286 BEECH : OSIER 



ends to branch close within the margin. Angles about 

 35 45. Tertiaries not looped beneath the slightly un- 

 dulating margin. Each pair of secondaries distant about 

 | of the length of the midrib, the lowest much shorter 

 than those in the middle of the leaf, and devoid of 

 prominent outer veins, and curved outwards. Secondary 

 segments narrow, the middle nearly linear. Tertiaries at 

 rather acute angles from outside the secondaries, at right 

 angles or slightly obtuse inside : the axial ones chiefly 

 slightly acute, all connecting. Network well developed: 

 meshes rather loose and rounded. 



(ii) Leaves spiral on all the shoots. 



[For (/3) (a) Leaves stipulate. 



seep. 294.] 



[Sec note, p. 161.] 



* Leaves lanceolate or very narrow-lanceo- 

 late. Silky or tomentose beneath. 



+ Leaves linear-lanceolate, with waved edges; 

 about 1030 x 0-52 cm. 



Salix viminalis, L. Osier (Fig. 109). An osier shrub 

 with silky shoots and buds, and very narrow and long 

 waved leaves. Leaves herbaceous, lanceolate to linear- 

 lanceolate, acuminate, 10 18 cm. x 5 12 mm., but up to 

 20 30 cm. long, usually about 8 10 times as long as 

 broad, and pointed both ends: petiole 5 12 mm., dilated 

 below, or sub-sessile. Entire or obscurely toothed at 

 the wavy margins, which may be also revolute, especially 

 in youth. Upper surface green or greyish green and more 

 or less shining glabrous or pulverulent, and reticulate ; 

 densely silvery silky or grey-tomentose beneath, the hairs 

 parallel to the secondaries. Midrib often orange or fawn- 

 coloured, and the venation prominent but not strong. 

 Stipules linear-lanceolate to subulate, or on the strong 



