398 COMPOSITE. 



obtuse pearly white or pinkish tips: bristles of pappus in sterile flowers 

 dilated into a broad flat tip.— Subalpine in the Sierra Nevada from near 

 Yosemite northward. 



2. A. alpina, Gsertn. 1. c. ; Linn. 1. c. 856, under GnaphoJium. Less 

 gregarious: flowering stems 14 in. high, bearing a close cluster of few 

 subsessile heads: bracts of involucre livid-brown and thin-scarious 

 acutish in the fertile but obtuse in the sterile heads; bristles of pappus 

 in the latter with narrower and less abrupt tips. — In the Sierra at alpine 

 elevations. 



-1^ -^ Steins clustered or matted, hut not stolon if erous. 



3. A. dimorpha, T. & G. Fl. ii. 431 (1843); Nutt. Trans. Am. Phil. Soc. 

 vii. 405 (1841), under Gnaphalium. Low and matted, only 1—2 in. high: 

 leaves spatulate, silky-woolly, crowded on the branches of the caudex: 

 heads solitary, terminating short peduuculiform stems: bracts of the 

 turbinate involucre brownish, those of the sterile heads ovate-lanceolate, 

 of the fertile narrower and acuminate: acheue with a miniite pubescence 

 of short bi-uncinate hairs; pappus of sterile flowers barbellate at summit 

 but scarcely dilated. — Foothills of the Sierra along our eastern borders. 



4. A. argentea, Benth. PI. Hartw. 319 (1849). Closely silky-woolly, 

 the slender stems 8—16 in. high: lowest leaves spatuhite, 4—5 lines 

 wide; those of the stem linear to linear-subulate: heads small, numerous 

 in a compound cyme: inner bracts of pistillate-involucre obtuse: acbenes 

 glandular-papillose; male pappus with petaloid-dilated tips.— Subalpiue 

 from Yosemite northward. 



5. A. inicrocepliala, Gray, Proc. Am. Acad. x. 74 (18741 Slender, 

 silvery-woolly, 4—10 in. high: lower leaves spatulate, upper small and 

 linear: heads many, very small, loosely pauicled: bracts of involucre 

 with scarious tips inconspicuous: achenes glandular; tips of bristles of 

 male pappus much dilated. — Eastern slope of the Sierra northward. 



* * Sujfrviescenl; stems eijuahhj leafy. 



6. A, Geyeri, Gray, PI. Fendl. 107 (1849). Stoutish and rigid, 4—8 

 in. high, densely white- woolly, leafy to the summit, the leaves oblance- 

 olate, 1 in. long or less: heads cymose or subspicate, rather large; bracts 

 of involucre with conspicuous usually rose-red tips: bristles of the male 

 pappus moderately clavate. — Dry hills, east of the Sierra northward. 



34. ANAPHALIS, De Cavdolle. Perennial equably leafy simple- 

 stemmed herbs, mostly dioicous and the flowers yellow. Heads in a 

 cymose corymb. Bracts of the campanulate involucre with short ap- 



