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Spec. Char. M. foliis simplicibus ellipticis obliquis utrinque margineque scabris, ramulis hispido-pubescentibus, capitulis solitariis.
Leaves simple, elliptical, oblique, rough on each side and at the margin. Young branches clothed with short harsh down. Heads of flowers solitary.
A more extraordinary Mimosa that even the preceding. We know no other species that has so much asperity about it; certainly every other simple-leaved one yet discovered is perfectly smooth. It has not appeared in the gardens, nor were any specimens sent till last year.
It seems to form a thick rigid bush, the branches numerous, alternate, spreading, round, very rough with a short, dense, rigid pubescence, especially when young. Leaves alternate, apparently vertical, sessile, elliptical, oblique, pointed, entire, extremely harsh with minute,