55 



Gen. Char. Xiapitula heterogamous : florets of the ray ligulatei,, 

 female, of the disk hermaphrodite : styles of the hermaphrodite 

 short, elongated 'into 2 long rough stigmas : achaenia linear, angled, 

 bearing two retrorsely-hispid bristles. — Erect glabrous herbs, with 

 alternate pinnatifld leaves, congested near the btise : capitula -with- 

 out bracts : involucre short, 2-series : receptacle paleolate : flowers, 

 yellow. 



(1) G. piNNAHFiBA. {Dec.') 



Ident. Dec. prod. V. p. 632. — Wight's Contrib. p. 19. 



Syn. Bidens pinnatifida. Wall. — Zinnia Bidens, Retz. — Roxh. 

 fiar. Ind. Ill p, 435. 



^ Spec. Chab. Erect : stems dichotoroous : leaves alternate, 

 crowded, short, pinnately divided : lobes linear, acute, entire ; up- 

 permost ones undivided : heads of flowers erect : awns on the seeds 

 •widely spreading. 



Qoruckpore. South Mahratta country. Samulcottah. Chin- 

 gleput. Flowering in the rainy season. 



GENUS XLVII. ENHYDRA. 



Syn* Po|. Superflun. Sexi Syt: 



Derw. OEVam En, in, and Hydor, water, alluding to the habit 

 of the plant. 



Gen. Char. Capitula heterogamous : all the florets wrapped in 

 9 folded paleae: exterior ones many-series, female, interior her- 

 maphrodite, sterile : tube of the ray florets filiform, of the disk 

 subcorneal : limb of the ray subligulate, 3-4-cleft, pt the disk 5- 

 cleft : stigmas exserted, revolute, rough towatds the apex : achaenia 

 bald, beakless, enclosed in the paleas. — Ag.uatic rooting opposite- 

 leaved herbs, with axillary capitula : receptacle small, 'flattidi ; 

 palese as if 2-valved, connivent : involucre 4-leaved, 2 opposite, 

 larger: flowers small, white. 



(1) E. HiNGCHA. (Dec.) 



Ident. Dec. prod. V. p. 637- 



Syn. E. heloncha, Dec. I. e. — Meyera heloncha, Wall. — Hingt« 

 cha repens, Roxb. Jlor. Ind. III. p. 442. 



Spec. Char. Stem glabrotis at the base, slightly hairy at the 

 apex : leaves somewhat hastate at the J>ase, scarcely petioled, ser- 

 rated, glabrous : capitula sessile. 



In moist places and pooh in Bengal. Dumdum, Goalpara. 



Silhet and Assam. Flowering nearly all the year. 



