Blennosperma. COMPOSITE. 343 



Var. pygIYJ.sea. Depressed, rising only 2 inches high, the hend subsessile in the tuft 

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

 Mountain, Lemmon, 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 liuear-lingulate, irregularly dentate, sometimes with 

 large salient teeth; lower crowded (2 to 5 inches long, quarter to half inch wide), upper 

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

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

 long, yellow : pappus short, not exceeding the breadth of the akene, equalled by its hairs ; 

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

 fornia, on the higher summits of the Sierra Nevada, from Mount l)ana southward, Brewer, 

 Bo/ander, Muir, on Mount Whitney up to 13,700 feet, Rothroi-k. 



H. nana, GRAY. A span high from long branching rootstocks rising through volcanic ashes 

 and scoriae, villous-lanate when young, viscid-pubescent : leaves crowded around base of the 

 thickish (inch or two long, or sometimes very short) monocephalous peduncle, oblong spatu- 

 late, pinnatifid 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 splitting into narrower ones) usually longer 

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

 Facif. R. Rep. vi. 76, t. 13, Bot. Calif. 1. c. Volcanic peaks of the Cascade Mountains, 

 Oregon, Neirherri/, Cusick, to Washington Terr., Siiksdivf. 



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

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

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

 bv Lemmon and Larsen. 



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

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

 somewhat racemosely disposed short-pedunculate heads: palese 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 oblong, 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 palea? of the pappus 

 truncate-lacerate. Proc. Am. Acad. vii. 3fi9, & Bot. Calif. 1. c. California, from the Yo- 

 semite, Bo/ander, to the mountains of San Bernardino Co., Lemmon, Parish. 



H. brevifolia, GRAY, 1. c. Slender, a foot high from 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-obloug, denticulate : involucre half-inch 

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

 of the pappus rather entire. California, along the Merced in and near the Yosemite 

 Valley, Bolander, &c. 



155. TRICHOPTlLIUM, Gray. (0p& Tpi X * hair, and im'Aw, feather 

 or plumage, the pappus-palere feathery-dissected.) Single species, yellow-flow- 

 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. Psatht/rotes t'ncisa, Gray, PI. Thnrb. 322. - Arid district of the 

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



156. BLENNOSPERMA, Less. (BAewz, mucus, a-n-ep/jLa, seed; the 

 akenes developing copious mucus when wetted; that is, the club-shaped papilla' 

 then swell up through imbibition, open at the apex, or. else split into two valves, 

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



