Monographs Details: Mimosa
Authors:Rupert C. Barneby
Authority: Barneby, Rupert C. 1991. Sensitivae Censitae. A description of the genus Mimosa Linnaeus (Mimosaceae) in the New World. Mem. New York Bot. Gard. 65: 1-835.
Description:Species Description - Erect from xylopodium ±7 dm, the slender stem and lf-stks strigose with subappressed-ascending setae ±1-2 mm, the small thick lustrous lfts glabrous facially, minutely ciliolate, the capitula (fr) axillary to 2-3 distal lvs; stipules 3-6 x 0.6-1 mm; lf-formula xii-xv/14-16, the espiculate lf-stk 6-8.5 cm, the rachis of longer pinnae 15-18 mm, the oblong-elliptic lfts to 2 x 0.8 mm, coarsely 3-nerved beneath; peduncles ±2.5 cm; flowers not seen; pod 35-40 x 9-10 mm, the replum ±1.3 mm wide, the valves falling entire from replum, externally minutely villosulous and strigose with spaced, comma-shaped, narrowly ascending setae to ± 1 mm, eglandular; seeds 8-11.
The foregoing description is taken from a single stem collected at end of the dry season. The plants, said to be locally common, grew with M. accedens, similar in proportionately long leafstalks and short pinnae, but very different in long-setose stems and in stipitate, lustrous-vemicose and viscid-setulose craspedia. The pod is almost that of M. foliolosa var. foederalis, but the abbreviated pinnae and tiny leaflets seem to stand outside the known range of variation in this variety. Matching specimens in flower are needed.