Purshia. ROSACEJE. J 73 



rather slender prickles, somewhat glaucous : leaves 3-foliolate, rarely 5-foliolate, 

 often simple and 3-lobed on the" flowering branchlets ; leaflets ovate to oblong, 

 coarsely toothed, smooth or more or less pubescent or tomentose ; veins, petioles, 

 peduncles, and calyx aculeate with slender prickles ; stipules oblanceolate to linear, 

 often long and toothed : calyx-lobes ovate-lanceolate, acuminate, or often foliaceously 

 tipped and exceeding the petals : fruit oblong, sweet. — Linna?a, ii. 11. II. innrm- 

 petaliis, Dougl. ; Hook. Fl. i. ITS, t. 59. Ii. viti/olius, Cham. & Schlucht. 1. c, the 

 simple-leaved form. 



Frequent in the Coast Ranges from Santa Barbara and Ventura counties (Ojai, Goodak) to 

 Fraser River ; also in Idaho. A very variable species. 



6. CHAMjEBATIA, Benth. 



Calyx persistent, tnrbinate-campanulate, 5-lobed. Petals 5, spreading. Stamens 

 very numerous, in several rows on the throat of the calyx, short. Carpel solitary, 

 smooth : style terminal, villous at base, deciduous : stigma decurrent : ovule solitary, 

 erect. Fruit a coriaceous obovoid akene, included. Seed with a spongy testa and 

 small albumen: radicle inferior. — A glandular-pubescent fragrant shrub; leaves 

 thrice pinnate with numerous minute leaflets; flowers white, in a loose cyme. 



1. C. foliolosa, Benth. An erect shrub, a foot or two high ; branches numer- 

 ous, slender, leafy, glandular-pubescent and viscid throughout, the outer integument 

 soon deciduous, leaving a smooth dark-brown bark : leaves ovate or oblong in out- 

 line, 2 or 3 inches long, finely dissected; leaflets usually glandular-tipped; stipules 

 small, linear : cymes few-flowered, terminating the young branches; bracts leafy, 

 toothed or pinnatifid : calyx densely glandular-hairy, villous within, the ovate acu- 

 minate lobes as long as the tube or at length longer: petals white, obovate, 3 or -1 

 lines long : akene nearly filling the calyx, abruptly acute. — PI. Hartw. 108 ; Torrey, 

 PL Fremont. 11, t. C; Hook. Bot. Mag. t. 5171. 



On tlie western slope of the Sierra Nevada, at 3,000 to 7,000 feet altitude, from Maripos l Co 

 to Nevada Co., Dowering from -May to July. It is very abundant in some places, tilling tin air 

 with its strong resinous rather disagreeable odor. 



7. PURSHIA, DC. 



Calyx persistent, funnel-shaped, 5-lobed. Petals .">, exceeding the calyx-lobes, 

 yellow. Stamens about 2~>, in one row. Carpels solitary, sometimes 2, narrowly 

 oblong, attenuate into the persistent style : stigma decurrent : ovule solitary, erect 

 Fruit a coriaceous akene, pubescent, attenuate at each end, exserted. Seed oblong- 

 obovate, without albumen, the thin seed-coats separated by a layer of dark-purple 

 intensely bitter resinous matter: radicle inferior. — A diffusely branched shrub; 

 leaves mostly fascicled, cuneatc, 3-lobed: Bowers solitary, terminal on the short 

 In tnchlets. 



I. P. tridentata, In'. Usually 2 to 5 (rarely 8 or 10) feet high, with brown 

 or grayish bark j the young branches and numerous short branchlets pubescent : 

 leaves cuneate-obovate, •"> t" 12 lines long, 3-lobed at the apex, petioled, wliite- 

 tomentose beneath, greener above ; stipules short : Bowers nearly sessile : calyx 2 t" 



I lines long, tomentose with some glandular hairs, tin' oblong obtuse lobes shorter 



than the lube: petals spat ulate . >li, .vate. :'. t.. ."1 lines long: fruit half an inch long. 



-Hook. Fl. i. 170, t. 58 ; LindL Bot. [leg. t. 11 Hi; Torr. .V Gray, 11 i. 128; 

 \\ ii on, Bot. King Exp. 82. 



Frequent throughout tin interior from the eastern -1"|»- of the Sierra '■ 1 tho Rocky 



Mountains, and from the British boundary to Arizona and New Mexico. 



