SALICACEAE. 117 



with an appressed satiny white pubescence, entire or obscurely crenate, 5-10 

 cm. long; petioles short; aments long, slender, ascending, densely flowered, 

 2-8 cm. long; scales dark, villous; capsules ovate-conical, acute, silky-pubes- 

 cent, subsessile; style elongate, 1-1.5 mm. long; stigmas thick, erect. 



Common along rive,rs and lake shores. Abundant along mountain streams. 



Salix pennata Ball. Low shrub with dark, divaricate, stoutish, glabrous 

 branchlets and large chestnut-colored buds; leaves obovate or elliptic-obovate, 

 3-6 cm. long, acute, narrowed at base, entire, very dark green above, glaucous 

 beneath, the raised midrib and parallel primary veins conspicuous beneath, gla- 

 brous; aments sessile, stout; pistillate 2.5-7 cm. long; capsules subsessile, 6-8 

 mm. long, densely silvery pubescent; style about 1.4 mm. long; stigmas long; 

 scales obovate, acute, black, densely pilose; stamens 2; filaments glabrous, free. 



Mount Adams, Suksdorf; Mount Hood, Howell, Applegate. This species 

 is closely related to S. chlorophylla Anderss. under which name it is mentioned 

 in the Flora of Washington. 



Salix scouleriana Barr. Shrub or small tree, 4-10 m. tall, with dull gray 

 bark; leaves very variable, mostly oblanceolate to obovate, sometimes oblong 

 or elliptical, mostly obtuse or abruptly acute at the apex and cuneate at base, 

 3-10 or 12 cm. long, entire to shallowly serrulate, thick, green and glabrate 

 above, silvery to rusty (in age) pubescent to glabrous and glaucous and re- 

 ticulate beneath; stipules minute to large, ear-shaped, denticulate; aments 

 appearing before the leaves, densely flowered, sessile or the pistillate very 

 short peduncled, 2-5 cm. long; capsules long-beaked, 7-9 mm. long, tomentose; 

 pedicels pubescent, 1.5 mm. long; stigmas sessile, long; scales obovate, black, 

 long-hairy; stamens 2; filaments glabrous, free. 



The commonest willow in our limits, occurring both in dry uplands and 

 swamps. The young leaves and bark have a peculiar fetid odor. An immense- 

 ly variable species especially as to foliage. 



Salix geyeriana Anderss. Slender-stemmed shrub, 3-5 m. high; branchlets 

 glaucous, glabrous; leaves elliptic-lanceolate or sometimes oblanceolate, 

 acute at each end, dark green and thinly pubescent above, pale to glaucous 

 and silky beneath, 2-6 cm. long, the entire margins revolute; aments short - 

 cylindric, 1-2 cm. long, appearing with the leaves, on short leafy peduncles; 

 stamens 2, the filaments pubescent below; capsules sharply tapering from an 

 ovoid base, 5-7 mm. long, densely pubescent; pedicels pubescent, 2 mm. long; 

 style short; stigmas short, divided; scales usually dark, narrow, acute, thinly 

 pilose. 



A rather rare willow found in open places along streams. 



Salix cascadensis Cockerell. (S. tenera Anderss., not A. Br.) Prostrate 

 creeping shrub about 5 cm. high; leaves narrowly elliptical to obovate, 

 broadest at or above the middle, acute at each end or rarely obtuse at the 

 apex, green and glabrous on both sides, 8-12 mm. long; aments small, sub- 

 globose, 5-20 mm. long, few-flowered; scales brownish, villous; capsules 

 sessile, 4-5 mm. long, tomentose; styles elongate, 1-1.5 mm. long. 



Mount Rainier, Flett; second summit west of Skagit River, lat. 49, Macoun, 

 probably the same peak where first collected by Lyall. 



Salix saximontana Rydb. Densely cespitose and much branched, 3-6 

 cm. high; leaves elliptic-oblong to suborbicular, obtuse or abruptly acute at 

 the apex, 15-25 mm. long, 10-15 mm. wide, with entire and revolute margin, 

 light green above, glaucous and strongly net-veined beneath, glabrous through- 

 out; aments 1-2 cm. long, many-flowered; scales broadly obovate, obtuse or 

 rounded at the apex, cuneate at .the base, yellowish, nearly glabrous; capsules 

 3-4 mm. long, densely white-tomentose. 



At high elevations in the Cascade and Rocky Mountains. Mount Rainier, 

 Flett. 



