Botanical Survey of India | Flora of India

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Herbs or undershrubs. Leaves simple, alternate, serrate; stipules filiform, caducous. Flowers small, in dense axillary or terminal clusters. Sepals 5, connate at base into a campanulate tube. Petals 5, oblong-spathulate, macrescent. Stamens 5, opposite peetals, filaments tubular, connate at base; staminodes absent. Ovary sessile, unilocular, with 2 ascending ovules; styles excentric, fimbriate at apex; stigmas penicillate. Capasules pilose, enclosed in calyx tube, 2-valved, 1-seeded. Seeds smooth, endospermous; embryo straight; cotyledons flat.

Predominantly tropical American, now a few pantropical weeds, ca 54 species; one in India.

Literature. sr. JOHN, H. (1976). Evaluation of Waltheria indica L. and W. americana L. (Sterculiaceae), Pacific Plant Studies - 28. Phytologia 33: 89 - 92.

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