Description

Key Characters:

Growth Form: Trees or shrubs, armed with stipular and stipular spines.

Stems: Usually with nectary glands on rachises.

Roots:

Leaves: Leaves compound (bipinnate). Alternate. Leaflets 1 to numerous pairs, opposite. Usually petiolate, with nectary glands on petioles, leaflets sessile. Stipules present as a pair of spines; Leaflet stipels present as a pair of spines.

Flowers: Flowers uniform, in heads, these solitary or in terminal or axillary panicles. Flowers mimosaceous, bisexual (perfect). Calyx campanulate, shortly 4–6-lobed. Corolla funnel form, 4–6-lobed above the middle. Stamens few to numerous; filaments connate at base, long–exserted. Ovary superior, sessile or stipitate, flattened; ovules numerous.

Fruit: Pods flat; straight or spirally curved; dehiscent; sometimes irregularly so; valves chartaceous; reddish within; not segmented. Seeds several; ovoid or orbicular; compressed; with a distinct pleurogram; arillate.

Ploidy:

Habitat:

Elevation Range: