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
Synonyms:
Swartzia melanocardia Ducke
Swartzia melanocardia Ducke
Description:
Description - Tree with puberulous-strigulose branchlets; stipules deciduous to persistent, (4.5-)7-15 mm long, (2.5-)5 mm wide, falcate-lanceolate or ovate, acute, puberulous to strigulose externally; petioles canaliculate, 3.5-5 cm long, stipellate apically, densely puberulous, the rachis marginate to narrowly alate, the wings erect, stipellate at each pair of leaflets, 7-7.5 cm long, densely puberulous; leaflets 2-4-jugate, the petiolules 1-2 mm long, puberulous, the blades extending beyond the petiolule base, obovate, oblanceolate, or narrowly elliptic, 7-18 cm long, 2-5(-7) cm wide, the base obtuse or narrowed and finally obtuse, the apex acute to acuminate, often mucronulate, glabrous above, sparingly strigose or pilose and usually glaucous beneath, the venation prominulous, the costa and primary veins more or less impressed to plane on the upper surface, salient beneath; inflorescence cauligerous, racemose, 10-24 cm long, the axis minutely strigulose, the bracts persistent, 1-1.5 mm long, 0.7-0.9 mm wide, acute, triangular-ovate, minutely strigulose externally, the bracteoles lacking; pedicels 15-21 mm long, flattened laterally, minutely strigulose; buds oval in outline, infrequently globose, 7-12 mm long, 7-8 mm diameter, minutely strigulose; calyx segments 4 (or 5), persistent, glabrous on the inner surface, minutely strigulose externally; petal white, glabrous, the claw 2-4 mm long, the blade rounded, 13-15 mm diameter; larger stamens 4, the filaments glabrous to sparingly strigose, 16-20 mm long, the anthers oblong-lanceolate narrowly, apiculate, 5.5-7 mm long, 1-1.5 mm wide, glabrous, the smaller stamens glabrous, the filaments (8-) 12-13 mm long, united for about half their length, the anthers lanceolate, apiculate, 2.5 mm long, 0.7 mm wide; gynoecium sericeous, the stigma truncate-obtuse, the style ca 2-5 mm long, the ovary arcuate-linear, (8-) 13-15 mm long, 1-1.5 mm wide, the gynophore 4.5-5 mm long; fruit moniliform to 33 cm long, minutely strigulose, 1-10-seeded; seeds ca 25 mm long and 13 mm wide, the funiculus 25 mm long.
Description - Tree with puberulous-strigulose branchlets; stipules deciduous to persistent, (4.5-)7-15 mm long, (2.5-)5 mm wide, falcate-lanceolate or ovate, acute, puberulous to strigulose externally; petioles canaliculate, 3.5-5 cm long, stipellate apically, densely puberulous, the rachis marginate to narrowly alate, the wings erect, stipellate at each pair of leaflets, 7-7.5 cm long, densely puberulous; leaflets 2-4-jugate, the petiolules 1-2 mm long, puberulous, the blades extending beyond the petiolule base, obovate, oblanceolate, or narrowly elliptic, 7-18 cm long, 2-5(-7) cm wide, the base obtuse or narrowed and finally obtuse, the apex acute to acuminate, often mucronulate, glabrous above, sparingly strigose or pilose and usually glaucous beneath, the venation prominulous, the costa and primary veins more or less impressed to plane on the upper surface, salient beneath; inflorescence cauligerous, racemose, 10-24 cm long, the axis minutely strigulose, the bracts persistent, 1-1.5 mm long, 0.7-0.9 mm wide, acute, triangular-ovate, minutely strigulose externally, the bracteoles lacking; pedicels 15-21 mm long, flattened laterally, minutely strigulose; buds oval in outline, infrequently globose, 7-12 mm long, 7-8 mm diameter, minutely strigulose; calyx segments 4 (or 5), persistent, glabrous on the inner surface, minutely strigulose externally; petal white, glabrous, the claw 2-4 mm long, the blade rounded, 13-15 mm diameter; larger stamens 4, the filaments glabrous to sparingly strigose, 16-20 mm long, the anthers oblong-lanceolate narrowly, apiculate, 5.5-7 mm long, 1-1.5 mm wide, glabrous, the smaller stamens glabrous, the filaments (8-) 12-13 mm long, united for about half their length, the anthers lanceolate, apiculate, 2.5 mm long, 0.7 mm wide; gynoecium sericeous, the stigma truncate-obtuse, the style ca 2-5 mm long, the ovary arcuate-linear, (8-) 13-15 mm long, 1-1.5 mm wide, the gynophore 4.5-5 mm long; fruit moniliform to 33 cm long, minutely strigulose, 1-10-seeded; seeds ca 25 mm long and 13 mm wide, the funiculus 25 mm long.
Discussion:
Both Huber and Ducke related their new species to the proper complex. It was unfortunate that Ducke did not compare his type with the Huber material at the Museo Goeldi, for there are no significant differences to separate them.Swartzia obscura differs from the nearly related species, S. cardiosperma, by the shape of the leaflets which have the primary venation impressed on the upper surface, and the lower surface usually glaucous and somewhat strigose or pilose.
Both Huber and Ducke related their new species to the proper complex. It was unfortunate that Ducke did not compare his type with the Huber material at the Museo Goeldi, for there are no significant differences to separate them.Swartzia obscura differs from the nearly related species, S. cardiosperma, by the shape of the leaflets which have the primary venation impressed on the upper surface, and the lower surface usually glaucous and somewhat strigose or pilose.
Distribution:
Brazil South America| Pará Brazil South America| Amazonas Brazil South America|
Brazil South America| Pará Brazil South America| Amazonas Brazil South America|