Chrysopsis. COMPOSITE. 123 



lines high ; its bracts commonly strigulose-caneseent, sometimes almost smooth, acute : 

 akenes oblong-obovate, villous : outer pappus setulose-squainellate. — Amelias villosus, Pursh, 

 Fl. ii. 564. Diplopappus villosus & D. luspidus, Hook. Fl. ii. 22. Chrysopsis villosa, hispida, 

 foliosa, mollis, & sessiliflora, Nutt. Trans. Am. Phil. Soc. 1. c. ; Torr. & Gray, 1. c. ; also 

 C. canescens, Torr. & Gray, C. echioides, Benth. Bot. Sulph. 25 & PI. Hai'tw. 316. — Prairies, 

 plains, and other open grounds, from Illinois and W. Alabama north to Saskatchewan, south 

 to Arizona, and west to British Columbia and the coast of California ; in various forms. 

 The typical eastern and northern plant is rather large, with cinereous and roughish but not 

 canescent pubescence. Westward, extending to the southern part of California, it usually 

 becomes more canescent and villous as well as hirsute and hispid ; the size and fulness 

 of the heads greatly varying. The more marked but quite unlimited forms are the fol- 

 lowing : — 



Var. hispida, Gray. Small and low, with hirsute and hispid pubescence, not canes- 

 cent: heads particularly small: involucre not canescent, sometimes glabrous. — Proc. Acad. 

 Philad. 1863, 65. Diplopappus hispidus, Hook. Fl. ii. 22. Chrysopsis hispida, DC. Prodr. 

 vii. 279 ; Nutt. 1. c. — Saskatchewan to Idaho, south to W. Texas, Nevada, and Arizona. 

 And forms between this and the next in California. 



Var. viscida. Low : leaves small, oblong to spatulate, green, sparingly if at all 

 hispid, not rough, but viscid-hirtellous or with viscid points, and the involucre commonly 

 viscidulous. — Utah and Arizona, in the mountains, Jones, Greene, Pringle, Lemmon. 



Var. discoidea. Heads destitute of rays : involucre somewhat canescent : otherwise 

 nearly as var. hispida. — Canons, W. Montana, Watson. 



Var. stenoph^lla, Geav. Low and rough-hispid, rigid : leaves spatulate-linear, 

 only a line or two wide : heads small. — PI. Lindh. ii. 223. — Crevices of rocks, W. Texas, 

 Lindheimer, and S. W. Arkansas, Bigelow. 



Var. canescens. Wholly canescent with short and appressed sericeous pubescence, 

 and with some spreading hispid bristles along the stem and margins of the narrow mostly 

 oblanceolate leaves : heads small : involucre also canescent : outer pappus less distinct. — 

 Aplopappus? (Leucopsis) canescens, DC. Prodr. v. 349. Chrysopsis canescens, Torr. & Gray, 

 Fl. ii. 256. — Texas, Berlandier, Drummond, Wright, Lindheimer, &c. Stems a foot, some- 

 times " 2 to 5 feet," high ; very leafy and branching. 



Var. foliosa, Eaton. Canescent witli appressed sericeous pubescence, mostly soft 

 and destitute of hispid bristles ; but stem often hirsute or villous : leaves short, oblong or 

 elliptical: heads small, rather numerous and clustered. — Bot. King Exp. 164. C. foliosa & 

 C. mollis, Nutt. 1. c. C. foliosa, Gray, PI. Wright, i. 99, & ii. 81, a small-leaved and some- 

 what hispid form, between this and var. hispida. — Rocky Mountains of Wyoming to Utah 

 and Arizona. 



Var. Rutteri, Rothrock. Most like the preceding, equaUy sericeous-canescent with 

 usually longer soft hairs : heads of double the size, fully half-inch high and wide, solitary or 

 few in a cluster, foliose-bracteate : rays 30 to 40, half-inch long. — Wheeler Rep. vi. 142. 

 C. foliosa, var. sericeo-villosissima, &c, Gray, PI. Wright, ii. 81. — S. Arizona, Wright, Rothrock, 

 Lemmon. — Seemingly the most distinct form of all; but connected with the eastern type by 

 one with slightly canescent leaves, Colorado, Greene. 



Var. sessiliflora. From hirsute and hispid or greenish to villous-canescent : leaves 

 oblong or spatulate : heads mostly large, solitary and foliose-bracteate at base : outer pappus 

 more conspicuous and squameUate. — C. (Phyllotheca) sessiliflora, Nutt. Trans. Am. Phil. Soc. 

 1. 1. 317 ; Gray, Bot. Calif, i. 309, partly, especially var. Bobmderi. C. Bolanderi, Gray, 

 Proc. Am. Acad. vi. 543, which is a well-developed form. — California, near the coast, from 

 Mendocino Co. to San Diego and Arizona. Disk-corollas in the bud tipped with some 

 scattered very slender hairs. 



Var. echioides. A branching form, with rather numerous and naked heads of small 

 size, and usually small leaves, commonly canescently hispid, sometimes greener : passes into 

 var. foliosa, var. hispida, &c. — C. echioides, Benth. Bot. Sulph. 25 (from Bodegas, a, form 

 nearer the foregoing) & PI. Hartw. 316, form with small and scattered heads. C. sessili- 

 flora, var. echioides, Gray, Bot. Calif, i. 309. — California, common from the Sacramento 

 southward to Arizona. 

 # # * Leaves not nervose, somewhat veiny: in volncre hemispherical : akenes turgid-obovate and 



flatfish, indistinctly 10-nerved, minutely pubescent: outer pappus paleolate and conspicuous; 



inner not very copious : root annual. 



