342 COMPOSITE. ChcenacHs. 



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

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



§ 2. ACARPH^A. Pappus of deciduous and fimbriate palese, 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. — Acarphaa, Gray, PI. Fendl. 98; characterized anew in 

 Proc. Am. Acad. xix. 30. 



C. artemisiEefolia, Grat. A foot or two high, paniculately branched, furfuraceous- 

 pubescent, somewliat viscid, above glandulur-hirsute, especially the naked summit and 

 peduncles and involucre of the loosely cymose-paniculate heads : leaves 2-3-pinnately divided 

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

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

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

 late. — Proc. Am. Acad. x. 74, & Bot. Calif. 1. c. Acuiphaa wlemisuejiilia, Gray, PI. Pendl. 

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



C. tliysanocarpha, Gr.v.t. Slender and low annual, paniculately branched, viscid-puber- 

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

 leaves narrowly linear, entire ; involucre barely 3 lines iiigh, of few linear-oblong and vis- 

 cidulous bracts, 7-10-flowered : akenes clavate-obovate, obscurely angled : pappus about halt 

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

 briate quite down to tlieir unguiculate base, deciduous. — Proc. Am. Acad. xi.x. 30. — Sierra 

 Xevada in Kern Co. ■? California, at 9,800 feet, Rnthrock, no. 345. Apparently depauperate 

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



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

 — Herbs, of tlie Siurra Nevada and its continuations, viscid-pubescent and bal- 

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

 mostly sessile entire or dentate or pinnatifid leaves, and solitary or scattered laro-e 

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

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



* More or less floccose-woolly wlien young, and denudate in age : upper leaves reduced in size and 

 bract-lilce 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 lieads, 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, 

 viUose-lanate : rays very many, with linear ligule half-inch long : palea; of the pappus quad- 

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

 at summit. — { iray, Bot. Calif, i. 386. — S. California, in mountains of Sau Diego Co. Pawii 

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



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

 tose spatulate leaves (either entire or lyrately dentate, tardilv somewhat denudate) ■ the 

 flowering stems sometimes scapiform and mt.nocephalous, commonly sparseiN- leaved below 

 and bearing two or three slender pedunculate heads : involucre half-inch h'igli of mo.=tly 

 broadly lanceolate viscid-pubescent In-acts : rays little surpassing the disk-flowcn-s, s.imetimes 

 shorter, or even wanting, yellow or clianging to reddisli : pappus of conspicuous and silvery 

 quadrate erose-toothed palc^e, citlier nearly equal ur two r.athrr longer. — Proc. Am. Acad. 

 VI. 547, & Bot. Calif, i. 387. (Forms have been distributed under the names of II. Pi,rn/i 

 Gray, and H. cuUicarpha, S. Wats.m.) — S. E. California; volcanic hill south of Jlono L.ake' 

 Drnrer, low, scapiform, with large head. San .lacinto Mountain, San Diego Co 188-'' 

 Parish. Mohave com.try, San Bernardino Co., Parni, lS7i;, form with dentate or almost 

 pmnatifld leaves. Also a more leafy and branclied form, 2 feet high, with more deciduous 

 wool and rather longer rays, Parish. 



