Monographs Details:
Authority:

Cowan, Richard S. 1967. Swartzia (Leguminosae, Caesalpinioideae Swartzieae). Fl. Neotrop. Monogr. 1: 3-228. (Published by NYBG Press)
Family:

Fabaceae
Description:

Description - Tree, or less frequently a shrub, 3-35 m tall, the branchlets glabrous or minutely strigulose and usually glabrescent; stipules mostly persistent, linear-lanceolate, (0.5-)2.5-6(-10) mm long, 0.2-0.6(-1.5) mm wide, glabrous or minutely strigulose and glabrescent externally, glabrous within; leaves unifoliolate or trifoliolate, the petioles (1.5-)3-10(-35) mm long, marginate, alate, barely stipellate, or completely naked, glabrous or minutely strigulose and glabrescent; rachis when present (5-)10-20(-40) mm long, alate to marginate, pubescent as petiole, the petiolules 0.5-2 mm long, usually minutely strigulose and glabrescent, the blades (3-)6-15(-24) cm long, (1.5-)3-7.5(-9) cm wide (the lateral leaflets, when present, smaller), glabrous, elliptic to oblong-elliptic, the base usually rounded, obtuse to acute, the apex acute to acuminate, the tip often blunt, the costa and primary veins salient on both sides of the blade; inflorescences axillary, (2.5-)4-10(-15) cm long, the axis glabrous or minutely strigulose and usually glabrescent, (6.5-) 11-65(-115) mm long, the bracts caducous to persistent, 0.5-2 mm long, linear, minutely strigulose, the bracteoles caducous to persistent, 0.5-3 mm long, linear-lanceolate, minutely strigulose and glabrescent; pedicels (6-)8-22(-40) mm long, glabrous or minutely strigulose and glabrescent; buds usually globose, sometimes oval in outline, (6-)8-12(-14) mm long, 7-10(-13) mm diameter, usually glabrous but occasionally somewhat minutely strigulose; calyx segments 3-5, glabrous, deciduous; petal yellow, glabrous, the claw (1 -)3-4(-7) mm long, the blade oblate with the base cordate, 18-35 mm long, 20-45 mm wide; larger stamens 5-15, glabrous, the filaments (12-) 14-18(-22) mm long, the anthers 1.5-3 mm long, 1-1.5 mm wide, oblong, the smaller stamens glabrous, the filaments 8-15 mm long, the anthers 1-1.5 mm long, 0.5-1 mm wide, oval; gynoecium glabrous, the stigma capitellate, the style 2-10 mm long, the ovary narrowly arcuate-elliptic, (5-)7-10(-17.5) mm long, 1.5-3 mm wide, the gynophore (4-)6-12(-15) mm long; fruits glabrous, oval to elliptic (1-seeded ones) to oblong-elliptic (2-seeded ones), 2.5-5 cm long, 1-2 cm wide, the stipe (7-)8-12(-17) mm long; seed 15-30 mm long, 8-15 mm wide, elliptic to reniform in outline, black to gray-brown darkly, shining, the aril white, covering 1/3 to 2/3 of seed.

Distribution:

Mexico North America| West Indies| Peru South America| Bolivia South America| Brazil South America|