COMPOSITE, 379 



5. C. flla^iiiifolia, Nutt. Trans. Am. Phil. Soc. vii. 290 (1840); H. & 

 A. Bot. Beech. 146 (1833), under Aster. Suffrutesceut, erect, 2 ft. high or 

 more, pauiciilately branched above, the branches and foliage woolly: 

 leaves scattered, spatnlate-oblong, mucronate, the lowest serrate toward 

 the apex: heads small; bracts of the turbinate involucre merely gran- 

 ular, not at all woolly or glandular: rays few, rather short. — Hills of 

 Monterey Co. to Mariposa, thence southward. 



. 6. C. vir^ata, Benth. Bot. Sulph. 23 (1844). Taller than the last, 

 often 3 ft. high; heads far more numerous, forming a virgate panicle: 

 leaves from narrow-obovate to oblanceolate, serrate: pedicels and invo- 

 lucres densely beset with viscid short-stalked glands.— Abundant along 

 the seaboard southward; flowering later than C. filagim folia. 



21. MACH^RANTHERA, Nees. Annuals, biennials or short-lived 

 perennials, glabrous or with more or less often glandular pubescence, 

 the leaves usually incised or pinnatifid. Involucres mostly somewhat 

 turbinate; the firm bracts imbricated, numerous, glandular, and with 

 recurved or squarrose herbaceous tips. Bays numerous, purple, or 

 sometimes wanting. Disk-corollas yellow, slender-tubular, with 5 short 

 erect teeth. Style-tips subulate or narrower, connivent. Achenes little 

 compressed, strongly striate, pubescent. Pappus bristly or capillary, 

 brownish, scabrous. — Gentis more related to Corethrogyne than to Aster. 



1. M. Shasteiisis, Gray, Proc. Am. Acad. vi. 539 (1865). Stems 

 several from a perennial i-oot, erect, 6 — 10 in. high, cymose-paniculate; 

 herbage cinereous-puberulent, the inflorescence granular: lowest leaves 

 oblanceolate, petiolate, acute, the cauline oblong, obtuse, all entire: 

 bracts of the turbinate involucre rather few, coriaceous, erect, only the 

 outer ones with short herbaceous tips, these scarcely spreading: rays 

 few, red-piirple: achenes long and narrow. — Mountains of Plumas Co., 

 Mrs. Austin, and northward. 



2. M. montana, Greene, Pitt. iii. 60 (1896). Habit of the preceding, 

 but larger, more densely puberulent; leaves narrower, strongly serrate- 

 toothed; heads more racemose; turbinate involucre of more numerous 

 and closely imbricated bracts, all with subulate herbaceous squarrose- 

 recurved tips: rays blue or purplish. — From the vicinity of Mono Lake 

 eastward to the Rocky Mts. 



3. M. leucantjiemifolia, Greene, 1. c. 61; also Eryth. iii. 119 (1895), 

 under Aster. Apparently only biennial, a foot high, loosely and almost 

 divaricately branched; herbage pale but puberulent: lowest leaves 

 spatulate-obovate, coarsely and deeply toothed, the teeth spinescent, the 

 cauline similar but small : bracts of the turbinate involucre with 



