130. NAIADACE^. [5. Naias. 



marginal teeth 10-17 each side. Leaf -sheath with rounded auricles 

 or subtruncate or broadly orbicular, minutely toothed. Flowers 

 monoecious, both .sexes sun'ounded by a spathe with a long neck and 

 irregularly toothed mouth, •16--2" long. Seed ellipsoid 2 mm. long, 

 with numerous minute 4-6-gonal areoles in 25-30 longitudinal rows. 



Shahabad (moat, Shahganj) J.D.H. ! 



Typical specimens from Favidpur and Jessore have the teeth evident ; the 

 leaves in the Behar i:)lant are very narrow and the teeth sometimes obscure. The- 

 teeth are always verj' fine as compared with the next species. 



3. N. minor, AUione. Syn. Caulinia fragilis, Willd. ; N. dichotoma, 



Roxb. 

 A more graceful plant than N. indica, the leafy branches closer and 

 more tufted, much 2-chotomously branched. Leaves recurved, very 

 narrowly linear and attenuate to tip, -4—8" long with the 6-10 teeth 

 each side spreading from a broad base and with a finely spinulose tip. 

 The .sheathing stipular bases of the leaves are prominent in this species 

 with rounded often denticulate shoulders or truncate. Seed 2-3 mm. 

 long, obliquely linear-oblong, scarcely areolate but sculptured with 

 12-18 longitudinal scalariform bands. 



Western Beno-al, Kurzl Sikkim Tarai, Kurz I Chilka Lake, Annandnlel 

 Fl. March. Probably occurs throughout the province. 

 Male flowers only with a spathe. Anthers 1-celled. 



4. N. Kurziana, Rendle. 



A small species with very graceful stem a.nd slender leaves about 

 15 mm. (-6") long with very numerous close minute teeth. Sheath 

 shortly auricled. Male flower only with spathe. Anther 1-celled. 

 Seed ellipsoid-oblong conspicuously areolate, areoles quadrate in 

 about 16 series. 

 Purneah, Kurz ! Fl. Sept. 



5. N. foveolata, A. Br. 



Stems branched and sj)reading with linear leaves narrowed and 

 setaceous above •7-1-5" long with 6-20 small subtriangular o})lique 

 and very sharp teeth each side. Sheath shortly auricled or with 

 minutely toothed shoulders rather than auricles. Male flower only 

 with spathe, anther 4-locellate. Seed 2 -25-2 -5 mm. long, areoles 

 distinct in about 20 longitudinal rows, the centre ones subquadrate. 

 Tanks and streams, abundant. Bengal, Ears ! Bihar, J.B.S. ! Fl. Feb. 



6. N. graminea, Del. 



A short grass-like, often gracefully plumose aquatic. Stems up 

 to 2 ft. with densely foliose branchlets. Leaves narrowl}'- linear •7-1''' 

 long with numerous (30-50) minute oblique spinules each side. Sheath 

 long-auricled very conspicuous, auricles lanceolate denticulate. 

 Flowers of both sexes naked. Seed narrowly oblong to ellipsoid- 

 oblong 1 •75-2-25 mm. long. Areoles subquadrate or polyhedral, 

 small, irregularly disposed or in more or less distinct longitudinal 

 lines. 



A vei'y common and widely distributed plant. Ranchi, MoJcim ! Fl. Sept. -Oct. 



55 851 



