Monographs Details:
Authority:
Cowan, Richard S. 1967. Swartzia (Leguminosae, Caesalpinioideae Swartzieae). Fl. Neotrop. Monogr. 1: 3-228. (Published by NYBG Press)
Cowan, Richard S. 1967. Swartzia (Leguminosae, Caesalpinioideae Swartzieae). Fl. Neotrop. Monogr. 1: 3-228. (Published by NYBG Press)
Family:
Fabaceae
Fabaceae
Description:
Species Description - Tree with the branchlets densely rusty-malpighio-strigulose; stipules triangular, ca 0.6 mm long and wide, minutely malpighio-strigulose; petioles 7-10 mm long, terete, minutely malpighio-strigulose, the rachis 3.5-4.5 cm long, slightly canaliculate on the upper surface, densely and minutely malpighio-strigulose; leaflets 2- or 3-jugate, the petiolules 3-5 mm long, minutely malpighio-strigulose, the blades 5-9 cm long, 2-3.5 cm wide, lanceolate or narrowly ovate (basal pair) to narrowly elliptic, the base acute to subobtuse, the apex acuminate, glabrous above, densely rusty-malpighio-strigulose beneath, the costa impressed and the primary veins plane and obscure on the upper surface, the costa and the primaries more or less salient beneath; inflorescence paniculate, axillary, the axes densely malpighio-strigulose, 4.5-5.5 cm long, the bracts ovate, ca 0.9 mm long and 0.6 mm wide, densely strigulose externally, glabrous within, the bracteoles arising from the pedicel-base, lanceolate, ca 0.9 mm long and 1.3 mm wide, pubescent as the bracts; pedicels (immature buds) 2-2.5 mm long, densely strigulose; buds globose, apiculate, black, glabrous, ca 3 mm long and 2 mm wide; mature flowers not seen, the calyx glabrous; petal glabrous, long-clawed, the blade rounded; larger stamens 2; gynoecium glabrous, the style very short.
Species Description - Tree with the branchlets densely rusty-malpighio-strigulose; stipules triangular, ca 0.6 mm long and wide, minutely malpighio-strigulose; petioles 7-10 mm long, terete, minutely malpighio-strigulose, the rachis 3.5-4.5 cm long, slightly canaliculate on the upper surface, densely and minutely malpighio-strigulose; leaflets 2- or 3-jugate, the petiolules 3-5 mm long, minutely malpighio-strigulose, the blades 5-9 cm long, 2-3.5 cm wide, lanceolate or narrowly ovate (basal pair) to narrowly elliptic, the base acute to subobtuse, the apex acuminate, glabrous above, densely rusty-malpighio-strigulose beneath, the costa impressed and the primary veins plane and obscure on the upper surface, the costa and the primaries more or less salient beneath; inflorescence paniculate, axillary, the axes densely malpighio-strigulose, 4.5-5.5 cm long, the bracts ovate, ca 0.9 mm long and 0.6 mm wide, densely strigulose externally, glabrous within, the bracteoles arising from the pedicel-base, lanceolate, ca 0.9 mm long and 1.3 mm wide, pubescent as the bracts; pedicels (immature buds) 2-2.5 mm long, densely strigulose; buds globose, apiculate, black, glabrous, ca 3 mm long and 2 mm wide; mature flowers not seen, the calyx glabrous; petal glabrous, long-clawed, the blade rounded; larger stamens 2; gynoecium glabrous, the style very short.
Discussion:
There is sufficient similarity between this incompletely known species and S. microcarpa to indicate a genetic relationship. The glabrous gynoecium, small flowers, and the opposite leaflets distinguish S. leiocalycina from its relative which has a pubescent gynoecium, much larger flowers and alternate leaflets; both have the same sort of malpighian hairs and leaflets of about the same size and form.
There is sufficient similarity between this incompletely known species and S. microcarpa to indicate a genetic relationship. The glabrous gynoecium, small flowers, and the opposite leaflets distinguish S. leiocalycina from its relative which has a pubescent gynoecium, much larger flowers and alternate leaflets; both have the same sort of malpighian hairs and leaflets of about the same size and form.
Distribution:
Guyana South America|
Guyana South America|
Common Names:
Brown ebony, wamara
Brown ebony, wamara