Salix Salix, B. Flod. Salix Salix, L.

24. S. giandulifera B. Flod. View in CoL , Bot. Not. 1930: 338 (1930).

Like 23 but leaves usually oblanceolate, with 6-8 pairs of lateral veins; margin flat, densely glandular; stipules long, acute, with sharp glandular teeth. 2n = 38. Arctic Europe. Fe No Rs (N) Su.

S. recurvigemmis A. Skvortsov, Not. Syst. (Leningrad) 18: 37 (1957), from E. arctic Russia (and N. Siberia), an often-procum- bent shrub with persistent bud-scales, and the ovary pubescent when young, has been recognized as another member of the S. lanata group, but its relationships are unclear. (25-28). S. phylicifolia group. Shrub up to 4 m. Twigs dark, shining, glabrous or glabrescent. Leaves glabrous at maturity, more or less shiny above, more or less glaucous beneath, not blackening on drying. Catkins subsessile or shortly pedunculate, rather lax in fruit. Ovary silky pubescent; pedicel 2-4 times as long as nectary.

This is one of the most difficult groups in Salix . It is the more complicated because of the strong tendency to hybridize with S. nigricans as well as with species of Sect. Capreae (species 39- 41) and of the S. glauca group. 1 Leaves silky, hairy when young, glabrescent later; decorticated wood with short distinct ridges 26. bicolor 1 Leaves almost glabrous even when young; decorticated wood without ridges 2 Leaves with short glandular teeth, shiny above

25. phylicifolia 2 Leaves entire or with very indistinct crenulate-glandular teeth

3 Leaves indistinctly glandular-serrate, widest above the middle, often tapering towards the base; lateral veins 7-10 pairs; petiole 3-6 mm 27. hegetschweileri

3 Leaves almost entire, widest at or below the middle; often with rounded base; lateral veins 9-12 pairs; petiole

2-3 mm 28. hibernica

25. S. phylicifolia L. View in CoL , Sp. Pl. 1016 (1753).

Ridges on decorticated wood absent. Buds narrow, acute, dark brown. Leaves obovate-lanceolate to ovate or narrowly elliptical, tapering at both ends, shiny above, with short glandular teeth. Catkins 2-4(-10) x 1 cm. Filaments entirely glabrous. 2n= 114. N. Europe, southwards to England and Latvia. Br D a Fa Fe Hb Is N o Rs (N, B) Su.