28 KANUNCULACE.E. RanuNculus, 



R. Lemmoni, Gray. Scainfonn tutted stems a span or two high, l-2-flowere(l. villous- 

 "l.uliesceut bcl.'w: leaves tlii.-kish, lanceolate, entire : petals 3 lines long, ohovate or ol)long : 

 akeues in an oval head, verv turgid, villous-puheseent. — Troc. Am. Acad. x. 68 ; Brew. & 

 Wats. Bot. Calif, i. 7. — Eastern part of the Sierra Nevada, California, in Sierra Valley 

 Lemiiion. 

 .^ ^_ .^ ^_. Terrestrial, at least some of the leaves lobed or divided : no rooting shoots or 



stolons except in R. repens and R. seplentriuimlis. 

 ++ Calyx clothed externally with long and soft black or brown hairs : arctic or alpine low 

 perennials, bearing .solitary large flowers : none of the leaves divided to base : akenes 

 rather turgid, subulate-beaked. 

 R. Macauleyi, Gray. Eoots a fascicle of fleshy fibres : stems a span liigh : leaves short- 

 pctioled, soft-pilose when young, soon glabrous, of thick texture, from almost linear with 

 truncate 2-.3-dentate apex to obovate-spatulate and obtusely 3-10-toothed : petals fiabelli- 

 form, creuulate, mostly half inch long, deep yellow. — Proc. Am. Acad. xv. 45 ; also in Au. 

 Kep. Chief Engineers' U. S. A. 1878, p. 1833, as R. «ira/<.s. — Alpine region of the Kocky 

 Mountains in San Juan Co., S. Colorado, at about 1 1,700 feet, McCauky, Peas'.. Too near 

 R. Alluiens, Laxm., which is R. frigidtis, Willd. Spec. ii. 1312, & Reichenb. Ic. PI. Crit. iii. 

 t 289, R. sulphureus of some authors, and perhaps an extreme form of the next species. 

 Akenes not seen. Young carpels with long straight subulate style.^ 

 R. nivalis, L. Glabrous or glabrate except the dark-woolly calyx: roots slender-filirous 

 from a short caudex : sten\s a span or two high: radical and few lower cauline leaves 

 slender-petioled, from cuneate-flabelliform to reniform, 3-5-lobed or deeply cleft, and the 

 lobes diverging : petals obovate or roundish, entire or obcordate-emarginatc, a quarter to a 

 third inch long. — Spec. i. 553 (Fl. Lapp. t. 3, f. 2) ; Fl. Dan. t. 1699; Schlecht. Animad. 

 IJanuuc. ii. 14; Reichenb. Ic. PI. Crit. i. t. 2, f. 6, 7 ; Hook Fl. Bor.-Ani. i. 17; Torr. & Gray, 

 Fl. i. 20, with vars. R. sulphureus, Soland. in Phipp's Voy. 202, &c., high arctic form, 

 approaching R. altaicns. — Arctic America, from Hudson Bay to Alaska, and sea coast, .south 

 in high Rocky Mountains to lat. 55°. (Greenland, N. Eu., N. Asia.) 



•H- ++ Calyx not dark-hairy: akenes (glabrous or pubescent) not nuiricate nor hispid. 

 = Leaves some of them quite entire (except in R. oxj/notns), .some simply few-lobed and the 

 lobes quite entire: alpine or subalpine low perennials, one -few-flowered, with fascicled 

 fibrous or tuberous roots : glabrous. 

 fl. Radical leaves mostly round-reniform and with 5 to 9 roundish lobes or deep crenatures : 

 akenes dorsally carinate, in an oblong head. 

 R. oxynotus, Gray. A span or two high, fibrous-rooted from a short caudex, bearing a 

 rosulate tuft of numerous radical leaves (of half inch or more in diameter) : cauline one or 

 two, cuneate-flabelliform. 3-5cleft or parted into oblong or lanceolate-linear lobes: petals 

 broadly obovate, 4 or 5 lines long : head of carpels at maturity about half inch long, with a 

 thick and fleshy receptacle : akenes semi-ovate, compressed, a line long besides the strong 

 subulate beak, glabrous. — Proc Am. Acad. x. 68; Brew. & Wats. Bot. Calif, i. 7. — High 

 peaks of the central Sierra Nevada, California, Brewer, Lemmon? 



b. Radical leaves not reniform nor cordate, nor several-lobed : akenes turgid, with roundish 

 back, forming a globose head : perennials. 

 R. glaberrimus, Hook. A span high, somewhat succulent: root of thickened fascicled 

 fibres : radical leaves from spatulate or oblanceolate to roundish or dilated-cuneate, with 

 tapering or obtuse or sometimes truncate base, and from entire to crenately 2-4-toothed 

 or short-lobed ; cauline 3-cleft or parted into narrower lobes or entire : petals broadly obovate, 

 a third to half inch long : akenes glabrous or minutely pubescent, tipped with a small short 

 beak; the mature head from 3 to 5 lines in diameter. — Fl. Bor.-Am. i. 12, t. 5; Torr. & 

 Gray,' Fl. i. 19 ; Brew. & Wats. 1. c. R. brevicaulis, Hook. Lond. Jouru. Bot. vi. 66, not Fl. 



1 Excellent fruiting specimens, collected in Colorado l)y Miss Eastwood, show the fruiting heads to 

 be ovate, and akenes "small, smooth, tipped with slend.T straightish but obliqucdy ascending styles; 

 cf. also Watson, Bot. Gaz. xvi. 346, and Eastwood, Zoc, iv. 2, where variations are described. 



2 Cloud's Rest, Mariposa Co., Calif., Congdon, and near Mineral King Mt. ace. to Coville, Contrib. 

 U. S. Nat. Herb. iv. 56. 



