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Priva Adans., Fam. 2:505. 1763. Benth. & Hook.f., Gen.P1. 2:1145.1876; Clarke in Hook.f., F1.Brit.Ind.4:565.1885; Cooke, l.c. 501; Moldenke in Fedde, Rep.41: 1-76.1936; Hepper in Dalz & Hutch., F1.W. Trop. Afr. 2:534.1963; Patzak & Rech. f. in Rech. f., Fl. Iran. 43:4.1967; Moldenke in Ann. Miss. Bot. Gard. 60(I):77.1973.
Streptium Roxb.Tortula Roxb. ex Willd.
Erect to decumbent, perennial herbs with opposite to sub-opposite, simple, exstipulate leaves. Inflorescence spicate, terminal or axillary. Flowers small, bracteate, usually white or bluish. Calyx tube 5-ribbed, minutely 4-5-toothed, persistent, enlarged and often ovoid inflated in fruit. Corolla-tube straight to subcurved, about as long or slightly exceeding the calyx; limb 5-lobed, somewhat 2-lipped, oblique; axial lip 2, short lobed, abaxial 3-lobed, larger with the middle lobe largest. Stamens 4, didynamous, ± included, inserted at the middle or a little above the middle of corolla-tube, dithecous with connectives thickened or sagittate; fifth stamen, if present, reduced to a minute staminode. Ovary 2(-4)-loculed with each locule 2 or 1-ovuled; style linear, included. Fruit dry, usually hard schizocarp of 2 cocci separating easily at maturity, suborbicular; seeds exalbuminous.
About 20 species, mostly in tropical and subtropical Asia, Africa and America; only l species recorded from here. Leaves of some species, e.g. Priva lappulacea (L.) Pers. (Priva echinata Juss.), are used as substitute for tea leaves.
Lower Taxon
Related Synonym(s):
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