ROSACEiE. 69 



narrow claw and rounded limb : stamens about 15 : achenes 5 — 8. — 

 Eastern foot-hills of the Sierra northward ; also in the Yosemite Valley. 



30. P. santolinoides, Greene, 1. c. 106 : Gray, 1. c. vi. 531 (1868), under 

 Icesia. Stems slender, 3 2 — IJ2 ft- high: leaves densely wbite-villous, 2 — 4 

 in. long, terete with the many small imbricated leaflets : fl. scattered in a 

 very ample cymose-dichotomous panicle, on pedicels slender and at length 

 elongated : calyx 1 line long, villous or glabrate ; bractlets short : petals 

 spatulate or obovate, exceeding the calyx, white : stamens 15 ; filaments 

 long, slender ; anthers purple : achene 1. — In the high Sierra, from 

 Lake Tahoe southward to perhaps Kern Co. 



•»— -f— Alpine species with scapifonn almost leafitss steins, and a ter)ainal 

 more or less compact cymose inflorescenct. 



31. P. Webberi, Greene, 1. c. ; Gray, 1. c. x. 71 (1874). Low, loosely 

 villous : leaflets 9 — 13, only approximate, 3 — 5 lines long, 2 — 5-parted 

 into linear segments : fl. mostly long-pedicelled in congested cymes : 

 calyx 2 — 3 lines long ; lobes lanceolate ; bractlets small : petals narrowly 

 oblong, yellow : stamens 5 — 10 : achenes 3 or 4, large, ovate. — Sierra and 

 Indian valleys in the Sierra northeastward, Webber, Lemmon. 



32. P. decipiens, Greene, 1. c. 106. Iresia pygmxa. Gray, 1. c. vi. 531 

 (1868). Dwarf, 1 — 4 in. high : viscid glandular and sparsely villous : 

 leaflets much crowded, 1 — 6 lines long : inflorescence in age open-cymose, 

 in fl. congested : calyx nearly rotate : petals oblong-obovate, retuse 

 or emarginate, yellow : stamens 5 — 10 ; filaments subulate : achenes 

 2 — 4. — Alpine summits of the Sierra. 



33. P. GfOrdoiii, Greene, 1. c. ; Hook, in Kew Journ. Bot. v. 341 t. 12 

 (18.53), under Ilorkelia ; T. & G. Pac. R. Eep. vi. 72 (1855), under Ivesia. 

 Taller than the last, sometimes 1 ft. high : leaves similar but more 

 ample : cyme dense, terminating an erect scapiform stem ; calyx cam- 

 panulate ; segments erect or little spreading : petals yellow : stamens 5 ; 

 filaments filiform : achenes 2 or 3. Var. lycopodioides (Wats.). Ivesiai 

 lycopodioides. Gray, Proc. Am. Acad. vi. .530 (1868). Dwarf, nearly gla- 

 brous : leaves terete or nearly so by imbrication of the minute rounded 

 leaflets, otherwise apparently as in the type. — The type at subalpine ele- 

 vations of the Sierra. The variety may be a reduced alpine state of it 

 or it may prove a distinct species. 



34. P. Muirii, Greene, 1. c. ; Gray, 1. c. viii. 627 (1873), under Iresia. 

 Dwarf, densely silky-villous : stems 1 in. high from a thick caudex : 

 leaves terete by imbrication of the minute silky leaflets : fl. small, in a 

 close cyme : calyx purplish, 1 line long ; segments exceeding the narrow 

 spatulate yellow petals : stamens 5 ; filaments short : achenes 2. — On 

 Mt. Hoffmann in the Sierra Nevada, at 9,000 ft. altitude. John Muir. 



