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Najas marina L., it is a hydro annual submerged, aquatic herb, 10-20 cm long, repeatedly and forkedly branched, stems smooth or ± spinose-dentate near the top, rather stiff and brittle levees up to  4.5 x 0.5 cm. strongly spinose-dentate and ± toothed on the back, sheaths  entire, not ciliate. Flowers dioccious, male sapathaceous, with 4-thecous anthers. Female ones naked. Fruit 3-8 mm long, ellipsoid or ovoid.  Life Form: Hy,   Flowering in:——————-,   Vern:—————-,   Phytochoria: Cosm, The native range of this species is Cosmopolitan.  Notes: Wild in Libya.

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Distribution in Libya
Sirte Plains
Reported from Tawrgha by Pampanini and Keith


Bibliographic references:  
First: Encyclopedia Flora of Libyan:  
Jafri, S.M.H. & El-Gadi, A. (1984) Flora of Libya, Najadaceae Vol.  (113) Department of Botany, Al-Faateh Univ., Tripoli, Libya.
Second: Researches and PhD theses, master theses, Sorted by Newest: pdf files