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 - Resembling M. foliolosa var. foederalis in appressed setose pubescence and number of pinnae, but leaflets of longer pinnae more numerous, capitula moriform prior to anthesis, and pod densely setose overall, not merely strigose; lf-formula v-viii/27-35, the longer lf-stks 3-8 cm, randomly spiculate between pinna-pairs, the rachis of longer pinnae 3.5-5.5 cm, the longer lfts (4-)5-7x 1.2-1.5 mm; peduncles 2-3 cm; capitula without filaments ±9 mm diam.; corolla only ±4 mm.
This plant, which I am unable to refer to any of the several Pachycarpae found within a few kilometers radius of Alto Paraíso, was found in cerrado on a hillside at 1350 m, flowering in March. It seems to belong to the M. foliolosa complex, but has random interpinnal spicules on the leaf-stalk, not seen elsewhere in this group. The moriform capitula suggest M. foliolosa var. paranani, but the pinnae are much fewer. More material is required to demonstrate its affinity and status.