164 



TREES OF THE NORTHERN UNITED STATED 



Var. decipiens, with dark-brown buds ; var. EusseUiana, with more 

 slender, brighter, and more sharply serrate leaves, the annual shoots 

 silky-downy toward autumn; var. virulis, with tough, pendulous 

 branchlets, and firmer, bright green leaves. 



4. Salix alba, L. (WHITE WILLOW.) 

 Leaves lanceolate or elliptical-lanceolate, 

 pointed, serrate, covered more or less with 

 white silky hairs, especially beneath ; var. 

 ccerulea has nearly smooth leaves, at ma- 

 turity of a bluish tint; stipules small and 

 quite early deciduous. Catkins of flowers 

 long and loose, on a peduncle ; stamens 

 usually 2; stigmas nearly sessile, thick, 

 and recurved. May, June. A quite large 

 tree, 50 to 80 ft. high, with thick, rough 

 bark, usually having yellow twigs (var. 

 vitellina); introduced from Eiirope and now 

 quite common throughout. Branches very brittle at base. 



5. Salix Babyl6nica, Tourn. (WEEP- 

 ING WILLOW.) Leaves linear-lanceolate, 

 acuminate, finely seiTate, smooth, glau- 

 cous beneath ; stipules small, roundish, 

 oblique, acuminate ; branches pendulous. 



A large, gracefully drooping tree, so 

 extensively cultivated for ornament as to 

 seem native ; from Europe. 



Var. annularis (Ring-leaved Willow. 

 Curled Willow) has the leaves coiled 

 round into rings and spirals. 



8. Babyianic 



6. Salix lucida, Miihl. (SHINING OR 

 AMERICAN BAY WILLOW.) Leaves thick- 

 ish, ovate-lanceolate, with a rounded 

 base, a very long acuminate point, and a 

 glandular petiole ; when mature, smooth 

 and shining on both sides. Twigs rather 

 stout, polished, and dark green. Bark of 

 trunk smooth. Fruiting catkins quite 

 persistent. A beautiful small tree or 

 shrub, 6 to 15 ft. high, of bushy form. 

 New Jersey, north and westward. 



S. lucida. 



