CATALOGUE. 327 



Salix reticulata, L. DC. Prodr. 16. 2. 301. Decumbent, the 

 branches leafy at the summit ; ament terminal, very long peduncled, densely 

 flowered, narrow-cylindric ; peduncle leafy ; scales yellowish-pink, rounded- 

 ovate ; capsules oval-ovate, sessile, hoary-tomentose ; nectary somewhat cup- 

 shaped, surrounding the base of the capsule and often exceeding it ; style 

 very short or none; stigmas 2-cleft, brown, divaricate; leaves petioled, 

 round-elliptic, often rugose, pale-glaucous beneath, reticulately veined, en- 

 tire. — Grreenland and the Arctic coast, Labrador, Unalaska, and in the Rocky 

 Mountains of Colorado. East Humboldt and Clover Mountains, Nevada, 

 and the Uintas ; 9-11,000 feet altitude; August, September. Stems rather 

 stout, wholly prostrate, leafy only at the summit ; leaves 6-9" long, oblong 

 or suborbicular, mostly rounded at the apex, obtuse at base or subattenuate 

 into a long and slender petiole ; sterile aments 2-4" long and very loosely 

 flowered ; fertile aments also short, (3-6",) densely flowered, on long naked 

 peduncles. (1,102.) 



Early specimens of some other species, too immature for determination, 

 were collected in the neighborhood of Carson City, Nevada. (1,103.) 



PopuLUS TEEMULOIDES, Mx. From the Northern States, Newfound- 

 land, and Canada, to the Arctic Sea and Oregon, and southward in the 

 mountains to California (?), Arizona, and New Mexico. Frequent in the 

 upper canons of Nevada and Utah, rarely attaining 1° in diameter and 30° 

 in height; 6-9,000 feet altitude. (1,104) 



PopULUS MONILIFEEA, Ait. From Western New England to Missouri, 

 on the Arkansas and in Louisiana, and westward to California and Oregon. 

 Not seen in Utah, and less frequent in Nevada. Referred by Wesmael in 

 DC. Prodi-omus to P. Canadensis^ Desf , but Alton's name is much the 

 older. (1,105.) 



PoPULUS BALSAMiFEEA, L., Var. ANGUSTiFOLiA. {P. augustifoUa, James.) 

 Branches terete, glabrous ; leaves ovate-lanceolate, attenuate at base, acute, 

 glabrous, crenate-serrate. — Leaves varying much between the ordinary 

 growth (2-3' long by 8-12" wide, acute at base and often subrhomboidal) 

 and that, of the younger shoots where they may be 6-8' long and 3' or more 

 broad, and often cordate at base ; always with a long acumination. It is 

 referred by Wesmael in the Prodromus to P. monilifera, (his P. Canadensis^) 

 but its affinities are wholly with P. balsamifera, of which it is the narrow- 

 leaved form, as P. candicans is on the opposite extreme the broad-cordate 



