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 - Habit of M. claussenii var. prorsiseta, but the lf-stk charged between each pinna-pair with a pronounced spicule and the pinnae relatively few; leaf-formula (vii-)viii-xi/32-50, the distal pair of pinnae (4.5-)5-10 cm, the longer lfts 7-8 x 2-2.4 mm; peduncles 5.5-6.5 cm; pods in profile 30-50 x 13-14 mm, the valves and replum densely hispid with erect, then forwardly curved rusty-golden setae to ±4 mm and a thin undercoat of minute villi and gland-tipped setulae.
This plant was found on a creek bank at 1200 m, fruiting in October. The specimens have fruiting peduncles subtended by leaves which may be hysteranthous and shorter than those below the inflorescence. The locality is in the range of M. longepedunculata, in which interpinnal spicules are frequent, but this is reported as a depressed subshrub not over 1 m tall, whereas Irwin 9397 is described by the collector as a few-branched shrub three meters in height. Field observation is needed to establish the status and affinity of this puzzling plant.