Caesalpinia culebrae (Britton & Wilson)Alain, Bull. Torrey Bot. Club 90: 187. 1963.
Basionym: Guilandina culebrae Britton & Wilson
Scandent shrub, with many lateral branches along the main stem, attainig 2 m in length. Stems cylindrical, unarmed, finely pubescent. Leaves bipinnate, paripinnate, ca. 22 × 14 cm; pinnae 7-8 pairs, opposite; leaflets 5-7 pairs per pinna, opposite, 1-1.5 × 0.9-1.4 cm, elliptical or ellipticobovate, chartaceous, the apex rounded, emarginate, the base unequal, one side rounded, the other obtuse, the margins entire, revolute, ciliate; upper surface glabrous, slightly punctate; lower surface puberulent, with the midvein prominent; petiolules short, tomentulose; petioles and rachis unarmed, tomentulose; stipules minute, deciduous. Flowers in axillary racemes, 6-10 cm long; rachis tomentulose; bracts lanceolate, with the apex caudate, ca. 4 mm long, deciduous. Calyx campanulate, ca. 8 mm long, tomentose, the sepals reflexed, oblong. Petals yellow, 7-8 mm long, spathulate. Legumes elliptic-circular, ca. 7 × 4 cm, flattened, unarmed, apiculate at the apex. Seeds globose, ca. 1.7 cm in diameter, yelloworange.
Phenology: Collected in flower and fruit in March.
Status: Endemic, known from Culebra from very few collections.
Distribution: Sandy dunes on Culebra and Cayo Diablo.