Family Mimosaceae R Brown in Flinders 1814 nom conserv the Mimosa Family

Physical description: The family Mimo-saceae consists of 40 genera and about 2000 species of trees and shrubs but rarely herbs, which are often prickly. Mimosaceae are known to abound with tannins, mucilages, gums, and an unusual series of amino acids. The leaves of Mimosaceae are bip-innate and stipulate. The flowers are hermaphrodite, small, spicate, racemose or capitate, and actinomorphic. The calyx is tubular, valvate, and 5-lobed. The petals are small, valvate, free or connate, and hypogynous. The stamens are numerous, free or mon-adelphous, and often conspicuous. The anthers are small, 2-celled, open lengthwise, and marked with a deciduous gland at the apex. The gynecium consists of a single carpel forming a superior and single-locular ovary which encloses 2 to several ovaries attached to marginal placentas. The fruits are pods. The seeds are often glossy.

Pharmaceutical interest: Examples of Mimosaceae of economic value are Acacia senegal Willd. (Arabic gum), Entada gigas (L.) Fawc. and Rendle (cacoon), Propsopis juliflora DC. (mesquit tree), Acacia melanoxylon R. Br. (Australian blackwood) and Xylia dolabriformis Benth. (ironwood). It will be interesting to learn whether a more intensive study on Mimosaceae will disclose any molecules of therapeutic interest.

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