CATALOGUE. 187 



Greenland, and from Labrador to Alaska, and southward to Colorado and 

 California. Havallah range, Nevada ; 5,000 feet elevation ; June. (656.) 



Arnica Chamissonis, Lessing. Hirsute-can escent ; leaves oblong-lance- 

 olate, acute or rather obtuse, entire, rarely slightly denticulate, 3-5-nerved ; 

 radical and lower cauline ones narrowed into short petioles, the rest (2-6 

 pairs) sessile ; heads smaller than in the last ; involucres finely villous-pubes- 

 cent ; achenia minutely hirsute. — Very near the last, into which Dr. Gray 

 {PI Hall 8f Harbour, p 68) admits that it passes, but it is more leafy, and 

 the leaves are paler or somewhat canescent. Both these species are united 

 with A. montana'va. Dr. Hooker's " Distribuiion of Arctic Plants.'" Sub- 

 arctic America and Alaska to the • Saskatchewan ; Oregon ; California and 

 Colorado ; Carson City, Anderson. On the Truckee River, Nevada, and in 

 Parley's Park and Bear River Canon, Utah ; 4-8,000 feet elevation ; 

 July. (657.) 



Aenica mollis. Hook. Mountains of New Hampshire and Northern 

 New York ; Lake Superior, and Rocky Mountains of British America to 

 Colorado and California. A. amplexicaulis, Nutt., from Oregon diifers in 

 scarcely any respect. East Humboldt Mountains and Uintas, 6,600-10,000 

 feet elevation ; July, August. (658.) 



Aenica latipolia, Bon gard. Slightly hirsute-pubescent ; stems nearly 

 1° high from a slender, creeping caudex ; leaves thin, ovate, acute, coarsely 

 and sharply toothed ; the radical on long slender petioles ; the cauline in 2-3 

 pairs, all but the lowest closely sessile by a cordate base ; heads solitary, or 

 with 1-2 additional ones from the uppermost axils ; involucre hairy at the 

 base, glandular above, the scales lanceolate, acute ; achenia nearly smooth. — 

 Alaska to Oregon, California, Utah, and the mountains of Colorado. Wah- 

 satch Mountains ; 9-9,500 feet elevation ; July. (659.) 



Aenica coedipolia, Hook. "Woolly-pubescent, in age becoming nearly 

 smooth ; caudex slender, creeping ; stems 6-14' high ; leaves thin, ovate, 

 entire, denticulate or even sharply toothed ; the radical ones roundish, 

 deeply cordate, obtuse, on slender petioles ; the cauline in 1-3 pairs, on 

 shorter petioles, less deeply cordate and more acute; the highest pair sessile; 

 heads 1-3, on long peduncles, rather large ; involucres villous-pubescent, the 

 scales lanceolate, acute ; achenia hirsute-pubescent. — Saskatchewan to Oregon 

 and Colorado; California, (Var. discoidea, Gray.) Frequent in the East 



