6 
1. KANTJNCULAGE^. 
halfway do\vii, more than semicircular ; 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. 
8. R. penicilhHiis (Bab.) ; submersed 1. loosely trifurcate 
tassel-or whip-shaped subsessile, segments very long, floating 1. 
long-stalked subpeltate |-trifid or tripartite vnth. obovate seg- 
ments, each having two or three notches, ^^eJ. ve^y long exceed- 
ing ihe Imi'fs, fl. large, pet. broad becoming obovate-cuneate 
9-veined contiguous persistent, stam. many exceeding the 
pistils, stigma . . . ., receptacle spherical, carp, i-obovate very 
blunt. — Jl. i>fidcil latum (Dum.), R. pseudo-fluitans (ed. vi.). — St. 
wholly submersed. Floating 1. semicircular or broader than 
long, outer base of lateral segments much rounded. Often there 
are no floating leaves, when it seems to be the B. aq^iatile, 
(i. rivulare (Schur), R. pseudo-fluitanii (Hiern). 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. 
9. R. peltdtus (Schrank) ; submersed 1. loosely trifurcate, seg- 
ments rather rigid divaricate not tassel-like, floating 1. long'^ 
stalked subpeltate nearly half 3 — 5-fid. with obovate segments 
having 2 or 3 notches, ped. tapering exceeding thv leaves, fl. large, 
pet. round becoming obovate-cuneate 9-veined routigvous per- 
sistent, stam. many exceeding pistils, stigma clubshaped, recep- 
tacle ovoid, carp, i-obovate very blunt. — E. B. S. 2f)fi5. St. 67. 7. 
£. truncatum Dum. — Floating 1. §-circular, convex, outer base 
of lateral segments nmch rounded. Stip. adnate nearly through- 
out. Fl. stveet-scented, very large. Stam. about 30. Style 
curved. Receptacle small. Inner edge of carp, nearly straight. 
— R. elongatus (Hiern !)_, B. elongatvvi (Scliultz) has very much 
longer ped. but otherwise does not seem to differ, except that 
the l.-segm. are rather less rigid. — In water and wet places. 
P. v.— IX. E. S. I. 
10. R. Iri'purtitus (DC); submersed 1. loosely trifurcate, segments 
very slender somewhat collapsing, floating 1. small deeply tritid with 
rounded 2 — 5-lobed segments, the central usually as long a.s the lateral, 
stip. roundish, upper free, ped. slender, about as long as the petioles, 
ultimately recnrvetl, H. very .suiall, pet. scarcely exceeding the cal., 
stam. 5 — 8, stigma tapering, receptacle small roundish, eaq>. few obovate 
inflated with a very smali beak ,,labrous. — R. iii. 2.— A small slender 
plant resembling Sp. 11 but at once distinguished by the well-developed 
capillary submersed 1., the rare submersed 1. of R. intermcdiv.^ having the 
segments Hattened. — Helston and Koche, Cornw. Baltimore, Cork, 
Mr R. A. Phillips. P. IV— VI. ,K.I, 
