248 WEEPING WILLOW, ETC. 



they approach S. alba in the straight acuminate point, 

 silkiness when young, and hardly fragile twigs. 



Twigs not fragile at the joints ; leaves 

 sub-opposite. 



Salix purpurea, L. Purple Osier. The leaves are not 

 always opposite, but the sub-opposite condition prevails ; 

 and the stipules are frequently absent. See p. 178. 



7 7 Shoots pendent: twigs not fragile at 

 the joints. 



S. Babylonica, L. Weeping Willow. Weeping tree, with 

 very slender pendent shoots. Leaves 7 16 x 1 25 cm., 

 narrow to linear-lanceolate, with long drawn and oblique 

 point, finely and sharply serrate, quite glabrous and dark 

 green at least above, or bluish beneath. Petiole short, 

 5 mm., hairy above ; stipules minute, lanceolate or sickle- 

 shaped, serratulate, caducous. Upper stomata few. Vena- 

 tion as in S. fragilis. 



[The leaves of Salix triandra and S. daphnoides are 

 also sometimes more or less lanceolate, and may then be 

 looked for here, though they are usually broader. 8. 

 daphnoides is usually easily distinguished by its purple 

 twigs and waxy bloom. See p. 278. 8. triandra has 

 large stipules, and the leaves deep shining green above 

 and glaucous below. See p. 278. 



The leaves of S. nigricans, which dry black (see 

 p. 292), and those of the rare Alpine species 8. Lapponum 

 (p. 288) and S. Myrsinites (p. 280), may also give trouble 

 here when the narrow forms are met with ; the two latter 

 are dwarf and prostrate.] 



Leaves usually broader, oblong-lanceolate 

 to lanceolate, 410x22-5 cm. or so: 

 conduplicate. Stipules filiform. Leaf in- 



