Salix.] LXXIII. AMENTACEJE. 409 



Hale catkins sessile. Females sessile or on very short peduncles, 



with or without leafy bracts. 

 Stamen 1 within each scale *ntire or forked. Leaves narrow, 



glabrous or whitish underneath. Anthers usually purple 5. S. purpurea. 

 Stamens 2, distinct Anthers usually yellow. 

 Leaves very silky and white, at least underneath. 



Stems erect, twiggy. Leaves long, lanceolate or linear . 6. S. viminalis. 

 Stems creeping underground. Leaves small, ovate, oblong 



or lanceolate 10. S. repens. 



Leaves glabrous, downy or cottony. 

 Leaves wrinkled, usually with a short, crisp or cottony 



down, especially underneath. Capsules pedicellate. 

 Male catkins very silky, oblong. Capsules 3 to 4 lines 



long. Leaves ovate or oblong 7. S. Caprea. 



Male catkins cylindrical, rather silky. Capsules 2 to 3 



lines long. Leaves mostly obovate . . . . 8. S. aurita. 

 Leaves not wrinkled, glabrous and downy when young. 



Catkins rather slender. Capsules pedicellate . . 9. S. phylicifolia. 

 Leaves not wrinkled, downy or woolly, quite entire. Cat- 

 kins dense and very silky-hairy. Capsules sessile. 



Catkins silky-white. Capsules about 2 lineh long . . 11. S. Lapponum. 

 Catkins golden-yellow. Capsules about 3 lines long . 12. S. latuita. 

 Male and female catkins on short, leafy shoots. 

 Trees or tall shrubs. 



Stamens about 5. Leaves dark-green and shining . . . 1. S. pentandra. 

 Stamens 3. Leaves green above, white underneath . . 4. S. ainygdalina. 

 Stamens 2. 



Leaves ashy-grey or silky-white. Capsules nearly sessile 3. S. alba. 

 Leaves green or glabrous. Capsules pedicellate . . 2. S. fragtiis. 

 Low, spreading or prostrate, or creeping shrubs. 

 Catkins at the end of short, leafy shoots, without buds. 

 Stems procumbent, ascending, or forming low bushes. 

 Leaves slightly toothed. Male catkins nearly sessile. 



Capsules pedicellate 9. S. phylicifolia. 



Leaves finely toothed. All the catkins on leafy stalks. 



Capsules almost sessile 13. S. ilyrsinites. 



Catkins on short peduncles, at the last leaf of a branch, 

 with a bud in the angle. Stems prostrate or creeping. 

 Leaves entire, wrinkled, white underneath . . .14. S. reticulata. 

 Leaves finely toothed, not wrinkled, green on both sides 15. S. herbacea. 



The well-known weeping Willow (S. Babylonica) is of Asiatic origin. 

 The S. daphnoides, from continental Europe, with the male catkins like 

 those of S. Caprea, but with lanceolate, pointed, green or glaucous 

 leaves, is occasionally planted, and has been seen apparently wild near 

 Cleveland in Yorkshire ; and some other Continental or North American 

 species have been described as British from planted specimens. Many 

 of the British species are also natives of North America. 



1. S. pentandra, Linn. (fig. 918). Say W.A shrub or small tree, 

 from 6 to 20 feet high, glabrous or rarely slightly silky on the young 

 shoots, the twigs green or yellow. Leaves broadly lanceolate or oblong, 

 pointed, finely toothed, thicker and more smooth and shining than in 

 any other species. Catkins cylindrical and loose, on short, lateral, leafy 

 shoots ; the males 1 to 2 inches long, less hairy than in most species. 

 Stamens usually 5 but sometimes more, and there are almost always 2 

 or even more entire or divided gland-like scales at their base. Ovaries 

 glabrous, nearly sessile or stalked. Capsules 2 to 3 lines long, of a 

 yellowish-green. 



In damp, open woods, and along streams, chiefly in hilly districts, 

 *teoding alj over Europe and temperate As?a to t^p Arctic regions. 



