44 American Midland Naturalist Monograph No. 4 



to the characteristic habitat of this species. (Syns. S. arctica Br. and var. 

 petraea Anderss., S. anglorum var. araioclada Schn. and var. kophophylla 

 Schn. of Standley's Flora of Glacier Park.) 



Occurrence. — lassen: Lassen Peak; Emerald Lake, glacier, abundant above 

 hmberline, 6,000 to 9,000 feet: Iceberg Lake; Swiftcurrent Pass; Ptarmigan Lake; 

 Piegan Pass; Logan Pass; Cut Bank Pass; Sperry Glacier trail. YELLOWSTONE, com- 

 mon: Mount Washburn, 10,200 feet. GRAND TETON. ROCKY MOUNTAIN, occasional: 

 Trail Ridge, 11,500 feet. 



3a. Tufted Skyland Willow (Var. caesp.tosa Schn.) — .Similar to 

 the species but the leaves more narrowly elliptic or reverse-egg-shaped, pointed 

 at both ends, thinly hairy above or along the margins. 



Occurrence. — YOSEMITE, common, 10,000 to 11,000 feet: Mount Dana; Mount 

 Lyell; Vogelsang Pass; Mono Pass; Gaylor Lakes; above Fletcher Lake. KINGS CAN- 

 YON: Harrison Pass trail; Reflection Lake; Bullfrog Lake; Mount Brewer. SEQUOLA, 

 common, 9,000 to 11,000 feet: above Pear Lake; Mount Whitney; Milestone Plateau; 

 Little Five Lakes; Big Five Lakes. 



4. Cascade Willow (Salix cascadensis Ckl.) . — Dwarf creeping plant 



1 to 2 inches above the ground; leaves narrowly elliptic to reverse-egg-shaped, 



y^ to y2 inch long, green and smooth on both sides, strongly veined, capsules 



hairy; styles 1 to 1^2 tuti- long. (Syn. S. tenera Anderss.) 



Occurrence. — OLYMPIC: Mount Claywood; Diamond Mountain; Marmot Pass. 

 MOUNT RAINIER, on rocky alpine summits. GLACIER, on rocky slopes above timberline: 

 Sexton Glacier. YELLOWSTONE: Mount Washburn, 10,000 feet. 



5. Dusky Willow (Sal'x melanopsls Nutt.). — Shrub or small tree 6 

 to 15 feet high; leaves l^z to 3 inches long, linear lance-shaped to narrowly 

 elliptic, tapering at both ends, dark green above, paler below, somewhat hairy 

 when young, the margins irregularly toothed; catkins appearing after the leaves, 

 % to 1 1/2 inches long; scales yellowish; stamens 2, the filaments hairy below; 

 capsules not hairy; styles very short or none. (Syns. S. Bolanderiana Rowl., 

 S. longijolia Jepson, S. fluviatilis auth., not Nutt.). 



Occurrence. — yosemite, 2,500 to 5,000 feet: Yosemite Valley; El Portal; Wawona. 

 KINGS CANYON, at lower elevations. SEQUOIA: western boundary of park. GLACIER, 

 common, 3,100 to 5,250 feet: North Fork Flathead River; south of Kishenehn ranger 

 station; shore of St. Mary Lake near East Glacier campgrounds; outlet of St. Mary 

 Lake; Divide Lake. YELLOWSTONE. 



6. Coyote Willow, Sandbar Willow {Salix exigua Nutt.). — Shrub 

 5 to 15 feet high, commonly found growing in sandy soil along streams, often 

 forming thickets; leaves mostly linear, 2 to 6 inches long, more or less 

 hairy on both sides, the margins toothed or not toothed; catkins appearing 

 after the leaves, borne on short leafy stalks; scales yellowish, soon falling; 

 stamens 2, the filaments hairy below; capsules not hairy or thinly hairy; styles 

 none. The Indians stripped the long slender branches and used them for 

 basket-making. 



Occurrence. — glacier, rare: Two Medicine Creek near Glacier Park. ROCKY MOUN- 

 TAIN, about 7,500 feet. MESA VERDE. BRYCE CANYON. ZION : near Zicn Lodge, 4,200 

 feet. GRAND CANYON, in the canyon, 2,500 to 4,200 feel: Indian Gardens; near Phan- 



