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3. Ludwigia Linn., Sp. Pl. 118. 1753; Gen. Pl. 55. 1754; Boiss., Fl. Or. 2: 751. 1872 ; Baillon, Hist. Pl. 6: 463. 1877; Clarke in Hook. f., Fl. Brit. Ind. 2: 588 1879; Shteinberg in Schischk. & Bobrov, Fl. URSS. 15: 567. 1949; Raven, Reinwardtia 6: 330. 1963; Raven in Rech. f., Fl. Iran. 7: 2. 1964; Raven in Tutin et al., Fl. Eur. 2: 308. 1968; Chamberlain & Raven in Davis, Fl. Turkey 4: 182. 1972; Stewart, Ann. Cat. Vasc. Pl. W. Pak. & Kashm. 508. 1972; Raven in Fl. Taiwan 891.1977.
Peter C. Hoch and Peter H. Raven
Isnardia Linn., Sp. Pl. 120. 1753. Jussiaea Linn., Sp. Pl. 388. 1753; Brenan, Kew Bull. 8: 163. 1953.
Erect perennial or annual herbs or shrubs of wet places. Leaves alternate or opposite, mostly entire. Flowers actinomorphic, borne singly or clustered, often axillary or arranged in inflorescence, epigynous without a hypanthium. Sepals 3-7, persistent in fruit. Petals as many as sepals and conspicuous, or absent, entire, yellow or white. Stamens as many or twice as many as sepals. Stigma entire, capitate. Ovary 4-5-locular. Fruit an obovoid to shortly cylindrical capsule, irregularly dehiscing. Seeds numerous, small, rounded or elongate, free or embedded in woody endocarp.
A genus of some 80 species, with pantropical to subtemperate distribution, the largest groups of species in North and South America, and smaller but distinctive groups in the Old World. Plants of wet open places. Only one species in Pakistan.
Lower Taxon
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