EANTTNCITLTrS. I 



like. Stam. many, exceeding pistils. Style hooked. Carp, 

 blunt, inner edge straight. — Ponds and streams. P. V. VI. 



E.I. 



4. a. confusm (Godr.); submersed I. loosely trifuroate not 

 tassel-like, segments long rather rigid, floating I. long-stalked 

 subpeltate suhtripartite with sessile obovate 3 — 6-lobed segments, 

 ped. slender tapering gradually exceeding the L, 11. large, pet. 

 cuneate-obovate 7 — 9-veined not contiguous persistent, stig. 

 tongueshaped, receptacle ovoid-conic, carp, ^-ovate compressed 

 and narrowed upwards. — St.' 82. 2. — Floating 1. semicircular, 

 flat, nearly tripartite, outer base of lateral segments rounded. . 

 Stip. oblong, much adnate. Buds globular. ¥1. starlike. Stam. 

 many, exceeding pistils. Style recurved. — Ponds and ditches, 

 especially near the sea ; often in brackish water. P. VI. — IX. 



lij. 



5. H. Saicddtii (Godr.) ; submersed 1. closely trifurcate, seg- 

 ments rather rigid not tassel-like, floating 1. long-stalked tri- 

 partite with sessile or stalked wedgeshaped 3 — 4-lobed segments, 

 ped. thick narrowed at the top exceeding 1., pet. 7- veined not 

 contiguous persistent, stam. not exceeding pistils, stigma tongue- 

 shaped, receptacle long-conic, carp, ^-obovate inflated at the 

 end. — E. B. 8. 291d6. — floating 1. nearly or quite tripartite, the 

 base of all the segments wedgeshaped ; or often of many linear 

 blunt segments. Stip. much adnate. Buds globular but a 

 little flattened at the top. Fl. starlike. Stam. 15 — 20. Style 

 straight, beaklike and persistent below, recurved above. Ke- 

 ceptaole thicker than ped., very. tall. Carp, very many. — 

 Slightly brackish water or near the sea. P. V. — VIII. 



E. S. I. 



6. R. flm-Umn'dus (Bab.); submersed 1. closely trifurcate, 

 segments rather rigid divaricate not tassel-like, floating 1. long- 

 stalked subpeltate J-trifld or tripartite with obovate 3 — 5-lobed 

 segments, ped. not tapering scarcely exceeding the 1., fl. large, 

 pet. obovate-cuneate 9 — many-veined not contiguous persistent, 

 stam. many exceeding pistils, stig. tongueshaped, receptacle 

 spherical, carp, ^-obovate very blunt. — A. N. H. ser. 2. xvi. 

 397. K B. S. 2969. — Floating 1. convex, divided more than 

 halfway down, more than semicirctdar ; outer base of lateral 

 segments much rounded ; rarely with stalked segments. Stip. 

 broad, with a free rounded end. Fl. starlike. Stam. 20—30. 

 Style recurved. Eeceptacle as thick as peduncle. Inner edge 

 of carp, nearly straight. — Ponds. P. V. — IX. E. 



7. R. pseudo-fiuitans (Newb.) ; submersed 1. loosely trifurcate 

 tassel- or whip-shaped subsessile, segments very long, floating 1. 

 long-stalked subpeltate J-trifid or tripartite with obovate seg- 



