AMENTIFER &. 211 
callous-serrate, more or less silky pubescent on both sides, rarely 
glabrous when mature. Stipules linear-lanceolate or ovate, very 
caducous, often absent. Catkins opening at the same time as the 
leaf-buds expand, on short leafy lateral branches, spreading, cylindrical, 
rather thin, lax, especially in fruit. Catkin-scales strapshaped, sub- 
acute, more or less pilose towards the base, glabrous and ciliated 
towards the apex. Stamens 2; filaments hairy in the lower half. 
Capsule ovate-oblong, glabrous, on a stalk scarcely longer than the 
nectary; style scarcely any; stigmas rather long, divaricate, notched. 
Young branches and young leaves almost always silky-pubescent with 
white hairs. 
Var. a, genuina. 
Prats MCCCIX. 
S. alba, Sm. Engl. Bot. ed. i. No. 2430. 
8. alba, var. a, Sm. Engl. Fl. Vol. IV. p. 231. Hook. & Arn. Brit. FI. ed. viii. p- 401. 
Hook. Brit. Fl. ed. iv. p. 359. 
Twigs olive. Mature leaves more or less silky on both sides. 
Var. 6, cvrulea. 
Pratt MCCCX. 
S. ccerulea, Sm. Engl. Bot. ed. i. No. 2431. 
Twigs olive. Leaves at length glabrous and glaucous beneath, 
and with a bluish tint. 
Var. y, vitellina. Koch. 
Prats MCCCXI. 
8. vitellina, Linn. Sm. Engl. Bot. ed. i. No, 1389, and Brit. Fl. ed. iv. p. 182. 
Hook. & Arn. Brit. Fl. ed. viii. p. 401. Hook. Brit, Fl. ed. iv. p. 359. Lindl. 
Syn. Brit. Fl. p. 231. 
Twigs bright golden-yellow or tinged with red. Leaves glabrous 
above when mature. ‘Catkin-scales pointed, longer than either 
stamens or style.” (Walker-Arnott.) 
By the banks of rivers, and in osier grounds and swamps. Com- 
mon, and generally distributed, not extending to the extreme north of 
Scotland. Considered rather a doubtful native of Ireland by the 
authors of the “Cybele Hibernica.” Var. 8 with the type. Var. y 
principally in osier grounds. 
EE2 
