146 FLORA OF MOUNT DESERT. 



inas spreading, recurved, 2-lobed; gland embracing the pedicel; 

 leaves broadly lanceolate tapering to a prolonged slender point, 

 glabrous and shining above, silvery-silky beneath when young. 

 Wimmer, Salices Europseae, 133. Southwest Harbor (R. & R.). 

 All the common large willow trees of the Island probably be- 

 long either to S. fragilis or to this hybrid. Both were of early 

 introduction, and have become spontaneous all over the Island. 

 Forms of S. alba may also be looked for. 



S. rostrata, Richardson. S. livida, Wahl., var. occidentalism 

 Gray. 



Very common in either wet or dry soil. 

 S. discolor, Muhl. COMMON SWAMP WILLOW. 



Very common in low grounds. 

 S. humilis X discolor, Bebb. 



Leaves as broad and large as those of S. kumilis, but duller 

 green, softly tomentose beneath, and with shorter petioles ; the 

 aments thick as those of S. humilis, but usually recurved, and 

 the capsules on shorter pedicels. Bebb, Gray Man., 6th ed., 

 483. Swamp, Southwest Harbor (Redfield). 



S. humilis, Marsh. Low WILLOW. PUSSY WILLOW. 



Common in dry or wet ground everywhere from sea level to 

 mountain summits. Forms with large leaves may be described 

 as follows : 



Var. grandifolia, Anders. DC. Prod., xvi. 2. 236. 



Leaves obovate-oblong 3'-4' long, l' broad above the middle, 

 shining above. Appearing in the following forms : 



Forma obtnsifolia. 



Leaves very short-pointed; either smooth and glaucous, or 

 slightly tomentose beneath. Near Great Pond (R. & R.)j 

 Sutton Island (Rand). 



Forma acuminata. 



Leaves more attenuate-pointed; glaucous and tomentose be- 

 neath, generally becoming smooth. Seal Harbor (Redfield) ; 

 wood road to Denning Pond (Rand). 



