Blennospcrma. COMPOSITiE. 343 



Var. pygmeea. Depressed, rising ouly 2 inches high, the head subsessile in the tuft 

 of leaves : niys saffron or rose-colored. — San Bernardino Co., on the summit of Greyback 

 Mountain, Leinmon, W. G. Wright, and Bear Valley, Parish. 



H. algida, Gray. A span or two high from a deep perennial rootstock, the villous or cot- 

 tony wool caducous, viscid pubescence remaining : stem simple, stout, terminated by a solitary 

 short-peduucled large head : leaves linear-liugulate, irregularly dentate, sometimes with 

 large .salient teeth; lower crowded (2 to 5 inches loug, quarter to half inch wide), up]ier 

 gradually smaller and sparser : involucre almost inch high and broad ; its bracts linear, 

 attenuate-acute, lax, villose-lanate and viscid : rays very uumerous, linear, nearly half-inch 

 long, yellow : pajjpus short, not exceediug the breadth of the akene, etiualled by its hairs ; 

 the palea3 deeply fimbriate-lacerate. — Proc. Am. Acad. vi. 547, Bot. Calif, i. 386. — Cali- 

 fornia, ou the higher summits of the Sierra Nevada, from Mount Dana southward. Brewer, 

 Bohnidcr, Muir, ou Mount Whitney up to 13,700 feet, Rvtitruck. 



H. nana, Gray. A spau high from loug branching rootstocks rising through volcanic ashes 

 and scoriaj, villou.s-lanate when young, viscid-pubescent : leaves crowded around base of the 

 thickish (inch or two long, or sometimes very short) monocephalous peduucle, oblongspatu- 

 late, pinuatifid or incised, mostly tapering into a margined petiole : involucre half-inch or 

 more high, of lanceolate bracts : rays about 30, yellow, broadly linear, nearly half-inch long : 

 paleaj of the pappus (either broad or apparently sj)litting into narrower ones) usually longer 

 than the breadth of tlie akene, equalled by its villous hairs, incisely or fimbriately lacerate. 

 — Pacif. E. Kep. vi. 76, t. 13, Bot. Calif. 1. e. — Volcanic peaks of the Cascade Mountains, 

 Oregon, Neicberri/, Cusic/c, to Washington Terr., Siiksdorf. 



Var. Larseni, Gray, Bot. Calif. 1. c. More woolly even in age, and leaves somewhat 

 scattered on tlie flowering stems, even up to the head : rays smaller.. — California, in volciinic 

 ashes on jieaks of northern part of the Sierra Nevada, such as Shasta and Lassen ; first coll. 

 by Lemmon and Larsen. 



* * Apparently quite destitute of iloccose wool from the first, but with some long and soft many- 

 jointed and viscidiilous hairs: stems mostly simple, equably leafy to the top, bearing solitary or 

 somewhat raceniosely disposed short-pedunculate heads: paleie of the pappus conspicuous, 

 oblong or narrower, the two over the angles longer. 



H. heterochroma, Gray. Rather stout, sometimes over 2 feet high from an annual root : 

 leaves olilong, saliently dentate : involucre two-thirds or three-fourths inch high, of linear- 

 lanceolate attenuate-acute bracts: rays very numerous, 3 or 4 lines long, rose-purple, some- 

 times inconspicuous or obsolete : tube of disk-corollas hirsute : shorter paleaj of the pappus 

 truncate-lacerate. — Proc. Am. Acad. vii. 369, & Bot. Calif. 1. c. — California, from tlie Yo- 

 semite, Bolander, to the mountains of San Bernardino Co., Lemmon, Parish. 



H. brevif olia, Gray, 1. c. Slender, a foot high fi-om an annual or possibly perennial root, the 

 stem or simple branches bearing a solitary comparatively small and narrow head : leaves 

 small (the largest inch and a half long), spatulate-oblong, denticulate : involucre half-inch 

 high, of linear rather loose bracts : rays only 10 or 12, 3 or 4 lines loug, light yellow : paleaj 

 of the ])appus rather entire. — California, along the Merced in and near the Yosemite 

 Valley, Bolander, &c. 



155. TRICHOPTfLIUM, Gray. (0ptc?, rpixo's, hair, and tttiAov, feather 

 or phiniage, the pap23us-pa]ea3 feathery-dissected.) — Single species, yellow-fiow- 

 ered winter annual ; fl. spring. 



T. incisum, Gray. Diffusely branched, low and spreading, loosely floccose-woolly, also 

 somewhat pubescent and glandular : leaves oblong-rhomboidal or cuneate-lanceolate, incisely 

 and acutely dentate, alternate or the lower opposite : heads .scarcely half-inch high, on slen- 

 der peduncles terminating stem and branches. — Bot. Mex. Bound. 97, Pacif. R. Rep. v. t. 5, 

 & Bot. Calif, i. 395. Psathi/rotes incisa, Gray, PI. Thurb. 322. — Arid <listrict of the 

 Mohave, Lower Colorado, and Gila, W. Arizona and S. E. California; first coll. by Fremont. 



156. BLENNOSPfiRMA, Less. (BAewa, mucus, a-irepfxa, seed; the 

 akenes developing copious mucus when wetted; that is, the club-shajied papillae 

 then swell up through imbibition, open at the aj^ex, or else split into two valves, 

 and emit a pair of uncoiliug filaments of extreme tenuity, in the manner of 



