250 CORK OAK : APPLE, ETC. 



and sinuous, the lowest coming off at open angles of 

 80 90^ the rest at angles of 40 55. Tertiaries nearly 

 straight as cross-ties, at open angles. Meshwork very fine. 



[The Cork Oak, Q. Suber, has similar leaves, but the 

 bark is thick and corky. 



The Holly is usually more lobate-toothed, quite gla- 

 brous, and shows no stipules (but see pp. 20 and 203).] 



Leaves not hard and evergreen, or spin- 

 escent-toothed. 



f~I Leaves small, about 1 4 cm. long; teeth 

 very minute and distant. Plant dwarf 

 or creeping. 



Salix repens, L. The broader-leafed forms, elliptic to 

 broad oval or ovate, may be looked for here (see p. 243) ; 

 the serratulation may be extremely minute or even absent. 

 See p. 288. 



Salix Lapponum, though usually entire, occasionally 

 shows undulate toothing, and might then be looked for 

 here. See p. 288. 



l~~l r~l Leaves larger, about 5 10 cm. or more 

 long, distinctly toothed. Plant not dwarf 

 or creeping. 



Serrate or bi-serrate, teeth small; vena- 

 tion pinnate, or pinnate-looped and 

 reticulate. 



Jf Simply serrate; venation pinnate-looped 

 and reticulate. 



Pyrus Mains, L. Apple (Fig. 88). Small tree with 

 leaves tufted on the dwarf shoots. Leaves broad and short, 

 ovate or oval to oblong-ovate, 4 10 x 3 6 cm., acute or 

 acuminate, serrate or crenate-serrate, tough, glabrous or 

 nearly so in some forms but typically shining above and 



