342 COMPOSITE. Chasnactis. 



\ 



rocky banks of the Sacramento, below Mount Shasta, Lemmon (perhaps a mistake as to 

 habitat) ; S. E. California, south of San Jaciuto Mountains, Parish. 



2. ACAKPH^EA. Pappus of deciduous and fimbriate paleae, or wanting : 

 akenes obovate- or linear-clavate, hardly angled, blackish : involucre viscid : 

 corollas whitish or ochroleucous, all alike or nearly so, the marginal not obviously 

 ampliate: annuals. Acarphcea, Gray, PL Feudl. 98; characterized anew in 

 Proc. Arn. Acad. xix. 30. 



C. artemisieefolia, GRAY. A foot or two high, paniculately branched, furfuraceous- 

 pubesceut, somewhat viscid, above glandular-hirsute, especially the naked summit and 

 peduncles and involucre of the loosely cymose-paniculate lieads : leaves 2-3-piunately divided 

 or parted into short linear or oblong lobes : involucre broadly campanulate, half-inch high, 

 many-flowered ; its bracts lanceolate-linear, acute : akenes linear-clavate, flattened, hardly at 

 all angled, the sides minutely impressed-striate ; epigynous disk small and obscurely annu- 

 late. Proc. Am. Acad. x. 74, & Bot. Calif. 1. c. Ai-nr/i/ma artemisi.tcfolia, Gray, PI. Fendl. 

 98, & Bot. Mex. Bound. 95, t. 32. San Diego Co., California; first coll. by Coulter. 



C. thysanocarpha, GRAY. Slender and low annual, paniculately branched, viscid-puber- 

 uleut, with some early deciduous villosity, sparsely leafy up to the subsessile small heads : 

 leaves narrowly linear, entire : involucre barely 3 lines high, of few linear-oblong and vis- 

 cidulous bracts, 7-10-flowered : akeues clavate-obovate, obscurely angled : pappus about half 

 the length of the corolla, of 8 or 9 nearly equal thin spatulate paleu.- which are erosely fim- 

 briate quite down to their unguiculate base, deciduous. Proc. Am. Acad. xix. 30. Sierra 

 Nevada in Kern Co. 1 California, at 9,800 feet, Ruthrock, no. 343. Apparently depauperate 

 or unseasonable specimens of a peculiar plant ; coll. Sept. 



154. HtJLSEA, Torr. & Gray. (The late Dr. G. W. ffulse, U. S. Army.) 

 Herbs, of the Sierra Nevada and its continuations, viscid-pubescent and bal- 

 samic-scented, most of the species when young floccose-woolly ; with alternate 

 mostly sessile entire or dentate or pimiatifid leaves, and solitary or scattered large 

 heads of yellow flowers, or rays sometimes purple ; in summer. Bot. Mex. 

 Bound. 98*; Pacif. R. Rep. vi. 77, t, 13 ; Bot.. Calif, i. 385. 



* More or less floccosc-WDolly when young, and denudate in age: upper leaves reduced in size and 

 bract-like on the naked flowering branches or peduncles : root perennial, or in the first species per- 

 haps biennial. 



H. Californica, TORR. & GRAY, 1. c. Robust, 2 feet or more high, leafy, bearing several 

 paniculately disposed heads, when young whitened by long and soft loose wool : leaves 

 entire or nearly so ; lower spatulate or Ungulate, uppermost ovate-lanceolate to linear : invo- 

 lucre two-thirds inch high and broad ; its bracts very numerous, linear, gradually acute, 

 villose-lanate : rays very many, with linear ligule half-inch long : paleaj of the pappus quad- 

 rate-oblong and somewhat equal, or the two over the principal angles longer, erose-denticulate 

 at summit. Gray, Bot. Calif, i. 386. S. California, in mountains of San Diego Co., Parry, 

 and (near Campo, June, 1880), Parish, G. R. Vasey. 



H. vestita, GRAY. Commonly a foot or less high from a rosette of pannosely white-tomen- 

 tose spatulate leaves (either entire or lyrately dentate, tardily somewhat denudate) ; the 

 flowering stems sometimes scapiform and nionocephalous, commonly sparsely leaved below 

 and bearing two or three slender pedunculate heads : involucre half-inch high, of mostly 

 broadly lanceolate viscid-pubescent bracts : rays little surpassing the disk-flowers, sometimes 

 shorter, or even wanting, yellow or changing to reddish : pappus of conspicuous and silvery 

 quadrate erose-toothed paleas, either nearly equal or two rather longer. Proc. Am. Acad. 

 vi. 547, & Bot. Calif, i. 387. (Forms have been distributed under the names of //. Purri/i, 

 Gray, and //. callicarpha, S. Watson.) S. E. California; volcanic hill south of Mono Lake, 

 Brewer, low, scapiform, with large head. San Jacinto Mountain, San Diego Co., 1882, 

 Parish. Mohave country, San Bernardino Co., Parry, 1876, form with dentate or almost 

 pinnatifid leaves. Also a more leafy and branched form, 2 feet high, with more deciduous 

 wool and rather longer rays, Parish. 



