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:
Description - Tree, the young branchlets densely microscopically rusty-puberulous, the hairs peltate, the stalk ca 4 cells long, the cap funnelform, the overall length ca 0.0880.154 mm, the disc ca 0.066-0.110 mm diameter; stipules ca 1 mm long, triangular, densely puberulous microscopically; petioles 5-7 cm long, terete, estipellate, densely micro-puberulous, the hairs peltate; rachis 11-26 cm long, terete, estipellate, densely micro-puberulous; leaflets 3-jugate, the petiolules 7-10 mm long, densely micro-puberulous, the hairs peltate, the blades of the lowermost pair smaller, 9.5-13.5 cm long, 5.5-8 cm wide, the other pairs with blades 14-26 cm long, 6.5-11 cm wide, all the blades oblong-oval to elliptic-oblong, the base rounded and cordate, the apex rounded-obtuse to rounded and abruptly short-acute, glabrous on the upper surface, densely micro-puberulous beneath, the hairs peltate, the costa impressed and the primary veins slightly salient, both more or less salient beneath; inflorescence panicled-racemose, 11-22 cm long, ramuligerous, the axes rusty micro-puberulous, the hairs peltate, the bracts deciduous, broadly triangular, 1.5-2 mm long, 2.5-3 mm wide, acute, micro-puberulous externally, the bracetoles persistent, arising at or near the apex of the pedicel, ca 2 mm long and 0.7 mm wide, narrowly oblong, acute, densely micro-puberulous, the pedicels 5-7 mm long, micro-puberulous densely; buds 9-10 mm diameter, globose to subglobose, densely micro-puberulous; calyx segments thick, coriaceous, glabrous within; petal glabrous, the claw 6.5-8 mm long, the blade rounded the base cordate, 24-30 mm diameter; larger stamens 4, glabrous, the filaments 18.5 mm long, the anthers oblong, 2 mm long; smaller stamens glabrous, the filaments ca 10 mm long, the anthers broadly oblong, ca 1 mm long; gynoecium glabrous, the stigma obtuse, the style 6-7.5 mm long, the ovary 5-6 mm long, 2 mm wide, elliptic, the gynophore 7-10 mm long; fruit not seen.
Description - Tree, the young branchlets densely microscopically rusty-puberulous, the hairs peltate, the stalk ca 4 cells long, the cap funnelform, the overall length ca 0.0880.154 mm, the disc ca 0.066-0.110 mm diameter; stipules ca 1 mm long, triangular, densely puberulous microscopically; petioles 5-7 cm long, terete, estipellate, densely micro-puberulous, the hairs peltate; rachis 11-26 cm long, terete, estipellate, densely micro-puberulous; leaflets 3-jugate, the petiolules 7-10 mm long, densely micro-puberulous, the hairs peltate, the blades of the lowermost pair smaller, 9.5-13.5 cm long, 5.5-8 cm wide, the other pairs with blades 14-26 cm long, 6.5-11 cm wide, all the blades oblong-oval to elliptic-oblong, the base rounded and cordate, the apex rounded-obtuse to rounded and abruptly short-acute, glabrous on the upper surface, densely micro-puberulous beneath, the hairs peltate, the costa impressed and the primary veins slightly salient, both more or less salient beneath; inflorescence panicled-racemose, 11-22 cm long, ramuligerous, the axes rusty micro-puberulous, the hairs peltate, the bracts deciduous, broadly triangular, 1.5-2 mm long, 2.5-3 mm wide, acute, micro-puberulous externally, the bracetoles persistent, arising at or near the apex of the pedicel, ca 2 mm long and 0.7 mm wide, narrowly oblong, acute, densely micro-puberulous, the pedicels 5-7 mm long, micro-puberulous densely; buds 9-10 mm diameter, globose to subglobose, densely micro-puberulous; calyx segments thick, coriaceous, glabrous within; petal glabrous, the claw 6.5-8 mm long, the blade rounded the base cordate, 24-30 mm diameter; larger stamens 4, glabrous, the filaments 18.5 mm long, the anthers oblong, 2 mm long; smaller stamens glabrous, the filaments ca 10 mm long, the anthers broadly oblong, ca 1 mm long; gynoecium glabrous, the stigma obtuse, the style 6-7.5 mm long, the ovary 5-6 mm long, 2 mm wide, elliptic, the gynophore 7-10 mm long; fruit not seen.
Discussion:
The relationship from macroscopic morphology is to the S. schomburgkii complex and particularly to S. gigantea; the microscopic details of the peculiar peltate hairs in this assemblage reinforce this conclusion. The peltate hairs of S. duckei are about twice the size of those in S. schomburgkii. The leaflets are larger and differently shaped in S. gigantea and its style is shorter relative to the length of the ovary.
The relationship from macroscopic morphology is to the S. schomburgkii complex and particularly to S. gigantea; the microscopic details of the peculiar peltate hairs in this assemblage reinforce this conclusion. The peltate hairs of S. duckei are about twice the size of those in S. schomburgkii. The leaflets are larger and differently shaped in S. gigantea and its style is shorter relative to the length of the ovary.
Distribution:
Brazil South America| Pará Brazil South America|
Brazil South America| Pará Brazil South America|
Common Names:
Urucurana, paracutaca
Urucurana, paracutaca