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 acuminata var. platygyne Benth.
Swartzia acuminata var. platygyne Benth.
Description:
Description - Branchlets densely strigulose; stipules persistent, linear-lanceolate, 4-5.5 mm long, glabrous; petioles 18-28 mm long, terete except marginate and minutely stipellate apically, strigulose; rachis 12.5-13 cm long, slightly canaliculate and at the pairs of leaflets minutely stipellate, strigulose; leaflets 3- or 4-jugate, the petiolules ca 3 mm long, strigulose, the blades 7-11.5 cm long, 3-4 cm wide, elliptic to elliptic-oblong, the base acute, the apex acuminate with a mucro 0.3-0.4 mm long, the blade glabrous on the upper surface, strigulose beneath on the costa at the base, the venation subobscure above, prominulous on the lower surface, the costa impressed above, salient beneath, the primary veins plane; inflorescences axillary, 4-8-flowered, the peduncle to ca 13 mm long, sparingly strigulose, the rachis to 35 mm long, sparingly strigulose, the bracts persistent, ca 1.5 mm long, arcuate-oblanceolate, strigulose, the bracteoles persistent, ca 2 mm long, linear-lanceolate, sparingly strigulose externally, glabrous within; pedicels 11-14 mm long, glabrous; buds glabrous; calyx segments 5, elliptic, glabrous, persistent with young fruits; petal and stamens not seen; gynoecium (in old flower) glabrous, the stigma truncate, the style shorter than the oval ovary, the gynophore as long as or longer than the ovary; fruit not seen.
Description - Branchlets densely strigulose; stipules persistent, linear-lanceolate, 4-5.5 mm long, glabrous; petioles 18-28 mm long, terete except marginate and minutely stipellate apically, strigulose; rachis 12.5-13 cm long, slightly canaliculate and at the pairs of leaflets minutely stipellate, strigulose; leaflets 3- or 4-jugate, the petiolules ca 3 mm long, strigulose, the blades 7-11.5 cm long, 3-4 cm wide, elliptic to elliptic-oblong, the base acute, the apex acuminate with a mucro 0.3-0.4 mm long, the blade glabrous on the upper surface, strigulose beneath on the costa at the base, the venation subobscure above, prominulous on the lower surface, the costa impressed above, salient beneath, the primary veins plane; inflorescences axillary, 4-8-flowered, the peduncle to ca 13 mm long, sparingly strigulose, the rachis to 35 mm long, sparingly strigulose, the bracts persistent, ca 1.5 mm long, arcuate-oblanceolate, strigulose, the bracteoles persistent, ca 2 mm long, linear-lanceolate, sparingly strigulose externally, glabrous within; pedicels 11-14 mm long, glabrous; buds glabrous; calyx segments 5, elliptic, glabrous, persistent with young fruits; petal and stamens not seen; gynoecium (in old flower) glabrous, the stigma truncate, the style shorter than the oval ovary, the gynophore as long as or longer than the ovary; fruit not seen.
Discussion:
What was perhaps Bentham’s only serious error in his treatment of the genus was his placement of this taxon as a variety of the species then known as S. acuminata, to which it is not even distantly related. It is perhaps most nearly related to S. aptera and the S. brachyrachis complex, but differs from all these in its 3- or 4-jugate leaflets; it may be regarded as the least advanced of this line.Ducke’s S. platygyne is not based on Bentham’s variety, but rather is a synonym of S. polyphylla, which is in the other section of the genus.
What was perhaps Bentham’s only serious error in his treatment of the genus was his placement of this taxon as a variety of the species then known as S. acuminata, to which it is not even distantly related. It is perhaps most nearly related to S. aptera and the S. brachyrachis complex, but differs from all these in its 3- or 4-jugate leaflets; it may be regarded as the least advanced of this line.Ducke’s S. platygyne is not based on Bentham’s variety, but rather is a synonym of S. polyphylla, which is in the other section of the genus.
Distribution:
Colombia South America| Amazonas Colombia South America|
Colombia South America| Amazonas Colombia South America|