Swartzia martii Eichler ex Benth.
-
Authority
Cowan, Richard S. 1967. Swartzia (Leguminosae, Caesalpinioideae Swartzieae). Fl. Neotrop. Monogr. 1: 3-228. (Published by NYBG Press)
-
Family
Fabaceae
-
Scientific Name
-
Type
Type collection. K. F. P. von Martius s. n. (holotype M), Rio Japurá, Amazonas, Brazil.
-
Description
Description - Tree 5-8 m tall, the trunk ca 20 cm diameter, the branchlets strigose but glabrescent; stipules persistent, 2-4.5 mm long, linear-lanceolate, acute, strigose at first but soon glabrescent; leaves unifoliolate, the petioles 6-11 mm long, strigose, apically stipellate, the stipels to 1.5 mm long, the petiolules 3-6 mm long, strigose, the blades glabrous, elliptic to oblong-elliptic, 14-23.5 cm long, 6.5-9.5 cm wide, the base rounded, obtuse to subobtuse or acute, the apex acuminate to long-acuminate, the venation prominulus to prominent, the costa slightly impressed and the primary veins plane or slightly salient on the upper surface, both the costa and the primaries salient beneath; inflorescences axillary, the axes strigose to strigose-velutinous, 4.5-11.5 cm long, the bracts persistent, 2-2.5 mm long, oblong, densely strigose externally, glabrous within, the bracteoles persistent, 3-3.5 mm long, linear-lanceolate, densely strigose externally, glabrous within; pedicels 12-21 mm long, densely strigose; buds globose, umbonate, 11-12 mm diameter; calyx segments 4, persistent with the fruit, densely strigose externally, villose within but glabrescent; petal glabrous, the blade rounded or oblate, ca 15 mm long, 15-20 mm wide; larger stamens 3-5, glabrous, the filaments ca 15 mm long, the pollen of all the stamens globose, 34-36.5 µ diameter, the smaller stamens glabrous, the filaments ca 5 mm long, the anthers oblong, ca 2 mm long; stigma punctiform; style 5-10 mm long, arcuate, sericeous basally; ovary 7-9 mm long, 3.5-4.5 mm wide, rusty-strigose-sericeous, the gynophore 14-18 mm long, sericeous at the junction with the ovary but otherwise glabrous; fruit ca 33 mm long and 22 mm wide, elliptic in outline and cross section, glabrous except strigose at the base and on the abaxial suture, the stipe 20-22 mm long, glabrous except at the strigose apex; seeds 1 per fruit.
-
Discussion
The uniformly strigose-sericeous ovary and larger leaflets at once separate this species from its nearest relatives, S. maguirei and S. fimbriata, both of which have the lateral surfaces of the ovary devoid of vestiture. Both also have proportionately smaller leaflets of rather different form, and the petal of S. maguirei is sericeous externally.
-
Common Names
Jacaranda
-
Distribution
(Fig. 44). Lowland forest along the rivers at the upper parts of the Amazon Basin in Brazil.
Brazil South America| Amazonas Brazil South America|