176 H JDEOCHAEITACEM. [ BLYXA. 



2, B. oryzetorum, Hook. f. in F. B. I. V, 661 ; Prain Bcng. 

 PL 997. Diplosiphon oryzetorum, Dene, in Jacquem. Voy. Bot. 

 167, t. 167. 



A submerged tufted annual. Leaves 4-6 in. long, with serrulate edges. 



Scape very short. Flowers 2 sexual. Stamens 3. Capsule 1-1 1 in. 



long by J in. wide. Seeds ^ in., sparsely tubercled ; tails none or 



very short. 

 Bundelkhand (Edgeworth, No. 9002). DISTRIB. : Kashmir (Jacque- 



mont), also on the Khasia Mountains. 



5. HYDROCHARIS, Linn. ; Fl. Brit. Ind. v, 662. 



Aquatic floating herbs. Leaves petioled, orbicular or reniform, 

 entire. Flowers monoecious ; males 2-3 in a peduncled 2-foliate 

 spathe ; females solitary within a spathe. Sepals 3, herbaceous. 

 Petals 3, white, membranous. MALE flowers. Stamens 6 or 9 ; 

 staminodes 6 or 3 ; filaments forked, anther-cells basifixed. 

 FEMALE flowers. Staminodes 6, in pairs. Ovary ovoid, 6-celled ; 

 ovules many ; stigmas 6, linear, 2-fid. Fruit an ovoid or oblong 

 fleshy berry, 6-celled. Seeds numerous ; testa pulpy, filled with 

 spiral vessels ; embryo ovoid. Species 2 or 3, in Europe and Asia. 



H. cellulosa, Buck.- Ham. in Wall. Cat. 5042 ; Prain Beng. 

 PI. 997. H. Morsus-Ran, F. B. I. V, 662 (in part) ; Eoyle III. 



377. 



Prain in his Beng. Plants follows Buchanan-Hamilton in consider- 

 ing this plant as specifically distinct from the European H. Morsus- 

 Ranaz, to which it has been referred in the Fl. Brit. Ind. The reni- 

 form leaves are much less deeply lobed at the base, and after flower- 

 ing they become very much enlarged. The male flowers contain 12 

 antheriferous stamens, 3 of which are sterile. "Within the area of 

 this flora specimens of this plant were collected by Buchanan-Hamil- 

 ton in the Gorakhpur district, and by the present writer in the N. 

 Oudh district of Bahraich. The plant appears to be common also in 

 N. and Central Bengal. 



6. OTTELIA, Pers. ; FL Brit. Ind. v, 662. 



Submerged or partially floating fresh-water herbs with fibrous 

 roots. Leaves radical, crowded, the submerged narrow and shortly 



