3 mm long, dissected for ¼–⅓ of its length, glabrous. Corolla of 5 petals; petals 1.7–2.4 mm long, dissected for c. ½ of its length, glabrous. Ovary superior, densely pubescent.

Fruit: Pods strongly and often irregularly curved (into an open circle) or spirally coiled; sometimes twisted; flat but outer margins prominently undulate; c. 5–8 cm long; (7–) 10–18 (–22) mm wide; thickly coriaceous to ± woody; variably pruinose; transversely veined. Seeds ± transverse; elliptic to broadly elliptic; flattened; 4–6 mm long; 3–4 mm wide; dark brown to black; shiny; areole open at hilar end; funicle/aril encircling seed; orange or sometimes yellow or red.

Ploidy:

Habitat:

Elevation Range: