Caesalpinia portoricensis (Britton & P. Wilson) Alain

Guilandina portoricensis Britton & Wilson, Sci. Surv Porto Rico & Virgin Ids. 5: 380. 1924.
Stems unarmed, up to 6 m. long, the twigs puberulent. Stipules none; leaves about 1.5 dm. long, the rachis puberulent; pinnae 3-5 pairs, bearing a few short prickles; leaflets 3-5 pairs, oval-orbicular, 1-2 cm. long, chartaceous, inequilateral, light green, dull, glabrous, rounded or emarginate at the apex, rounded at the base ; legume 5-6 cm. long, about 4 cm. wide, unarmed or with a few short marginal prickles; seeds dark brown to nearly black, 1.5-2 cm. long, shining, smooth, not horizontally striate.
Type locality: Salinas de Giianica, Porto Rico. DisTRiBrriON: Known only from the type locality.

Perennial, Trees, Shrubs, Vines, twining, climbing, Woody throughout, Stems erect or ascending, Stems greater than 2 m tall, Stems solid, Stems or young twigs sparsely to densely hairy, Leaves alternate, Leaves petiolate, Stipules inconspicuous, absent, or caducous, Stipules setiform, subulate or acicular, Stipules deciduous, S tipules free, Leaves compound, Leaves even pinnate, Leaves bipinnate, Leaf or leaflet margins entire, Leaflets opposite, Leaflets alternate or subopposite, Leaflets 10-many, Leaves glabrous or nearly so, Inflorescences racemes, Inflorescence axillary, Inflorescence terminal, Bracts very small, absent or caducous, Flowers actinomorphic or somewhat irregular, Calyx 5-lobed, Calyx glabrous, Petals separate, Petals clawed, Petals orange or yellow, Banner petal ovoid or obovate, Banner petal suborbicular, broadly rounded, Wing petals narrow, oblanceolate to oblong, Wing tips obtuse or rounded, Keel tips obtuse or rounded, not beaked, Stamens 9-10, Stamens completely free, separate, Stamens long exserted, Filaments glabrous, Style terete, Fruit a legume, Fruit unilocular, Fruit freely dehiscent, Fruit elongate, straight, Fruit oblong or ellipsoidal, Fruit exserted from calyx, Fruit glabrous or glabrate, Fruit 3-10 seeded, Seeds ovoid to rounded in outline, Seed surface smooth, See ds olive, brown, or black.

Caesalpinia portoricensis là một loài thực vật có hoa trong họ Đậu. Loài này được (Britton & P.Wilson) Alain miêu tả khoa học đầu tiên.