300 COMPOSIT^E. Brickdlia. 



B. OBLONGIFOLIA, Niitt. , an herb, with lanceolate-oblong entire and sessile leaves, a few ter- 

 minal rather large and many-flowered heads, and minutely glandular akenes, occurs along rivers 

 in Oregon, and may be expected in the northei'n jiart of the State. 



B. LiNiFOLiA, Eaton, like the preceding but with rather narrower leaves, fewer heads, and mi- 

 nutely hispid akenes, growing in Arizona and Nevada, may reach California, but is less likely. 



B. HASTATA, Benth., a canescent tomentose species, with opposite hastately 3-lobed leaves, 

 and corymbose 12-flowered heads, has been found only far down in Lower California. 



B. CouLTERi, Gray, with barely pubescent opposite hastate-triangular and sparsely toothed 

 leaves, and long-peduncled about 12-flowered heads, is known only by a specimen in Coulter's 

 collection, wliich may not have been collected within the State. Several plants of his "Califor- 

 nia " collection were gathered only in Arizona, or east of the Eio Colorado. 



* Heads about an inch long : scales of the involucre obtuse : plant ivoolly. 



1. B. incana, Gray. Plant probably woody at base, white at least when 

 young with a close soft wool : leaves of the branches ovate or cordate, nearly 

 entire, sessile, alternate (small), becoming naked and green with age : heads soli- 

 tary terminating tlie loose branches, peduncled, very many-flowered : scales of the 

 involucre in 3 or 4 ranks, the outermost roundish, the inner linear-oblong : akenes 

 silky. — Proc. Am. Acad. vii. 350. 



Providence Mountains, San Bernadino Co., Dr. Cooper. 



* * Heads half to three quarters of an inch long : plants minutely pubernlent or pu- 

 bescent, and more or less glandular or viscid. 



2. B. grandiflora, Nutt. Herbaceous, 2 or 3 feet high, simple or corym- 

 bosely branching, not viscid : leaves cordate-triangular, acute or acuminate, thin- 

 nish, coarsely serrate, 2 or 3 inches long, on slender petioles ; the lower opposite, 

 uppermost alternate : heads numerous in a naked corymbose cyme : scales of the 

 involucre thin, mostly acute : akenes nearly glabrous. 



Rocky banks of streams in the Sierra Nevada (Yosemite Valley, &c.) ; and eastward through 

 the Rocky Mountains. Notwithstanding the name of this species, the heads are only three 

 fourths of an inch long, or often shorter, cylindraceous, and less than half an inch broad. 



3. B. Californica, Gray. Shrubby at base, 2 to 3 feet high, paniculately 

 branched : leaves alternate, ovate, somewhat triangular, or sometimes slightly cor- 

 date, mostly obtuse, irregularly crenate-toothed, 3-ribbed from the base, veiny, 

 roughish (an inch or so in lengfth), on short petioles : heads spicate or racemose 

 along the leafy branches, half an inch long, 10- 15-flowered : scales of the involu- 

 cre with thinnish mostly obtuse straight tips. — PI. Pencil. 64. {Bulbostylis, Torr. 

 & Gray, PI. ii. 79.) B. Wrightii, Durand & Hilgard, Pacif. E. Pep. v. 8. 



Dry hillsides, from Mendocino Co. nearly through the State, and eastward at least to Utah. 



4. B. microphylla, Gray, 1. c More branched than the last, viscid and 

 glandular : leaves smaller and with acute teeth ; those of the branches almost ses- 

 sile, half an inch long or less : heads clustered at the ends of diverging branchlets, 

 smaller : scales of the involucre rigid, all but the innermost with squarrose-spread- 

 iug herbaceous tips. — Bulbostylis microphylla, Nutt. 



Teliae Peak, near Lake Tahoe (Lemmon) ; adjacent parts of "Western Nevada {Torrcy) ; thence 

 north and east to Oregon and Utah. 



4. ADENOSTYLES, Cass. 



Head few - many-flowered. Involucre of a single series of erect scales, or some- 

 times with one or two smaller and lax exterior ones additional. Receptacle naked, 

 flat. Corollas dilated above the slender tube, the 5 lobes spreading. Branches of 

 tlie style somewhat thickened upward. Akenes terete, 10-striate, glabrous. Pap- 

 pus of very copious soft and wliite capillary bristles. — Perennial herbs, with simple 

 stems, alternate cordate or reniform leaves, mostly on long petioles, and corymbose 

 heads of flesh-colored, white, or cream-colored flowers. — Benth. & Hook. Gen. ii. 

 247. 



