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Pakistan | Family List | Lemnaceae | Lemna

1. Lemna trisulca L., Sp. Pl. 970. 1753. Boiss., Fl. Or. 5: 29. 1884; Hook. f., Fl. Brit. Ind. 6: 557. 1894; Stewart in Nasir & Ali, Ann. Cat. Vasc. Pl. W. Pak. Kashm. 36. 1972; Riedl, l.c. 6; Landolt, l.c. 17; Uotila, l.c.


Fronds floating and submerged, translucent, acute and serrulate at apex, oblong to ovate, 5-15 x 2-4 mm, margin ± toothed in upper portion and entire at the base, 3-veined; fertile fronds free floating on surface, smaller than the sterile submerged fronds. Daughter fronds budding in a pouch situated in lower portion, each remaining attached by a stipe for a long time and thus forming branched chain like structures. Root sometimes absent. Pistillate flower with one ovule.

Syntypes: Described from Europe, Hb. Linn. 1093/1 (LINN); Hort. cliff. 477 (BM).

Distribution: Europe, Asia, N & E Africa Australia and N. America.


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