THE WILLOWS OF OHIO. 313 



The Broad-leaved Willow is a sp< of the (ireat Lake ba- 



sin and in Ohio is confined to the northern part of the state. It 

 is common along the western portion of the Lake Shore but pro- 

 bably does not extend beyond Cleveland. 



Salix glaucophylla at times seems to grade into Salix cordata 

 by what are probably a series of hybrids. In other i t is 



very difficult to separate from 5. discolor with which it also pro- 

 bably hybridises. 



MYRTILLOIDES. BOG WILLOWS. 



Low shrubs with mostly elliptical, glaucous, glabrous leaves 

 strongly reticulate veined and purplish green; aments and br. 

 usually reddened, small, few flowered; filaments often partially 

 united showing their affinity with the following group; a group of 



three or lour species all very similar to the European Salix 

 myrtilloides. 



Salix pedicellaris (Anders). American Bog Willow. 



A low shrub seldom reaching a height of 1 meter, aereal 

 shoots erect, slender, supported in the sphagnum by long creep- 

 ms which run tar down into the bog putting out numerous 

 rootlets along their length. Leaves when fully grown sometimes 

 l. long and 20 25mm. broad, but ordinarily smaller, elliptical, 

 oblong, spatulate or rarely obovate, pointed at both ends, entire, 

 slightly revolute, dark purplish-green above, slightly glaucous 

 below, not hairy unless when very young, nearly sessile, venation 



picuously reticulate with meshes large and coarse consider- 

 ing the size of the leaf. Catkins appearing with the lea- 

 loosely flowered, no1 more than 25 mm. long in flower, bu1 

 sionally 5 cm. in fruit, scale short, often no longer than the nec- 

 tary, as broad as long, filaments often more or less united; cap- 

 sules long pedicelled, nearly always glabrous, short conic to cylin- 

 dric-conic, obtuse, sometimes 8 mm. long in fruit, with a decided 

 tendency to turn red or purple. 



Salix llaris is a northern sp< rowing in cold peat 



3 win-re it may be easily recognized by its small size and 



! late XVI. Salix purpu 



S. piirpm | it .il branch with o] 



flowers and trim typical, the latl European specimen; natural 



and i a] sule enlarged i hr< e t imes, phi 

 and brightened 



S pedicellaris Typical h with small "\.it<- leal from 



the base ol iminate and carpellate il" <! fruit 



ical, ' In I.im. i Hi >t ri| e . natural iminate fl< 



enlarged I hem, marked M . l-t ween ' I 



fill pll) 



