Genus 2. 



WILLOW FAMILY. 



595 



8. Salix interior Rowlee. Sandbar Willow. River-bank Willow 



Salix longifolia Muhl. Neue Schrift. Ges. Nat. Fr. Berlin 



4 : 238. pi. 6. f. 6. 1803. Not Lam. 1778. 

 S. interior Rowlee, Bull. Torr. Club 27: 253. 1900. 

 5". linearifolia Rydb. in Britton, Man. 316. 1901. 



A much-branched shrub, 2°-i2° high, forming thick- 

 ets, or sometimes a slender tree, 20°-30° tall, and with 

 a trunk i° in diameter, the young foliage silky- 

 pubescent, the mature leaves glabrous, or nearly so, 

 those of seedlings pinnately dentate or lobed. Leaves 

 linear-lanceolate or linear-oblong, 2Y-4' long, ij"- 

 5" wide, acuminate, remotely denticulate with some- 

 what spreading teeth, short-petioled, bright green; 

 petioles not glandular; stipules minute or none; 

 aments on- short, leafy branches, linear-cylindric, the 

 staminate dense, i'-ii' long, the pistillate looser, about 

 2' long in fruit; bracts deciduous; stamens 2; filaments 

 pubescent, distinct; stigmas broad, sessile; capsule 

 ovoid-conic, glabrous or silky, about 2" long. 



Along streams and lakes, Quebec te Athabasca, Virginia, 

 Kentucky and Texas. Has been confused with Salix fluvia- 

 tilis Nutt. Wood soft, reddish-brown ; weight per cubic 

 foot 31 lbs. Long- or Narrow-leaf willow. Red or white 

 willow. Osier- or shrub-willow. April-May. 



Salix Wheeleri (Rowlee) Rydb., of lake and river shores from New Brunswick to Illinoi 

 in having the leaves permanently silky. 



s, differs 



9. Salix alba L. White or Common Willow. 

 Huntingdon or European Willow. Fig. 1459. 



Salix alba L. Sp. PI. 1021. 1753. 



Salix vitellina L. Sp. PI. Ed. 2, 1442. 1763. 



A large tree, sometimes 90° tall and a trunk diam- 

 eter of 8° ; bark gray, rough ; twigs brittle at the 

 base. Leaves lanceolate or oblong-lanceolate, acute 

 or acuminate, narrowed at the base, serrulate, silky- 

 pubescent on both sides when young, less so and pale 

 or glaucous beneath when mature, 2.'-$' long, 4"- 

 8" wide ; stipules ovate-lanceolate, deciduous ; peti- 

 oles 2"-4" long, glandless or sparingly glandular; 

 aments on short lateral leafy branches; stamens 2; 

 filaments distinct, pubescent at the base; pistillate 

 aments linear-cylindric, ii'-2i' long; stigmas nearly 

 sessile; capsule ovoid, acute, glabrous, short-'pedi- 

 celled or sessile. 



In moist soil, especially along streams. Nova Scotia 

 to Ontario, North Carolina and Iowa, escaped from culti- 

 vation. Native of Europe. Composed of several races, 

 with twigs green to yellow. Duck-willow. April-May. 



10. Salix babylonica L. Weeping Willow. 

 Drooping or Ring Willow. Fig. 1460. 



Salix babylonica L. Sp. PI. 1017. 1753. 



A large tree, with rough gray bark, sometimes attain- 

 ing a height of 70° and a trunk diameter of 6°, the 

 twigs slender, green, elongated, drooping. Leaves 

 narrowly lanceolate, long-acuminate at the apex, ser- 

 rulate all around, narrowed at the base, sparsely pubes- 

 cent when young, glabrous when mature, green above, 

 paler beneath, 4'-7' long, 3"-6" wide, sometimes curl- 

 ing into rings; petioles 3"-6" long, glandular above; 

 aments appearing on short lateral leafy branches; 

 bracts ovate-lanceolate, obtuse, deciduous; stamens 2; 

 style almost none; capsule ovoid-conic sessile, glabrous. 



Widely cultivated and sometimes spreading by the distri- 

 bution of its twigs. Connecticut to Michigan and Virginia. 

 Garb-willow. Native of Asia. April-May. 



