280 WHORTLE WILLOW, ETC. 



tf Venation prominent on both 

 surfaces: stomata abundant on 

 the upper surface. 



Salix Myrsinites, L. Whortle Willow. A rare Northern 

 prostrate bush. Leaves very variable, 3 4 cm. (12 

 35 x 6 18 mm.) at most ; ovate, elliptic, obovate or 

 oblong-obovate, to broad-lanceolate or sub-orbicular; at- 

 tenuate below, obtuse or acute, finely glandular-serrate or 

 nearly entire; firm and rigid, shining green, venation 

 prominent on both surfaces, midrib yellowish ; glabrous or, 

 especially when young, with a few long silky hairs, or 

 glaucous beneath. Petiole short, 1 3 mm. Stipules 

 lanceolate and toothed, or obsolete. Upper stomata 

 numerous. Autumn leaves yellow. 



[The leaves bear considerable resemblance to those of 

 Vaccinium Myrtillus, but the stems are not angular, and 

 the buds, stipules, insertion and size of the leaves distin- 

 guish them.] 



tfrf Venation not prominent: no 

 stomata above. 



Salix Arbuscula, L. Small rare Northern creeper. 

 Leaves variable, small, hard, about 2 4 cm. x 8 20 mm., 

 elliptic-lanceolate or oblong-obovate, acute or acuminate, 

 finely glandular-serrate ; glabrous, dark green and shining 

 above, glaucous and bluish, glabrous or, when young, silky 

 beneath, with prominent veins on both sides, and yellow 

 midrib. Base cuneiform. Stipules minute or obsolete. 

 Petiole short. Closely allied to S. Myrsinites, but differs 

 especially in being glaucous, not bright green beneath. 

 Stomata absent above. Autumn leaves yellow. 



[Glabrous forms of S. repens may also be looked for 

 here. See p. 243.] 



