STANDLEY — FLORA OF GLACIER PARK. 321 



the Central States. — -Bright green, clustered shrub, 1 to 5 meters high; twigs reddish; 

 leaves linear or linear-lanceolate, very acute at both ends, 5 to 12 cm. long, 2 to 12 

 mm. wide, pure green on both sides, glabrate when mature, often thinly villous 

 with long white hairs when young; catkins at the ends of leafy branches; capsules 

 5 to 8 (mostly 7) mm. long, glabrous when mature; pedicels 0.5 to 1.5 mm. long. 



Forms with very narrow leaves, somewhat grayish rather than bright green, and 

 with numerous long slender teeth, represent 5. longifolia tenerrima Henderson, which 

 Schneider makes a variety of S. exigua Nutt., but states that he is doubtful as to 

 what specimens should be referred to this variety and what to S. longifolia pedicellata 

 Anderes. They require further study, 



5. Salix melanopsis Nutt. Common at low altitudes, on rocky slopes, in low 

 thickets, or on stream and lake banks. Alta. to Idaho and west to Calif, and B. C. — 

 Dark green clustered shrub, 1 to 5 meters high; twigs brownish; leaves oblanceolate 

 or elliptic, acute, 4 to 8 cm. long, 6 to 15 mm. wide, usually subentire, sometimes 

 with sharp slender teeth, deep green and glabrous above, pale green or subglaucous 

 and often thinly hairy beneath (in the park and northward a form with leaves rather 

 densely shining-hairy on both sides occurs rather commonly); catkins on short leafy 

 branches; capsules glabrous, nearly sessile, 4 to 5 mm. long. 



6. Salix farrae Ball. Frequent on the east slope at middle altitudes or about timber 

 line; in bogs or wet meadows. Rocky Alts, of southern Alta. and B. C. and northern 

 Mont. — Small shrub, probably 30 to 60 cm. high; twigs red or the youngest reddish 

 yellow, shining; leaves oblanceolate to elliptic or broadly lanceolate, usually widest 

 just above the middle, acute or abruptly short-acuminate at apex, 3 to 5 cm. long, 

 entire or nearly so, glaucousandrather finely net- veined beneath at maturity; capsule 

 4 to 5 mm. long; pedicels 1 to 1.5 mm. long. 



7. Salix mackenziana (Hook.) Barratt. Belton, on brushy rocky slope. Sask. to 

 Wyo., Calif., and B. C. — Shrub 2 to 4 meters high; leaves oblanceolate, or the lower 

 narrowly obovate, sometimes lanceolate, acute to short-acuminate, 4 to 7 or 10 cm. 

 long, subentire to finely toothed; capsules 4 to 5 mm. long; pedicels 2 to 4 mm. long, 

 2 to 3 times as long as the scales. 



8. Salix pseudomyrsinites Anderss. Frequent on the east slope at low altitudes, in 

 wet thickets or along streams. Sask. to N. Mex., Calif., and Wash. — Shrub 1 to 3 

 meters high; twigs short, diverging, shining; leaves lanceolate-oblong to elliptic- 

 lanceolate, 4 to 8 cm. long, thick, coarsely net-veined beneath, subentire to sharply 

 gland -toothed, dark green on both sides; catkins 2 to 3 cm. long; capsules 4 to 5 mm. 

 long; pedicels 1 to 1.5 mm. long. 



9. Salix pseudomonticola Ball. Frequent on the east slope at low or middle 

 altitudes; rarely found above timber line, on rock slides; usually in wet woods or 

 thickets. Sask. and Alta, to northern Wyo. — Shrub 1 to 3 meters high; twigs stoutish, 

 shining; leaves narrowly to broadly ovate (young obovate), 4 to 6 or 8 cm. long, 1.5 to 3 

 cm. wide, rounded to subcordate at base, acute to abruptly short-acuminate at apex, 

 rather coarsely wavy-toothed or subentire; catkins 3 to 7 cm. long, nearly sessile; 

 capsules 6 to 8 mm. long; pedicels 1 to 1.5 mm. long; styles about 1 mm. long. 



10. Salix commutata Bebb. Common above timber line, in wet meadows or on 

 open rocky slopes; one of the characteristic plants of alpine meadows. Alaska to 

 northern Wyo. and Calif. — Shrub 1 to 3 meters high; twigs tomentose; leaves elliptic 

 to broadly oblanceolate or obovate, 4 to 8 cm. long, entire or nearly so, cuspidate at 

 apex, green and tomentose on both sides, becoming glabrate with age; catkins short, 

 2 to 3 or 4 cm. long, on leafy peduncles 2 to 4 cm. long; capsules 5 to 7 mm. long; 

 pedicels about 1 mm. long. 



11. Salix barrattiana Hook. Gunsight Pass, on rock slide. High elevations in 

 the Rocky and Selkirk Mts. of Alta. and B. C; not before collected in the U. S. — 



