170 



ROSACl'LE. 



* * Petals ivkite, broadly oblong, about tqiialling the 5-parted calyx : filaments 

 scarcely exserted : carpels densely hairy : ovules 2 : Jluivers in loose spreading 

 panicles. 



3. S. discolor, rursh. A difl'use shrub, 4 feet high or more, with grayish 

 Lrowii bark, pubescent: leaves broadly ovate, obtuse or acutisb, truncate at base ur 

 cuncato into a slender petiole, inoro or less silky-tonientoso beneath, nearly smooth 

 above, pinnatiiidly toothed or lobed, the lobes often ilentate: panicle much branched, 

 tomentose : calyx pubescent, the lobes oblong, obtuse, spreading. — Flora, i. 342. 



Var. ariaefolia, Wutson. Often tall (f) to If) feet high): leaves 2 or 3 inches 

 long, somewhat cane.scent beneath or scarcely so: panicle largo and oi)en. — aV. aria- 

 folia, iSnutli in l\ees ("yc ; Lindl. JJot, Keg. t. ISOf). 



Var. duniosa, Watson. Only I to 3 feet high ; loaves usually sn\all, an inch 

 Ion" or less, cuueatu into a short nuirgined petiole, ofUui white-tomentoso beneath : 

 panicle mostly smaller and less dilfuse,. — ,S'. dnnwsa, Nutt. ; Torrey, Stansbury Kep. 

 387, t. 4 ; Watson, Uot. King Exp. 80. *V. ariia/olia, var. discolor, Torr. & Gray, 

 FL i. 416. 



On low hills and in the valleys, mostly in the Coast Ganges, from Monterey County northwaid 

 to Fraser lUver., The var. dumosa is found in tlie Sierra Nevada, in dry rocky places, at 5,000 to 

 11,000 feet altitude, and tlicnce to Oregon, Colorado, and New Mexico ; more rarely in the Coast 

 Kanges also. Fragrant, with the odor of Sweet Birch. 



§2. Erect shrubs, with twice pinnate leaves and numerous minute leaflets: stipules 

 present: flowers perfect, large, in a leafy terminal racemose panicle. — Cham^- 

 UATIARIA, Porter. 



4. S. Millefolium, Torr. Stout, dilfusily branched, 2 to 5 feet high, glandu- 

 lar-pubescent anil more or less tomentose : leaves narrowly lanceolate in outline, 

 scattered or firscicled at the ends of the biancdies, 1 to 3 inches long, with very nu- 

 merous (about 20) piiuue and miinite obhui- obtu.se leallets (about G i)airs) ; stipules 

 linear, entire : llowers white, half an inch broad: calyx-tube turbinate; the erect 

 ac\ite lobes longer than the tube and nearly eipialling the orbicular petals : stamens 

 inchuh'.d : carpeKs T), puhescent: styh'H clongalr.l : ovuhvs l) to 8, HUspemlod : seeds 

 over a lino long. — I'acif. Iv. IJep. iv. 83, t. 5. 



Rare in the Sierra Nevada and tlie mountains eastward : al)ove Owen's i-ak(^ at 10,000 feet alti- 

 tude (iVuir); at NoMc/s I'ass, Sliasta Co. {Ncirbcrrn), ref.Mied l)y oveisij^Ll to ChawuUitia ; 

 W. Arizona and S. Nevada (Uiyclow, U'luekr) ; S. Utah {Mrs. Thomp^iu,,, Parry) ; Wyonung 

 Territory, Coulter. 



§ 3. Tall herbaceous perennial, with thrice pinnate leaves and no s(i/)nles : flowers 

 dia'cions, small, white, in nuvicruus flliforni jntnicled sj>ikes : pedicels in fruit 

 reflexed. — • AuuNcus. 



5. S. Arimcus, Linn. (OoAT's-liroARD.) Smooth, branching, 3 to 5 feet high : 

 leaves large ; leatlets thin, sparingly villous beneath, ovate to lanceolate, acuminate, 

 2 to 5 inches long, sharply and laciniatoly doul)ly toothed, the terminal ones broad- 

 est : panicle large and compound, pubescent : llowers a line broad, nearly sessile : 

 petals spatulate : filanu-nts long-exserted : cari>els 3 to 5, smooth, several-seeded. 



In ravines and along streams, Trinity and Shasta counties (Brewer), und northward to Alaska. 

 Also in tlio Allcgliunies, and in N. Asia and Kurope. 



§ 4. Low herbaceous ]>erennial, woody at hase, with simple entire leaves and no stip- 

 ules : flotvers perfect, white, in dense cylindrical spikes on scape-like stems. 

 — Petrophytum, Nutt. 



6. S. CEespitOSa, Nutt. Cespitose, on rocks, with simple or branching scape- 

 like steins : leaves rosulate on the short tufted branches of the woody spreacling 

 rootstock, oblanceolate or linear-spatulate, acute, silky on both sides, 2 to 12 lines 

 long ; those of the scape scattered and narrower : scape 2 to G inches high : llowers 



