Salix Salix, L.

51. S. arenaria L. View in CoL , Sp. Pl. 1019 (1753).

Previous year’s twigs stout, hairy, dark. Leaves obovate, more or less spreading, short, firm, with remote, sharp, glandular teeth, densely covered on both surfaces with long silky hairs, finally dull grey-green above with hooked hairs; margin deflexed; lateral veins 5-8 pairs. Stipules often present. Catkins ovoid. Bracts hairy. Filaments hairy. Capsule usually hairy. Stigma short, more or less globose. 2« =38. Mainly on maritime dunes. Atlantic coasts o f Europe extending to Poland. Be Br D a G a Ge H b H o Lu N o Po Su. (52-54). S. arbuscula group. Shrubs up to 2 m. Twigs glabrous. Leaves shiny above, glaucous beneath, never turning black on drying. Stipules minute or absent. Ovary hairy. Pedicel shorter than the nectary or absent. The last-mentioned character is useful for distinguishing the S. arbuscula group from the 5. phylicifolia group, which is rather similar in leaf-characters to the former but has the pedicel 2-4 times as long as the nectary (vide K. H. Rechinger, Feddes Repert. 45: 87-94 (1938)). 1 Leaves 3-5 cm, obovate or elliptical, indistinctly and remotely crenate-serrate, sometimes subentire; catkins l-4-3-5x0-5-

0-8 cm; peduncle long 54. waldsteiniana 1 Leaves 0-5-3 cm, lanceolate or elliptical-lanceolate, densely and regularly serrate; catkins 1-3-1-8 x 0-4-0-5 cm; peduncle short

2 Leaves acutely serrate, with large white glands; lateral veins 5-10 pairs; catkins c. twice as long as wide 53. foetida 2 Leaves subacutely serrate with small glands; lateral veins 7-12 pairs; catkins c. 3 times as long as wide 52. arbuscula