CATALOGUE, 89 



Truckee Valley and East Humboldt Mountains, Nevada; 4^9,000 feet alti- 

 tude; July-September. (339.) 



PoTENTiLLA Anserina, L. From Pennsylvania to "Wisconsin and north 

 to Greenland, throughout British America and Alaska, and from the Rocky 

 Mountains west to California and Oregon ; New Mexico. Diamond and Ruby 

 Valleys, Nevada, and in the Jordan Valley and the Wahsatch; 4,300-6,000 

 feet altitude ; May-July. (340.) 



PoTENTiLLA FRUTicosA, L. From the Northern States throughout 

 British America to the Rocky Mountains and Behring Strait ; in the mount- 

 ains of "Wyoming, Colorado, and California. In the East Humboldt Mount- 

 ains and the valleys on each side, and in the Uintas ; 6-11,000 feet altitude ; 

 July, August. (341.) The alpine form, somewhat reduced and of more 

 compact growth, has the leaves very short and linear. (342.) 



PoTENTiLLA GLANDULOSA, L. Stem erect, branched above, villous- 

 pubescent, viscid toward the summit, as also the peduncles and calyx ; leaves 

 pinnately 5-9-foliolate ; leaflets ovate or roundish, or of the nearly sessile cau- 

 line leaves obovate or oblong, all deeply and often doubly serrate-toothed or 

 incised ; stipules mostly entire ; branches of the cyme elongated and rather 

 loosely flowered ; calyx-segments ovate, acute, equaling the broadly oval yel- 

 low petals; style fusiform and fleshy, inserted below the middle of the 

 ovary ; disk conspicuous but not glandular. — Stem 2° high ; distinguished 

 from P. arguta by its more numerous and slender branches and looser heads 

 of somewiiat smaller flowers, and by the eglandular disk. Oregon and Cali- 

 fornia. Found in the Pah-Ute, Battle, and East Humboldt Mountains, Ne- 

 vada, and in the "Wahsatch ; 5-6,500 feet altitude ; May-September. (343.) 



PoTENTiLLA PROCUMBENS, Clairv. {Sibbaldiu, L.) Grreenland, Labra- 

 dor, and the "White Mountains ; Unalaska ; the Rocky Mountains from Colo- 

 rado to latitude 56°, and the Sierras of California. Found on the East 

 Humboldt Mountains, Nevada, and on the Uintas ; 10-12,000 feet altitude ; 

 August. (344.) 



HoRKELiA^ PARViFLORA, Nutt. Tomcntosc j stem 1° high, viscidly-vil- 

 lous above, leafy; radical leaves 9-13-foliolate; leaflets short, roundish, the 



1 HORKELIA, Ch. & Schl. Calyx oampantilate, 10-cleft. Petals unguioulate or spatulate, (white 



or pink.) Stamens 10, inserted on the throat of the calyx ; filaments short, dilated, usually deltoid, peta- 



loid and persistent. Carpels many, or sometimes rather few, upon a small elevated villous receptacle ; 



" style articulated with the top of the ovary.— Leaves pinnate with numerous leaflets, which are somewhat 



Scattered, usually cleft or parted, the upper ones confluent. Gray, Proa. Amer. Acad, 6. 528. 



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