290 WOOLLY WILLOW: RETICULATE WILLOW 



cm.); acute, densely woolly or silky tomentose on both 

 surfaces, entire, reticulation prominent beneath, sub- 

 coriaceous, petioles short ; stipules half-cordate, glandular- 

 serratulate or entire. No stomata on the upper surface. 

 Closely allied to S. Lapponum. Autumn leaves yellow. 



tt Leaves glabrous or glabrescent, not tomen- 

 tose beneath. 



Petioles relatively long. Reticulation dis- 

 tinct. 



f~~l Leaves 3 5 cm., broadly oval to sub- 

 rotund. Tree with thorny dwarf shoots. 



The Pear occasionally has entire leaves, and may be 

 looked for here. See p. 274. 



[The same is true of the occasionally entire cordate 

 leaves of Populus tremula. See p. 264.] 



7 3 Leaves not larger than 2 4 cm. or so, 

 obovate to sub-orbicular. Dwarf creeper 

 with no trace of thorns. 



Salix reticulate. Reticulate Willow (Fig. 111). Small, 

 rare Northern creeper with twigs 5 20 cm. long. Buds 

 few, 2 4, aggregated at the tips of the 

 shoots. Leaves 12 16 mm. diam. up to 

 23 cm. (14 x 0-82-5 cm.), oblong- 

 orbicular or elliptic-rounded, obovate 

 to obcuneate, sub-rotund, or orbicular ; 

 firm, obtuse or slightly retuse ; margins 

 entire or waved, or slightly reflexed, 

 dark green, somewhat shiny, and ru- 

 gose above, glabrous, glaucous, bluish 



erey or white and hoary glaucous ~ 



& J J . . Fig- 111. Keticulate 



beneath ; with very prominent reti- willow, Salix reti- 



culation on both surfaces. Young cuiata, p. 290 (Ett). 



