IQ4^ BOTANY. 



above; leaves somewhat rigid, glaucous and punctate-reticulated ; the radical 

 ones spatulate-lanceolate, narrowed into a petiole, dentate or incised ; the 

 cauline mostly oblong, sessile and partly clasping, finely toothed or spinulose- 

 serrate; heads numerous ; involucres sub-globose, 6" broad; the scales very 

 rigid, closely appressed, but with very long reflexed or squarrose subulate 

 points ; rays numerous, rather narrow ; pappus of 2-4 very rigid deciduous 

 bristles or awns.— Arctic America to Nebraska, California, New Mexico and 

 Texas. Wahsatch Mountains and Salt Lake Valley; 4,500-7,000 feet 

 elevation; August. (582.) 



Var. GRANDIFLOEA, Gray. PI. Wright., 1. 98. Heads much larger; 

 achenia somewhat four-sided, compressed. California and New Mexico. 

 Ruby Valley, Nevada; 6,000 feet elevation; September. The same as 



Fremont's plant. (583.) 



Chrysopsis villosa, Nutt. Saskatchewan to Oregon and California, 

 and eastward to Illinois, Kentucky and Texas. A most variable species, to 

 which are referred C. canescens and echinoides, besides the following. — Var. 

 HISPIDA, Gray. Proc. Acad. Philad., Mar. 1863, p. 65. (C. hispida, DC.) 

 Hispid with rigid whitish hairs, and exceedingly scabrous; leaves rigid, 

 smaller, and very narrow. — Nearly the same form as Lindheimer's 631, but 

 with fewer long spreading hairs, and the leaves are acutely lanceolate. 

 Mouth of Cottonwood Canon, Utah; 5,000 feet elevation; July. (584.) 



Another form of this variety, with scarcely any spreading hairs, the whole 

 plant copiously resinous-glandular, was found at Fremont's Pass in the East 

 Humboldt Mountains, and at the City of Eocks in Southeastern Idaho ; 

 6-6,500 feet elevation ; August-October. (585.) 



Var. FOLiosA. {C.foliosa, Nutt.) Stem hirsute with soft spreading 

 white hairs, very leafy ; leaves obovate-oblong, 15-20" long, 4" broad, softly 

 canescent and silky-villous, the lower part somewhat hirsute like the stem ; 

 heads in a large open corymb ; involucre of linear-subulate canescent scales. 

 Scarcely distinguishable from C canescens, but whiter and more silky than 

 C. villosa. Salt Lake Valley, and along the western foot of the Wahsatch ; 

 4,500-5,000 feet elevation ; July, August. (586.) 



Laphamia^ Stansburii, Gray. PL Wright., 1. 101. Torrey, Stansh. 

 ■Rep., (ed. 2,) p. 389, t. 7. Puberulent ; stems 6-12' high, many from a stout 



' LAPHAMIA, Gkay. PI. Wright. 1. 99. Head sevcral-many-flowered ; rays few, pistillate, fertile, 

 the ligule oval or oblong, 2-3-tootlied, scarcely exceediug the disk, sometimes none ; disk-flowers perfect, 



