Desmanthus leptophyllus Kunth

Acuan guadeloupense Britton & Rose, sp. nov
Shrubby, erect, simple or branched, slender, glabrous, 5 dm. high or higher. Stipules filiform, 1-2.5 mm. long; petiole and rachis nearly filiform ; petioles 8-12 mm. long; pinnae 3-5 pairs, with an orbicular gland about 0.5 mm. broad between the lower pair; leaflets 10-20 pairs, narrowly linear, acutish, 2-4 mm. long, the delicate midvein nearly central; peduncles slender, about 2 cm. long; legumes one to several, linear, 4-7 cm. long, 3-4 mm. wide, lorigattenuate above the middle.
Guadeloupe Island, West Indies, 1892, Pere Dtiss 2630.

Acuan insulare Britton & Rose, sp. nov
Suffrutescent, glabrous, erect or nearly so, 0.6-1.3 m. high. Stipules filiform, 3-5 mm. long; leaves 6 cm. long or shorter; petioles 5-10 mm. long; pinnae 2-6 pairs, with an orbicular gland 0.5-1 mm. broad between the lower pair; leaflets 10-16 pairs, linear, obtuse or acutish, 3-5 mm. wide, the delicate midvein somewhat excentric; peduncles 2-3 cm. long; heads severalflowered; stamens 10; legumes narrowly linear, 5-7 cm. long, 2-3.5 mm. wide, shorttipped.
Bermuda; Porto Rico; Cuba; Jamaica. Type from wooded hills near Santiago, Oriente, Cuba, March 10-25, 1912, Britton, Britton &f Cowell 12842.

Acuan latum Britton & Rose, sp. nov
Suffrutescent, erect, glabrous, or sparingly puberulent, up to 5 dm. high or higher. Stipules setiform, 3-5 mm. long; leaves 3-6 cm. long, the petiole and rachis slender; petioles 0.5-1 cm. long; pinnae 3-6 pairs; gland small, orbicular, borne at or below the lower pinnae; leaflets 12-20 pairs, linear, acute or acutish, 3-4 mm. long, delicately 1-veined; fruiting peduncles 1.5-3 cm. long; heads very small; legumes linear, short-pointed, 4-6 cm. long, 4-5 mm. wide.
Veracruz; El Salvador; Panama; Colombia. Type from Panama, January, IS60, Hayes 765.

Perennial, Shrubs, Stems woody below, or from woody crown or caudex, Taproot present, Nodules present, Stems erect or ascending, Stems or branches arching, spreading or decumbent, Stems less than 1 m tall, Stems 1-2 m tall, Stems greater than 2 m tall, Stems solid, Stems or young twigs glabrous or sparsely glabrate, Leaves alternate, Leaves petiolate, Extrafloral nectary glands on petiole, Stipules conspicuous, Stipules setiform, subulate or acicular, Stipules persistent, Stipules free, Leaves compound, Leaves bipinnate, Leaf or leaflet margins entire, Leaflets opposite, Leaflets 10-many, Leaves glabrous or nearly so, Inflorescences globose heads, capitate or subcapitate, Inflorescence axillary, Bracts very small, absent or caducous, Flowers actinomorphic or somewhat irregular, Calyx 5-lobed, Calyx glabrous, Petals united, valvate, Petals white, Petals greenish yellow, Imperfect flowers present, dioecious or polygamodioecious, 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 exserted from calyx, Fruit glabrous or glabrate, Fruit hairy, Fruit 3-10 seeded, Fruit 11-many seeded, Seed with elliptical line or depression, pleurogram, Seed surface smooth, Seeds olive, brown, or black.

Desmanthus leptophyllus là một loài thực vật có hoa trong họ Đậu. Loài này được Kunth miêu tả khoa học đầu tiên.