Caltha. 1. RANUNCULACE^. 143 



peduncles. The lobes of the root leaves are also rounded rather than acute at 

 apex. May, Jn. () 



10. R. FAScicuLARis. Muhl. Early Crowfoot. 



St. erect, branched; lis. pubescent, ternate, the middle segments deeply 3- 

 cleft, lateral ones remotely 3-lobed; ccd. villous, spreading, shorter than the 

 petals. — Rocky woods and hills, Penn. to Wiscon. N. to Can. Root a fascicle 

 of fleshy fibres. Radical leaves on petioles 3 — 8' long, so divided as to appear 

 almost pinnate; upper leaves 3-parted, nearly sessile. Flowers large. Petals 

 yellow, cuneate-obovate, with a scale at base as broad as the transparent claw. 

 Apr. Ma)% 



11. R. Pennsylvanicus. (R. hispid us. Ph.) Bristly Crowfoot. 



St. erect, and with the petioles covered with stiff, spreading hairs ; lis. vil- 

 lous, ternate, Ifts. subpetiolate, deeply 3-lobed, incisely serrate ; cal. reflexed, 

 rather longer than the roundish petals ; carpels tipped with a short, straight 

 style. — A very hairy species, in wet grounds. Can. and U. S. Stem U — 3f 

 high. Leaves 2 — 3' diam. ; leaflets strongly veined and with spreading seg- 

 ments. Flowers numerous, small, bright yellow. Fruit in dense oblong or cy- 

 lindrical heads. Jn. — Aug. 



12. R. REPENs. (R. intermedins, Eaton. R. Clintonii. Beck.) 



St. branching from the base, prostrate, radicating at the joints; Ivs. trilb- 

 liate, Ifts. petiolate, cuneiform, 3-lobed, cut-dentate ; j^e^Z. furrowed; cal. spreading ; 

 carpels with a broad, not recurved point. — In moist or shady places, Can. and 

 U. S. Stems 1 — 3 or 4f long, generally nairy at base, the early flowering 

 branches erect. Petioles hairy, long. Leaves hairy on the veins, dark green. 

 Flowers middle size, bright yellow. Petals often emarginate. May — Jl. 



/?. litiearilobus. DC. St. very long, floriferous; lobes of Ivs. very narrow. 



y. Marilandicus. T. & G. St. and petioles densely hirsute with soft hairs ; 

 Ifts. distinctly petiolulate. 



13. R. PuRsnii. Richardson. Floating Crowfoot. 



Floating; st. long; submer gedhs. cicftmXo numerous capillary segments, 

 emersed ones reniform, 3 — 5-parted, the lobes variously divided ; sep. reflexed, 

 half as long as the petals ; carpels smooth, with a short, straight, ensiform style ; 

 hds. globose. — Ponds, sluggish streams, and muddy places, Can., U. S. Stem 

 1 — 2f or more in length, fistulous. Leaves pentangular in outline, | — li' 

 diara., tho.se below most finely divided; petioles \ — 2' in length. Flowers 

 bright yellow, emerging on forked, striate peduncles. May, Jn. 



fi. (R. fluviatilis. Bw. R. lacustris. Beck.) Lvs. all capillaceous-multi- 

 fid ; Jls. as large as in R. acris. 



14. R. AauATiLis. p. capillaccus. River Croufoot. 



St. floating ; submersed lvs. fililbrmly dissected ; pet. obovate, larger than the 

 calyx, white ; carpels transversely rugose. — Ponds and sluggish streams, Arctic 

 Am. to S. Car. W. to Rocky Mts. Tlie wliole plant is submerged except the 

 flowers, and perhaps a ^o.^ of the upper leaves. Stem 1 — 2f or more in length, 

 slender, weak', round, smooth, jointed. Leaves divided dichotomously into 

 numerous, hair-like .segments, in outline roundish and \ — 1' diam. Peduncles 

 thick, I — \\' long. Flowers smaller than in R. acris. Petals rather narrow, 

 while, except the yellow claws. Jl. Aug, 



06«erpff/<on.— Several of the above meiifioncil 8i)ecie8 are double-flowored in cultivation, as Nos. 8, 9, 

 and 12. Of foreign Bpecies, II. Asiaticu.'^, the t'orden Ranunculus, with large double flowers varying to 

 every hue, and K. aconitifoliua, wiUi white double flowers, are sometimes, out not generally, found in 

 our garde nn. 



G. CALTHA. 



Gr. /caXaSoj, a poblct ; the yellow calyx may well be compared to a golden cup. 



Calyx colorod, of 5 orbicular sepals, resembliug petals ; corolla ; 

 stamens 00, shorter than the sepals; follicles 5 — 10, oblong, com- 

 pressed, erect, many-seeded. — %■ Aquatic aiuL very glabrous. 

 C. PALUsTtiis. Marsh Marigohl. Coic.<<Iips. 



St. erect ; lvs. cordate, suborbicular, crcnatc. — Wet meadows, Can. to Car. 

 \V. to Oregon. Root large, branching. Stem about 11 high, hollow, roQDd, 

 13 



