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Trees, shrubs or herbs of varying habit (sometimes woody climbers), mostly thorny or prickly, with bipinnate often sensitive lvs. (sometimes the lvs. reduced to phyllodia): fls. not papilionaceous, in close heads or head-like spikes, usually with 4 or 5 united petals, and a minute or obsolete calyx; stamens 4-10, exserted; pollen granular: pod flat, oblong or linear, breaking up into 1-seeded joints when ripe. Mimosa has stamens 10 or less (once or twice as many as the petals); Acacia has numerous stamens.—Of Mimosas there are probably 300 species, chiefly of Trop. Amer. A number of the bushy species, and the small trees, are planted more or less in warm countries for ornament. They require the treatment given the woody acacias.
Trees, shrubs or herbs of varying habit (sometimes woody climbers), mostly thorny or prickly, with bipinnate often sensitive lvs. (sometimes the lvs. reduced to phyllodia): fls. not papilionaceous, in close heads or head-like spikes, usually with 4 or 5 united petals, and a minute or obsolete calyx; stamens 4-10, exserted; pollen granular: pod flat, oblong or linear, breaking up into 1-seeded joints when ripe. Mimosa has stamens 10 or less (once or twice as many as the petals); Acacia has numerous stamens.—Of Mimosas there are probably 300 species, chiefly of Trop. Amer. A number of the bushy species, and the small trees, are planted more or less in warm countries for ornament. They require the treatment given the woody acacias.
M. argentea, Hort. Of climbing habit, suitable for warmhouse, said to be of the same section of the genus as M. pudica, slender, the sts. and branches hairy: pinna; 2 or 3 pairs; lfts. about 40, oblong pinkish on the under side (as are the young shoots), green at the tips and silver-gray on lower half. Brazil.
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