Chcenactis. COMPOSITE. 341 



x. 74, & Bot. Calif, i. 390, with var. integrifolia, which is more slender, fewer-flowered, and 

 usually entire-leaved. C. glabriuscula, var. mec/aw/i/tiila. Gray, Jour. Bost. Nat. Hist. Soc., 

 vii. 146, not Pacif. R. Ref . Eastern California and adjacent Nevada, from Tejou to Car- 

 son, &c., Dr. Horn, Anderson, Lemmon. 



C. macrailtha, EATON. A span high, rather simply branched from the hase, canesceutlv 

 tomentulose, partly glabrate : leaves short, with linear or oblong-linear lobes usually ap- 

 proximate: heads 12-20-flowered, mostly short-peduncled, or the earlier on longer liahrd 

 peduncles from near the base of the stem : bracts of the involucre thinnish, more or less 

 tomeutose: corollas half to three-fourths inch long, narrow, externally puberulent, all alike; 

 the 5 short teeth linear-oblong, ascending or barely spreading : anthers whollv included in 

 the throat, the tips lanceolate : pappus of 4 linear-oblong palece barely half the length of the 

 corolla, and 2 to 4 very short cuucate-oblong ones, but these occasionally obsolete or wanting. 

 Bot. King Exp. 171, t. 18; Gray, Bot. Calif. 1. c. Hills in the desert region, W. Nevada 

 to S. Utah and the Mohave in California ; first coll. by Watson. 



4 -1 -f -1 Marginal corollas not distinctly larger than nor different from the others -(the 

 lobes if slightly larger still regular): bracts of many-flowered involucre linear or somewhat 

 spatulate, obtuse, sometimes one or two loose and shorter outer ones: pappus of 8 to 14 mostly 

 equal and large obtuse paleaa : biennial, perennial, or suffrutescent plants: ft. summer. Mucn.- 

 carphus, Nutt. 



C. Douglasii, HOOK. & ARX. Canescent with a fine somewhat floccose or pannose tomen- 

 tnm, or sometimes early glabrate, a span to a foot or more high from a biennial or more 

 enduring root : leaves mostly of broad outline and hipinuately parted into crowded short 

 and very obtuse divisions and lobes : heads from half to three-fourths inch long, in larger 

 plants several or numerous and corymbosely cymose : paleaj of the pappus from linear- 

 ligulate to narrowly oblong and from half to three-fourths the length of the corolla, or in 

 marginal flowers shorter and broader. Gray, Proc. Am. Acad. x. 74, & Bot. Calif. 1. c. 

 C. Ltuiif/lasti & C. ar.l,illc folia, Hook. & Am. Bot. Beech. 354; Torr. & Gray, Fl. 1. c. ; 

 Torr. in Stansb. Rep. t. 6. Hymenopappus Douylasii, Hook. Fl. i. 316; DC. Prodr. v. 658 ; 

 Macrocarphus Dumjlasii & A/, achillcafoUus, Nutt. Trans. Am. Phil. Soc. n. ser. vii. 376. 

 Dry plains and mountains, Montana to New Mexico, west to Washington Terr, and Cali- 

 fornia. From S. E. California, Palmer, an incomplete specimen of a peculiar large and 

 glabrate form, with sparser divisions to the leaves, and shorter spatulate-oblong paleas of 

 pappus. Very variable species. 



Var. alpilia. Dwarf, 3 to 5 inches high, consisting of a rosette or thick tuft of leaves 

 with very approximate divisions, and naked or scapiform stems, bearing mostly solitary heads, 

 surmounting the subterranean branches of a multicipital perennial caudex or rootstock. 

 Alpine region of the Rocky and Cascade Mountains in Colorado and Wyoming, of the 

 Sierra Nevada, California, and north to Washington Terr. Seems distinct from the fol- 

 lowing. 



C. NevadensiS, GRAY. Very dwarf, in small tufts surmounting filiform branches of sub- 

 terranean rootstocks, mostly growing in volcanic scoriic or ashes: leaves small (half to 

 barely inch long), densely white-woolly, crowded, obovate or flabelliform-cuneate in outline, 

 once or twice pinuatifid or parted into obovate or spatulate-linear lobes : peduncles inch or 

 less long, bearing a solitary rather narrow head. Bot. Calif, i. 391. Hymenopappus Neva- 

 densis, Kellogg, Proc. Calif. Acad. v. 46. Alpine region of the Sierra Nevada, California, 

 from Shasta and Lassen to the sources of the San Joaqnin, Kellogg, Aluir, Lemmon, &c. 



C. santolilioides, GREEXE, in herb. Subcaulescent perennial : leaves all crowded on 

 short tufted shoots from a slightly ligneous crown, white-tomentose, linear in outline, with 

 broadish rhachis thickly beset with small (line or so long) oblong obtusely few-lobed and 

 crispate divisions: peduncles scapiform, 4 to 6 inches high, simple or once or twice forked, 

 glandular and viscid : head half-inch high, rather narrow: pappus of 8 or 10 linear-ligulate 

 palete, a little shorter than the corolla. San Bernardino Mountains, above Bear Valley, 

 S. E. California, Parish. 



C. suffrutescens, GRAY. Canescently tomentose, a foot or more high from decumbent 

 woody stems : leaves pinnatelv parted into 5 to 7 narrowly linear entire or rarely l-2-tootln.-d 

 divisions : heads solitary or scattered, on slender peduncles, three-fourths inch high : pappus 

 of 10 to 13 linear or narrowly ligulate-oblong palea; a little shorter than the corolla, or in 

 the outermost flowers considerably shorter. Proc. Am. Acad. xvi. 100. California, on the 



