Mimosa asperata L.

Nile Valley North of Nubia, Nubia, Arabian Desert.

Tropical Africa and America.

Canal and Nile Banks, Moist Ground.

Perennial.

Height: 0.5-2.5 m.

Mimosa berlandieri A. Gray; Torrey, Mex. Bound. Surv 61: 1859.
Mimosa asperata Berlandieri B. L. Robinson, Proc. Am. Acad. 33: 331. 1898.
A low shrub, the branches puberulent, little, if at all, setose, bearing a few prickles or
unarmed. Rachis of leaf with or without prickles; pinnae 4-6 pairs; leaflets many pairs,
linear, pubescent or glabrate, 4-6 mm. long; peduncles slender, setose, 2-4 cm. long; flowers
capitate, 4-parted; stamens 8; legume narrowly oblong, 4-5 cm. long, 8-10 mm. wide, sparingly
short-setose, 10-20-jointed.
Type locality: Near Matamoras. TamaiiHpas.
Distribution: Southern Texas to Tamaulipas, San Luis Potosi and Tepic; Nicaragua.

Perennial, Shrubs, Woody throughout, Stems woody below, or from woo dy crown or caudex, Taproot present, Nodules present, Stems erect or ascending, Stems or branches arching, spreading or decumbent, Stems 1-2 m tall, Stems greater than 2 m tall, Trunk or stems armed with thorns, spines or prickles, Stems solid, Stems or young twigs sparsely to densely hairy, Stems with hooked uncinate hairs or prickles, Leaves alternate, Leaves petiolate, Stipules conspicuous, Stipules setiform, subulate or acicular, Stipules persistent, Stipules free, Leaves compound, Leaves bipinnate, Leaf or leaflet margins entire, Leaflets opposite, Leaflets 10-many, Leaves glabrous or nearly so, Flowers solitary in axils, or appearing solitary, Inflorescences racemes, Inflorescences globose heads, capitate or subcapitate, Inflorescence axillary, Inflorescence terminal, Flowers actinomorphic or somewhat irregular, Calyx 5-lobed, Calyx glabrous, Petals united, valvate, Petals white, Imperfect flowers present, dioecious or polygamodioecious, Stamens 9-10, Stamens complete ly free, separate, Stamens long exserted, Filaments glabrous, Filaments pink or red, Style terete, Fruit a legume, Fruit a loment, jointed, separating into articles, Fruit unilocular, Fruit freely dehiscent, Fruit elongate, straight, Fruit oblong or ellipsoidal, Fruit exserted from calyx, Fruit spiny, bur-like, with hooked bristles or prickles, Fruit hairy, Fruit 3-10 seeded, Seed with elliptical line or depression, pleurogram, Seeds subquadrate, Seed surface smooth, Seeds olive, brown, or black.

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