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Najas L., Sp. Pl. 1015. 1753. Gen. Pl. ed. 5: 445. 1754; Boiss., Fl. Or. 5: 27. 1882; Hook. f., Fl. Brit. Ind. 6: 568. 1894; de Wilde in van Steenis, Fl. Mal. 61: 157; 1962; Dandy in Rech. f., Fl. Iran. 86: 1. 1971; in Hara et al., Enum. Fl. Pl. Nep. 1: 95. 1978.
RIZWAN Y. HASHMI & SAOOD OMER
Caulinia Willd.Fluvialis Mich. ex Adans.Ittnera C.C. Gmel.
Characters same as that of the family.
Represented in Pakistan by 4 species from plains to mountains up to ± 3100 m in brackish and fresh waters.
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| 1 |
Plants dioecious. Stem and back of the midrib provided with spines. Leaves up to 6 mm broad. Seeds pale yellow-brownish, areoles irregular in shape |
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1 Najas marina |
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Plants monoecious. Stem and back of the midrib without spines. Leaves up to 1.5 mm broad. Seeds and areoles not as above |
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(2) |
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| 2 (1) |
Sheath prolonged with narrowly triangular auricles. Male flowers without spathe; seeds greenish brown; areole quadrangular, rectangular-hexagonal |
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2 Najas graminea |
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Sheath with short rounded-truncate auricles. Male flowers enclosed in spathe; seeds purplish, areoles ladder-like |
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(3) |
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| 3 (2) |
Anther 1-thecous |
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3 Najas minor |
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Anther 4-thecous |
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4 Najas oguraensis |
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Lower Taxa
Related Synonym(s):
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Treatments in Other Floras @ www.efloras.org
Other Databases
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