8 1. EAirCrNCITLACE*. 



ments each having two or three notches, pad. very long- exceed- 

 ing the leaves, fl. large, pet. broad becoming obovate-cuneate 

 9-veined contiguous persistent, stam. many exceeding the 

 pistils, stigma . . . ., receptacle spherical, carp. J-obovate very 

 blunt. — Seem. J. of Bot.in. 115. — St. vrhoUy submersed. Float- 

 ing 1. semicircular or broader than long, outer base of lateral 

 segments" much rounded. Often there are no floating leaves. 

 Submersed 1. often 3 — 4 in. long with the segm. lying close 

 together almost as in R.fluitans, flaccid and whip-shaped. — In 

 water, especially streams. P. V. — VIII. E. I. 



8. R. peltdtus (Fr.) ; submersed 1. loosely triforcate, segments 

 rather rigid divaricate not tassel-lihe, floating 1. long-stalked 

 subpeltate nearly half S — 5-fid with obovate segments having 

 2 or 3 notches, ped. tapering exceeding the leaves, fl. large, pet. 

 round becoming obovate-cuneate 9-veined ccmtiguovs persistent, 

 stam. many exceeding pistils, stigma clubshaped, receptacle 

 ovate, carp, l-obovate very blunt. — E, B. 8. 2965. St. 67. 7.— 

 Floating 1. f-circular, .convex, outer base of lateral segments 

 much rounded. Stip. adnate nearly throughout. Fl. szveet- 

 scented, very large. Stam. about 30. Style curved. Recep- 

 tacle small. Inner edge of carp, nearly straight. Rarely a fl. 

 springs with a divided leaf — In water and and wet places. P. 

 v.— IX. E. S. 



9. R. tripartitus (DC. ?) ; " submersed 1. divided into capillary 

 tassel-like segm.," floating 1. long-stalked subpeltate deeply 

 trifid with cuneate-obovate 2 — 4-fid segments, ped. not tapering 

 falling short of I., fl. very small, pet. oblong 3-veined not con- 

 tiguous, stam. few exceeding the pistils, stig. small on long 

 mimlate terminal style with a slender hose, receptacle globose, 

 carp, unequally obovate nvuch inflated with a nearly teiTninal 

 point. — E. B. S. 2946. — Floating 1. f-circular; outer edge 

 straight below ; lateral segments with 3, middle with 2—4 

 crenatures. Upper stip. free. Buds globular. Pet. very small, 

 scarcely exceedmg sep., pinkish. Stam. 5 — 10. Style deciduous. 

 Receptacle globose. Inner edge of carp, much rounded. Xo 

 divided 1. have been seen in Britain. — Streams. P. V. — VIII. 



E. 

 ** Submersed 1. not as in Section*. — t Receptacle hispid. 



10. R. circindtus (Sibth.) ; 1. all submersed and sessile trifur- 

 pate with repeatedly and closely forked rigid segments all placed 

 I'll one roundish plane not tassel-Hke, ped. tapering exceeding 1., 

 fl. large, pet. obovate many-veined nearly contiguous persistent, 

 stam. exceeding pistils, stig. cylindrical, receptacle oblong, cai-p. 

 ^-ovate compressed rather acute. — E. B. 8. 2869. — St. sub- 

 mersed. L. sheathing, not auricled, foi-ming a flat rigid disk. 

 Buds flattened at the top. Stam. 15 — 20. Receptacle narrower 



