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:
Tounatea guianensis Aubl., Swartzia alata Willd.
Tounatea guianensis Aubl., Swartzia alata Willd.
Description:
Description - Tree 6-15 m tall, the trunk 7.5-15 cm diameter, the bark brown, the branchlets strigulose at the tips; stipules deciduous or persistent, linear-lanceolate, (1.5-)3-5.5 mm long, strigulose externally, glabrous within; petioles alate, the wing shorter than the petiole, oblong narrowly to oblanceolate, 3-4 mm wide apically, the petiole 12-22(-42) mm long, strigulose to pilosulose, the rachis 5-8.5(-12.5) cm long, alate, the wing linear-oblong to oblanceolate, 5-9 mm wide apically, pilose above but the wing glabrescent, both the wing and the costa strigulose beneath; leaflets 2-jugate, the petiolules 1-3 mm long, minutely strigulose, the blades elliptic, the base obtuse, sometimes narrowed, the apex shortly and bluntly acuminate, chartaceous to thinly coriaceous, those of the lowermost pair 6.5-12 cm long, 3.5-6 cm wide, the upper pair and the terminal leaflet 11.5-22 cm long, 4-9 cm wide, the costa impressed above, salient beneath, the primary veins plane to somewhat elevated on the upper surface, salient beneath; inflorescences cauligerous, racemose, solitary or in sparsely branched panicles of racemes, 8.5-22 cm long, the axes strigulose, the bracts persistent, 1-2 mm long, 0.7-1 mm wide, triangular to triangular-lanceolate, acute, strigulose externally, glabrous within, the bracteoles lacking; pedicels (4.5-)9 mm long, strigulose; buds oval in outline, ca 7 mm long and 6 mm wide, strigulose; calyx segments 4, strigulose externally, strigose-sericeous within; corolla lacking; larger stamens 2, the filaments ca 4 mm long, sparingly strigose or glabrous, the anthers oblong, ca 3 mm long and 1.5 mm wide, glabrous, the pollen globose, ca 26 n diameter, the smaller ones glabrous, the filaments ca 6 mm long, the anthers orbicular in outline, the pollen globose, ca 23.5 ^ diameter; stigma punctiform; style glabrous, 1 mm long; ovary ca 4 mm long, 2-3 mm wide, oval in outline, sericeous; gynophore 2.5-3 mm long, sericeous; fruit orange-colored, oval in outline, 2.5-3 cm long, 1.5-2 cm diameter, sparingly strigose, the stipe 3-5 mm long, strigose; seeds black, the aril white.
Description - Tree 6-15 m tall, the trunk 7.5-15 cm diameter, the bark brown, the branchlets strigulose at the tips; stipules deciduous or persistent, linear-lanceolate, (1.5-)3-5.5 mm long, strigulose externally, glabrous within; petioles alate, the wing shorter than the petiole, oblong narrowly to oblanceolate, 3-4 mm wide apically, the petiole 12-22(-42) mm long, strigulose to pilosulose, the rachis 5-8.5(-12.5) cm long, alate, the wing linear-oblong to oblanceolate, 5-9 mm wide apically, pilose above but the wing glabrescent, both the wing and the costa strigulose beneath; leaflets 2-jugate, the petiolules 1-3 mm long, minutely strigulose, the blades elliptic, the base obtuse, sometimes narrowed, the apex shortly and bluntly acuminate, chartaceous to thinly coriaceous, those of the lowermost pair 6.5-12 cm long, 3.5-6 cm wide, the upper pair and the terminal leaflet 11.5-22 cm long, 4-9 cm wide, the costa impressed above, salient beneath, the primary veins plane to somewhat elevated on the upper surface, salient beneath; inflorescences cauligerous, racemose, solitary or in sparsely branched panicles of racemes, 8.5-22 cm long, the axes strigulose, the bracts persistent, 1-2 mm long, 0.7-1 mm wide, triangular to triangular-lanceolate, acute, strigulose externally, glabrous within, the bracteoles lacking; pedicels (4.5-)9 mm long, strigulose; buds oval in outline, ca 7 mm long and 6 mm wide, strigulose; calyx segments 4, strigulose externally, strigose-sericeous within; corolla lacking; larger stamens 2, the filaments ca 4 mm long, sparingly strigose or glabrous, the anthers oblong, ca 3 mm long and 1.5 mm wide, glabrous, the pollen globose, ca 26 n diameter, the smaller ones glabrous, the filaments ca 6 mm long, the anthers orbicular in outline, the pollen globose, ca 23.5 ^ diameter; stigma punctiform; style glabrous, 1 mm long; ovary ca 4 mm long, 2-3 mm wide, oval in outline, sericeous; gynophore 2.5-3 mm long, sericeous; fruit orange-colored, oval in outline, 2.5-3 cm long, 1.5-2 cm diameter, sparingly strigose, the stipe 3-5 mm long, strigose; seeds black, the aril white.
Discussion:
Since this is the type species of the genus, it is important that it be interpreted correctly. Sandwith in 1934 discussed the identity of the Guyana material relative to the Aublet collection at the British Museum. There was consequently little question until a collection in the Geneva Herbarium (Leblond 194), which had been identified as this species, was studied. There were enough similarities and differences to suggest that Aublet’s material at the British Museum should be compared with this also. I am indebted to W. T. Stearn for his careful comparison of a leaflet of the Leblond collection and one from Cowan 39384, which represents quite well the second element, with the Aublet sheet. It is on the basis of his comments and what I have been able to deduce otherwise that I have fixed the application of the name S. guianensis. The Leblond collection represents a distinct but related species from which it is readily separable by the glabrous inner surfaces of the calyx.
Since this is the type species of the genus, it is important that it be interpreted correctly. Sandwith in 1934 discussed the identity of the Guyana material relative to the Aublet collection at the British Museum. There was consequently little question until a collection in the Geneva Herbarium (Leblond 194), which had been identified as this species, was studied. There were enough similarities and differences to suggest that Aublet’s material at the British Museum should be compared with this also. I am indebted to W. T. Stearn for his careful comparison of a leaflet of the Leblond collection and one from Cowan 39384, which represents quite well the second element, with the Aublet sheet. It is on the basis of his comments and what I have been able to deduce otherwise that I have fixed the application of the name S. guianensis. The Leblond collection represents a distinct but related species from which it is readily separable by the glabrous inner surfaces of the calyx.
Distribution:
Guyana South America| Suriname South America| French Guiana South America|
Guyana South America| Suriname South America| French Guiana South America|
Common Names:
Banya-type, itikiburoballi, matope
Banya-type, itikiburoballi, matope