Caesalpinia andamanica

Author: (Prain) Hattink

Morphological description (see also description of Genus Caesalpinia )
(andamanica Caesalpinia FT20 )
Liana up to 20 m, glabrous in all vegetative parts, prickles recurved, 2–6 mm long. Stipules caducous, scale-like, 0.5 by 2 mm, acute, appressed.

Leaves: rachis 15–50 cm long; pinnae 2–6 pairs, 7–16 cm long, ending in c. 1 mm long tip. Leaflets alternate, sometimes subopposite towards the top of a pinna, 6–10 per pinna, petiolulate (2–3 mm), membranous, oblong-elliptic, rarely obovate, 1.5–6 by 1–3.5 cm, base cuneate, apex obtuse to rounded, sometimes somewhat retuse.

Inflorescence: Racemes axillary and terminal, paniculate, 25–50(–75) cm long, the rachis puberulous or glabrous; pedicels 6–10 mm, articulated 1–2 mm below the top.

Flower buds glabrous. Hypanthium symmetric, 1–2 by 4(–6) mm. Sepals 4–12 by 6 mm. Petals spreading, obovate or elliptic, 9–10 by 5–7 mm, shortly clawed, glabrous. Stamens exserted; filaments 12–14 mm; anthers 3 mm long. Pistil glabrous; stipe 1 mm, ovary c. 4 by 1 mm, 4-ovuled; style c. 12 mm; stigma somewhat bilobed, ciliate.

Pods indehiscent, 1–15 by 2.5–4 cm (incl. 9–12 mm wide wing), often strongly reticulate, base cuneate, apex acute. Seeds 3 or 4, spaced, ovate in outline, flat, c. 11 by 6 mm, brown, smooth. andamanica Caes pod FM19c

Burma (Tenasserim), India (S Andamans), Thailand (Peninsula, Kaw Chang, Pang-nga, Surat); Malesia: Sumatra (Lampung), Malay Peninsula (Perlis, Perak, Salak, Ipoh).

Habitat & Ecology
In scrub, evergreen primary forest, along rivers and roads, up to 500 m altitude. Flowering in May and October; fruiting from October–March.