Ivesia. ROSACEA. 183 



ish, spatulatc, equalling the calyx : stamens 20 : carpels 4 to 6. — Bot. Wilkes Exp. 

 288, t. 4; Gray, 1. c. 531. 

 On the Klamath River (Pickering) ; Sierra Valley, Lemmon. 



2. I. unguiculata, < Iray. Closely resembling the last, sometimes less densely 

 villous : cymes less crowded : calyx 2 or 3 lines long, with narrow acuminate lobes 

 and bractlets : petals white, unguiculate, the blade orbicular, somewhat exceeding 

 the calvx: stamens usually 15 : carpels 5 to 8. — Proc. Am. Acad. vii. 339; Watson, 

 1. c. 448. 



Yosemite valley (Bulander, Gray) ; Sierra Co., Lemmon. 



3. I. Webberi, Gray. Low, loosely villous with spreading hairs : leaflets 4 to 

 G pairs, approximate, 2 - 5-parted, witli linear segments, 3 to 5 lines long : stems 

 nearly naked, smooth above : flowers mostly on long pedicels in rather loose cymes: 

 calyx 2 or 3 lines long ; lobes lanceolate ; bractlets small : petals yellow, narrowly 

 oblong, about ecmalling the calyx : stamens 5 to 10 : carpels 3 or 4 : akenes large, 

 ovate, a line long or more — Proc. Am. Acad. x. 71. 



Sierra and Indian valleys, in ravines, Webber, Lemmon. 



* * Flowers yellow, in a rather compact cyme upon a nearly naked stem: low or 



dwarf, alpine. 



4. I. Gordoni, Torr. & Gray. Viscid-pubescent and often somewhat hirsute, 

 or glabrate : stems 3 to 10 inches high from a thick resinous caudex : leaflets 

 numerous, approximate, 1 to G lines long, obovate, 3-5-cleft or parted, with oblong 

 or spatulate segments ; cauline leaves one or two, pinnatifid : flowers in a close cyme, 

 at length somewhat open : calyx 2 or 3 lines long : petals yellow, narrowly oblong 

 to broadly spatulate, usually not exceeding the calyx : stamens 5 : carpels 2 or 3, 

 or more. — Pacif. R. Rep. vi. 72; Gray, Proc. Am. Acad. vi. 530; Watson, Bot. 

 King Exp. 90. Horkelia Gordoni, Hook, in Kew Jour. Bot. v. 341, t. 12. 11. (') 

 miiltifolioliitu, Torr. in Sitgreaves Rep.' 159. 



Var. pygmaea, Watson. Much reduced, an inch or two high or even less, 

 glandular and hirsute : leaflets very small and crowded : stamens sometimes 10. — 

 I. pygmaea, Gray, 1. e. 531. 



Var. lycopodioides, Watson. Nearly glabrous: leaflets still more crowded and 

 imbricated, thick and rounded. — /. lycopodioides, Gray, 1. c. 530. 



In the Sierra Nevada from Mono Pass (Brewer) to Sierra Co. (Lemmon), and in the mountains 



of W\ uig, Utah, and Arizona. The varieties in the higher Sierra Nevada, at 11,000 to 12,000 



1'eet altitude. 



5. I. Muirii, Gray. Dwarf, densely silky-villous : stems an inch high, from a 

 thick caudex : lea\es terete with the very numerous small crowded and imbricated 

 silky leaflets : flowers small, in a close cyme : calyx a line long, purplish, exceeding 

 the narrow spatulate "yellow" petals: stamens 5 ; tilaweiits short : carpels usually 

 two. — Proc. Am. Acad. viii. (527. 



On Ml. Hoffmann, at 9,000 feet altitude, Jnlm Muir. Kxeept fur the reduced number of 

 stamens and shorter lilautents it would be referred to /. santohnoides. 



* * * Flowers in a diffuse panicle : stems leafy. 



G. I. santalinoides, Gray. Stems 6 to 18 indie-, high, slender, sparingly 

 villous: leaves densely silky-villous with white hair.-, i' to I inches long, terete 

 with the very numerous small crowded and imbricated leaflets : panicle very dif- 

 fusely branched; bracts very small, villous : (lowers on slender at length elongated 

 pedicels : calyx a line long, villous or nearly glabrous, often purplish : bractlets 



short : petals white, spatulate to obovate, exceeding the calyx i sta ns 15; tila 



ments long and slender; anthers purple: carpels solitary. — I'ioc. Am. Acad. \i 

 531 & vii. 339. 



