196 



CuPULiFER.E : Oak Family. 



Dwarf Bmcu. Betula glandulosa,'' Miclix, One to 6 feet: Rocky Mountain region 

 (and northern — latitude 40^ — California to AVashingtou Territory ; east- 

 ward tbrougli the Northern States to the Atlantic, and north of the Uuited 

 States boundary) : peculiar for its small, rounded leaves, and resinous, gland- 

 ular spots on the young branches. 



Beaked Hazel-nut. Conjlus rostrata, Ait. Two to 5 feet: Colorado to Montana 

 (westward to Washington Territory, northward and eastward to the Alle- 

 gheuies) : hard-shelled nut inclosed hy a leafy cup, which terminates in a 

 beak. 



Salicine^e : Willow Familu A 



Willows : 



Salix cordata, MuhL ; var. Mackenziana, Hook. ; var. vestita, Anders. " Diamond 

 Willow." Ranging through the northern part of the United States from 

 the Atlantic to the Pacific and northward to the Arctic coast. 



Salix Novw-AngUw, Anders. ; var. pseudomy'rsinites, one to 3 feet; var. pseudo- 

 cordata, Anders., not tall: mountains of Colorado and Montana (northward 

 to the Saskatchewan and Mackenzie Rivers). 



Salix irrorata, Anders. Six to S feet : central Colorado (mouutains near Golden, 

 Manitou, and Empire City) : leaves 3 to 4 inches long, | inch or less wide ; 

 year-old twigs white with bloom. 



Salix moniicola, Bebb. Eight to 12 feet: central Colorado (Golden, Georgetown, 

 Empire City), marshy situations in the mountains : very dense shrub ; leaves 

 3 to 6 inches long, 1 to nearly 2 inches wide. 



Salix rostrata, Richards. Northern Idaho and Montana (to Vancouver Island, 

 northward to the Saskatchewan, eastward to New England) : with some- 

 what the habit of low bushy tree. 



Salix chloroplujlla, Anders. One and one-half to 6 feet : Rocky Mountains (and 

 northward to the Saskatchewan ; also in the Wahsatch Mountains, central 

 Utah, and in the Cascade Mountains, Oregon, and Washington Territory), 

 at an altitude of 11,000 feet : straggling, year-old twigs shiny chestnut. 

 " Green Willow." 



Salix Candida, Willd. Rare; 2 to 5 feet: bogs and foot-hills of the Rocky 

 Mountains ; noted near Cutbank Creek, Montana, and in Colorado: young 

 shoots with white wool; older twigs shiny red : leaves 2 to 4 inches long, 

 ■^ to f inch wide. 



Salix glauca, L., var. villosa, Anders. Three to 7 feet: low meadow and foot- 

 hills of the Rocky Mountains : a spreading shrub, with leaves 2 to 4 inches 

 long and entire margin. 



Salix desertorum, Richards. One to 2 feet ; leaves 1 inch long and less than 

 ^L inch wide, white- woolly beneath, with a prominent yellow midrib (in 

 variety Wolfjii the leaves finally become smooth, and are nearly the same 

 color on both sides) : a scraggy shrub, forming clumps on mountain slox)es 

 of the Rockies considerably above the timber line. 



Salix arctica, R. Br. : yar.peira^a, Anders. Colorado, (California, and far north- 

 ward) : creeping, the half-buried branches sending up twigs 2 to 3 inches 

 long. 

 Salix vestita, Pursh. Old Marias Pass, northern Montana, at altitudes of 6,000 

 to 8,000 feet (also in Canada and Labrador) : procumbent, sending up 

 branches 2 to 3 feet high, and forming nnssy growths in rocky places some- 

 times 10 feet in diameter. 



*' See arborescent species, Nos. 73, 74, pages 183, 184. 

 t See arborescent species, Nos. 78 to 81, page 185. 



