324 BOTANT. 



and west to Oregon. Washoe Mountains and Truckee Valley, Nevada ; at 

 City of Rocks in Southeastern Idaho, and in the Wahsatch and Uintas ; 

 4-7,000 feet altitude. This is the prevalent western form, often collected, 

 but variously referred. It is 422 Fremont, (1845,) 811 Fendler from New 

 Mexico, 215 Gayer, 340 Parry, and 519 Hall & Harbour from Colorado, 

 (the last called A. rubra by Kegel,) 530 Vasey, 104 Anderson, &c. It 

 must include Hegel's A. serrulata, Var. rugosa, for all the locaKties but per- 

 haps California. (1,090.) 



SALICACE^. 



Salix longipolia, Muhl. From the Northern States and Canada to 

 the Arctic Circle and the Pacific ; in Arkansas, Texas, New Mexico, and 

 California. The most common willow of Nevada and Utah, usually in dense 

 clumps, 3-8° high ; stems erect and rarely exceeding 1' in diameter, with 

 grayish bark ; very variable in pubescence, size of the leaves, &c. This 

 number includes specimens having the fertile aments 1' long, densely 

 crowded with glabrous capsules, terminal (or often apparently lateral) and 

 mostly solitary upon the extremities of the branchlets ; leaves pubescent, 

 becoming glabrate, 2-3' long and 2-3" wide. 4-6,000 feet altitude ; May- 

 August. (1,091.) 



Another common form has the catkins in clusters of 4-8 at the extrem- 

 ities of the branches, the fertile ones 1-2J' long, densely crowded ; cap- 

 sules ovate-conic, villous-pubescent and nearly sessile ; leaves 2-4' long, 2-7" 

 wide, becoming glabrous. (1,092.) 



A rarer form, approaching S. Hindsiana, Benth., was collected on sandy 

 foot-hills near Carson City, Nevada, with the fertile aments solitary and ter- 

 minal upon the short leafy branchlets, about J' in length, very loosely fruited; 

 capsules long-conical, glabrous, the pedicel exceeding the gland; the still 

 rather young leaves less than an inch long, 1" wide ; 3° high, divaricately 

 branching, with slender virgate branchlets and yellow bark. (1,093.) 



Var. AEGYEOPHTLLA, Nutt. DC. Prodr. 16. 2. 214. Leaves and capsules 

 covered with a glistening silvery tomentum. — A common form, with the 

 silky tomentum more or less abundant ; aments solitary and terminal, short, 

 i-V long, and rather densely flowered ; leaves very variable, lJ-5' long and 

 1-6" wide. (1,094) 



Salix coedata, Muhl., nearly Var. angustata. And. The species is 



