Salix Salix, Nasarov

61. S. rossica Nasarov View in CoL in Komarov, Fl. URSS. 5: 135 (1936).

Twigs rather slender, switch-like, pale brownish or yellowish, usually glabrous. Buds obtuse, larger than in 60. Leaves narrowly oblanceolate, with narrow rounded base, somewhat hairy above, greyish-green, not very densely covered with hairs, usually silky, shining, with prominent glands along the reflexed margin; lateral veins 15-30 pairs. Catkins appearing with the leaves. Style short, thick, usually shorter than the stigmas. U.S.S.R. Rs (N, B, C, W, E).

S. pseudolinearis Nasarov in Komarov, Fl. URSS. 5: 137 (1936) from C. & E. Russia is doubtfully distinct. It has leaves 0-2-0-4(-0-6) cm, narrowly linear-lanceolate, silky on both surfaces, glabrescent above, with wide reflexed margins and short almost entirely black bracts.

Plants showing intermediate characters between 60 and 39-42 occur quite frequently, mainly in W. & N. Europe. They have in common long leaves, more or less silky beneath, with many lateral veins, all characters inherited from S. viminalis . Three taxa are often referred to by binary names because their parents are not known with certainty, and must be mentioned here, since they behave like species (vide R. D. Meikle, Watsonia 2: 243-8 (1952)).

1 Leaves 9-11 x 2-5-4 cm, broadly lanceolate-ovate; stigma shorter than style S. x calodendron 1 Leaves 10-13 x 1- 5-3 cm,narrowly lanceolate; stigmaaslongas or longer than style

2 Bractslightbrown,acute; leavesl- 5 - 2-5cmwide,silky-

pubescent beneath S. x stipularis 2 Bracts dark brown, subobtuse; leaves 2-3 cm wide, thinly pubescent or subglabrous beneath S. x dasyclados

S. x calodendron Wimmer, Salices Europ. 187 (1866) (5. acuminata Sm., non Miller). Often cultivated and escaping. [Br?Da Ge Hb.]

S. x stipularis Sm. in Sowerby, Engl. Bot. 17: t. 1214 (1803). Cultivated and occasionally escaping. [Br Ge Rs (W).] (Possibly S. atrocinerea x viminalis .) S. x dasyclados Wimmer, Flora (Regensb.) 32: 25 (1849). Cultivated and occasionally escaping. [Au Cz Da Ge Ho Po Rs (N, C, E) Su.] (Possibly 5. caprea x cinerea x viminalis .)