SALIX 61 



x. Leaves narrowly lanceolate, short- 



petioled S. nigra 



y. Leaves broadly lanceolate or lance- 

 ovate; slender-petioled. S. amygdaloides 

 2. Leaves persistently hairy, at least beneath 



a. Cultivated trees 



( 1 ) Leaves serrulate S. alba 



(2) Leaves entire S. viminalis 



b. Native shrubs 



(1) Low shrubs, 1-6 ft. high 



(a) Leaves 2-5 cm. long; shrub 1-2 ft. high S. tristis 



(b) Leaves 5-10 cm. long; shrub 2-6 ft. 



high 

 x. Leaves and young twigs white-hairy 



beneath 5. Candida 



y. Leaves gray-hairy beneath S. humilis 



(2) Tall shrubs, 5-12 ft. high 



(a) Leaves lanceolate, silky shining below S. sericca 



(b) Leaves ovate-lanceolate or ovate, 



densely white-hairy below S. rostrata 



Salix fluviatilis Nut tall 1842 Sandbar Willow, Longleaf 



Willow 



S. longifolia Muhlenberg 1803, not Lamarck 1778 



Low branching shrub, 3-10 ft. high, or rarely a low slender tree; 

 bark smooth, gray, yellow or brown; leaves linear, rarely oblong, with 

 10-20 minute spiny teeth on each edge, tip very long-pointed, long taper- 

 ing toward the base, white-silky on both sides when young, becoming 

 smooth when mature, or in one form persistently silky below, midrib 

 prominent, lateral veins indistinct, 6-15 cm. long, 2-12 mm. wide, petioles 

 very short, 1-2 mm. long; staminate catkins 2-4 cm. long, ]/ 2 -\ cm. 

 wide, stamens 2, wi^h distinct hairy filaments, pistillate catkins 2-5 cm. 

 long, \ l / 2 cm. wide in fruit, capsule ovate, beaked, rugose or somewhat 

 hairy : fluviatilis, from f 1 u v i u s, stream, in reference to the habitat. 



Abundant throughout the state along streams, on sandbars and sandy 

 shores; Quebec-Va-Ky-NM-Athabasca. Flowering in May or June. Val- 

 uable for binding sandy banks and shores, and in reclaiming lowlands. 



Wood soft, reddish brown, weight 31 lbs., of no value except for 

 charcoal. 



