so Trans. Acad. Sci. of St. Louis. 



S. MACROCARPA Nuttall. 



S. Hiacrocarprt Nutt.,* Sylva 1:67. 1842. — Bebb, Bot. Gaz, 10:221. 

 1885. — Bebb, Bot. Gaz. 16:105. 1891. 



S. Geyeriana Andersson, Sal. Bor.-Am. 63. (17). 1858. — Anders. Monog. 

 Sal. 86. /. 50. 1867. — Anders, in DC. Prod. 162:226. 1868. 



As Mr. Bebb has clearly shown us, Andersson ignored Nut- 

 tail's Oregon type specimen and transferred Nuttall's name to 

 an entirely different willow from Hudson's Bay. He then de- 

 scribed the Oregon willow as S. Geyeriana, from Geyer's speci- 

 men, of which the staminate aments belonged to S. rostrata. 

 Otherwise the two descriptions agree. 



This beautiful and well-marked species is found in wet 

 places of the West from So. Calif, to Wash, and the Mts. of 

 Colo, and Wyo. It doubtless occupies the intermediate region 

 and extends farther north. It is a small shrub, 3-8 feet 

 high, with short, divaricately branched twigs usually covered 

 with a glaucous bloom; leaf scars large; leaves lanceolate, or 

 widest just above the middle, 1^-2^ in. long, 3-6 lines 

 wide, acute at both ends, more or less downy above and 

 brown-silky below, at length glaucous below, and glabrous, 

 entire; stipules none ; aments appearing with the leaves, sub- 

 globose to oblong, ^-| in. long, rather dense, looser in fruit, 

 short-pedunculate with silky bracts, peduncle about \ in. long 

 in fruit ; scales oval-oblong or narrower, obtuse, tawny or 

 dark at apex, long villous ; filaments shorter and thicker 

 than in 8. rostrata, densely pubescent for y-^ their length ; 

 capsules slender, silky-villous or glabrate, 2-3 lines long; 

 pedicels pubescent, slender, 1-1^ lines long; stigmas sessile, 

 bifid or entire. 



Specimens examined. — Allen, 107a, 107f, 107m, Fl. Cascade Mts., 

 Was-h. 1895. — B:iker, 18,19, 20, (Rowlee), PI. No. Colo. 1896.— Engel- 

 mann, Canon above Grand Lake, Middle Park, Colo., " S. irrorata fide Bebb," 

 Aug. 5, 1880. — Hansen, 199, m. Sequoia Reg. 1892. — Howell, 1261, V&c. 

 Coast PL, Oregon, 1887. — Nelson, 2095, Fl. Wyo., S. Geyeriana, 1836.- 

 Suksdorf, 698, Fl. Wash., Falcon Val!ey. 1883. 



S. MACROCARPA Var. ARGENTEA Bebb. 



S. macrocarpa var. argentea Bebb, Bot. Gaz. 10: 223. 1885. — Bebb, Bot. 

 Gaz. 16: 105. 1891. 



S. Geyeriana Anders, of Bebb, Bot. Calif. 2: 87. 1880. 



* This is not the S. macrocarpa Nuttall of Andersson in Sal. Bor.-Am. 64. 

 (19). 1858. — Monog. Sal. 142. /. 76. 1867. — in DC. Prod. 16^:245. 1868. 



