30 RAXUXCULACE.E. Ilanuiicuius. 



King Exp. 9. — High Rocky Mountains of Colorado, first coll. by P«/Ty,and of the Wasatc-h, 

 S.. Utah, first coll. by \\\ilson. Well developed in wet phues along streamlets in the lower 

 part of alpine region, where it becomes procumlieut. On drier soil it is often coarser-leaved, 

 much smaller flowered, and with longer carpel-heads, having a narrow receptacle of even 

 half inch in length. 

 = = = == Leaves mostly cleft or more divided, roundish radical undivided ones, when 



present, at least crenate or dentate : akenes turgid or lenticular, margiuless. 

 a. ilontane or high northern species, truly perennials, with fibrous or slightly thickeiied 



roots : flowers with conspicuous and pretty large petals, except sometimes in R. ajfifiiti. 



1, Head of carpels in fruit globular or oviil : styles elongated but usually only subulate base 

 j)crsisteut as a short beak or a))iculus on the leuticidar akene. 



R. Arizonicus, Lemmon. a foot or less high, glabrate or above glabrous, below usually 

 ■with some soft villous liairs : fascicled roots more or loss thickened : stems .slender and naked 

 above, several-inany-fiowered : radical leaves round-cordate or sometimes cordate-oblong and 

 strongly crenate-deutate, or later ones about 5-<-left and the segments 3-5-lobed ; cauline 

 once or twice 3-parted into narrow linear divisions: ])etals (sometimes 6 or 7, 3 to 5 lines 

 long) oblong or at first obovate : akeiies lenticular and witli thin acute margin, lightly 

 pubescent, conunonly in a small globular head, having a subulate receptacle. — Lenimim 

 in Gray, l^roc. Am. Acad. xxi. 370. li. affinis, Torr. Hot. Mex. Bound. 29, in part; lioth- 

 rock in Wheeler, Kep. vi. .57. — Mountains of S. Arizona, Wrighl (837),^ />fw/« oh, among rocks, 

 &c. Also Willow Spring, Arizona, Rolltrork, a form connecting with the second variety. 



Vax. SUbaffinis, Gray, 1. c. A dwarf ami alpine form, simulating R. afjiitix, mostly 

 1-flowered, with thickish oval head of akenes: these den.^ely pubesc<Mit, almost eijuallod l»y 

 the .«ubulate .style.- — On Mount Agassiz, of the San Frauci.sco Mountain.s, at 12,000 feet, 

 Le in HI 0)1. 



Var. subsagittatus, Gray, 1. c IJathcr stout, villous with a deciduous pubescence, 

 simple-stemmed and fewer-flowered : radical leaves mainly suljcordate-oblong or somewhat 

 sagittate, thick; the middle nerves apjjroximate : petals broadly obovate, half inch or less 

 long : head of akenes stouter, oval. — N. x^rizona, in Delavergue Park of the San Francisco 

 Mountains, Lemmon ; in wet ground. 



R. Suksd6rfii, Gray. A "span or less high, glabrous, wth slender 1-3-flowcred .«tems: 

 leaves small (half inch or more long) subreniform or broadly flal)elliform Avith truncate 

 ba.'-e, deeply 3-5-cleft or parted, the radical into cuneate 3-5-vieft or incise'! divisions, those 

 of the ufiper cauline linear : petals round-obovate, retuse, a third to half inch long, deep 

 yellow: akenes glabrous, turgid-lenticular, acutish-edged, surmounted by a nearly filiform 

 style of equal length (three fourths line), which is at length apparently deciduous; the 

 head globular. — Proc. Am. Acad. xxi. 371. — Damp ground on Mount Adams, Washington, 

 at 6.000-7,000 feet, Snksflorf; also, wet alpine meadows in Blue Mountains, E. Oregon, at 

 toward 8,000 feet, Cnsick, ^Wth young akenes in more oblong head, not yet turgid, obscurely 

 pulie.«cent ;3 fl. July, August. 



2. Head of carpels in fruit oblong or cylindraceous : akenes more turgid and rounded or at 

 least obtuse on the back. 



? R.* eximius, Greene. "Radical le.n-es very few, often one only, on a sliort stout petiole 

 1 to 2 inches longj the blade of cuiieate-obovate or almost flabelliform outline, deej)ly about 

 7-lobed at the l)road sumnn't, otherwise entire ; upper cauline leaves se.ssile, l)roadly cuneiform, 

 I inch long, cleft to the midiile into about 5 lanceolate or broadly linear lobes : periphery of 

 the expanded large corolla quite circular by the overlapping of the numerous broadly 

 obovate or almost obcordate yellow petals." — Erythea, iii. 19. — Mountains of Colora<lo to 

 Idaho. Flowers large as in R. acloneiis, but foliage so close to forms of the preceding and 

 folloAving species as to make its specific distinctness still doubtful, especially in the al)sence 

 of mature fruit. No autlienticated specimens having been seen by the editor, the dcscripl on 

 is here drawn from the original characterization. 



1 Also at the Copper Mines, New Mexico, Thurber, no. 231. 



2 Insert syn. /?. Arizonicus, Greene, Pittonia, ii. 60, not Lemnion. J'. suhmijUtatus, var. subaJUms, 

 Greene, 1. c. 110. 



8 Mt i;.,;,n.-, (I h Mir:, ; Olympic Mts., Henderson. 



