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 6-18 m tall, the trunk sulcate, all parts of the plant glabrous and often nitid; stipules caducous, not seen; petioles 7-9 cm long, terete, the rachis terete, 11.5-25 cm long; leaflets 2- or 3-jugate, glabrous and nitid, the petiolules 7-13 mm long, transversely wrinkled, incrassate, canaliculate, the blades coriaceous, the base rounded-obtuse, the apex abruptly acute to acuminate, the blades of the basal pair of leaflets rounded or broadly ovate, 10.5-17 cm long, 7.5-11 cm wide, the other blades oval to broadly ovate-oval, 14-28 cm long, 9-14 cm wide, the venation conspicuously salient on both upper and lower surfaces; inflorescences ramuligerous, glabrous, racemose, 9-15 cm long, the bracts triangular, acute, 0.5-1 mm long and wide, the bracteoles arising about midway or higher on the pedicels, ca 0.5 mm long and wide, triangular; pedicels 8-12 mm long; buds globose or oval in outline, 10-11 mm long, 9-10 mm diameter, glabrous, verruculose; calyx segments coriaceous, glabrous; petal violet-colored or white [fide Ducke], the blade broadly ovate to almost circular, 17-20 mm long, 14-20 mm wide; larger stamens 5 or 6, glabrous, the filaments strongly incrassate, 10-12 mm long, the anthers 2.5-4 mm long, the smaller stamens ca 10 mm long, glabrous; gynoecium glabrous, the stigma punctiform, the style 1.5-3 mm long, the ovary arcuate, narrowly elliptic, 5.5-10 mm long and 1.5-2 mm wide; fruit not seen.
Description - Tree 6-18 m tall, the trunk sulcate, all parts of the plant glabrous and often nitid; stipules caducous, not seen; petioles 7-9 cm long, terete, the rachis terete, 11.5-25 cm long; leaflets 2- or 3-jugate, glabrous and nitid, the petiolules 7-13 mm long, transversely wrinkled, incrassate, canaliculate, the blades coriaceous, the base rounded-obtuse, the apex abruptly acute to acuminate, the blades of the basal pair of leaflets rounded or broadly ovate, 10.5-17 cm long, 7.5-11 cm wide, the other blades oval to broadly ovate-oval, 14-28 cm long, 9-14 cm wide, the venation conspicuously salient on both upper and lower surfaces; inflorescences ramuligerous, glabrous, racemose, 9-15 cm long, the bracts triangular, acute, 0.5-1 mm long and wide, the bracteoles arising about midway or higher on the pedicels, ca 0.5 mm long and wide, triangular; pedicels 8-12 mm long; buds globose or oval in outline, 10-11 mm long, 9-10 mm diameter, glabrous, verruculose; calyx segments coriaceous, glabrous; petal violet-colored or white [fide Ducke], the blade broadly ovate to almost circular, 17-20 mm long, 14-20 mm wide; larger stamens 5 or 6, glabrous, the filaments strongly incrassate, 10-12 mm long, the anthers 2.5-4 mm long, the smaller stamens ca 10 mm long, glabrous; gynoecium glabrous, the stigma punctiform, the style 1.5-3 mm long, the ovary arcuate, narrowly elliptic, 5.5-10 mm long and 1.5-2 mm wide; fruit not seen.
Discussion:
Although this species is grouped in the key with the S. recurva assemblage of species on account of the style-ovary proportions, there is considerably greater affinity with the S. polyphylla complex. Its large, coarsely reticulate, nitid leaves, glabrous inflorescence and flowers separate it from any conceivably related species. There are very few flowers available for comparison but the closest relatives are perhaps S. polyphylla and S. gigantea.
Although this species is grouped in the key with the S. recurva assemblage of species on account of the style-ovary proportions, there is considerably greater affinity with the S. polyphylla complex. Its large, coarsely reticulate, nitid leaves, glabrous inflorescence and flowers separate it from any conceivably related species. There are very few flowers available for comparison but the closest relatives are perhaps S. polyphylla and S. gigantea.
Distribution:
Brazil South America| Suriname South America| Amazonas Brazil South America|
Brazil South America| Suriname South America| Amazonas Brazil South America|
Common Names:
Araba, araba preto
Araba, araba preto