SALIX 
5i 
Sand-dunes, especially in damp hollows ; a social plant, sending up shoots through recently blown sand 
which it fixes ; very abundant, for example, on the dunes between Liverpool and Southport. Many records are 
doubtful through confusion with the silvery-leaved form of var. fusca. 
Of the three varieties of S. repens recognised here, var. ericetorum is by far the most variable in leaf-characters, 
and yet it remains distinct from the other two varieties. On the other hand, var. fusca and var. argentea are closely 
allied, and are connected by the silvery-leaved forms of var. fusca. Until the forms of S. repens as a whole have been 
subjected to rigorous cultural experiments, we believe that the subdivisions of the species here adopted are sufficient. 
The three varieties represent three interesting edaphic forms, the first one (var. ericetorum ) typical of siliceous hill-slopes, 
heaths, and moors, the second (var. fusca ) of fens, the third (var. argentea) of sand-dunes. 
In herb. Marshall (no. 3241 et no. 324 2), specimens from Sutherlandshire are named S. myrsmites x repens ; but the Rev. 
E. F. Linton suggests that they are only S. repens. The hybrid in question does not appear to have ever been described. 
S. repens is locally abundant on sandy, gravelly, and the lighter siliceous soils, when acidic 
humus is more or less abundant ; rather rare on moors ; abundant on fens ; abundant and often 
social on sand-dunes ; very rare or absent on clay and on strongly acidic peat ; ascending to 
about 860 m. in Perthshire. Throughout Great Britain, from the Channel Islands, Cornwall, and 
Kent to Zetland; rare or local in the Midland counties of England; local but widespread in 
Ireland. 
Europe (northwards to 63° 28' N. in Norway, and ascending to 1700 m. in the Tyrol); Asia 
Minor to central Asia. 
S. aurita x repens (see page 57); S. caprea x repens (see page 54); S. cinerea x repens (see page 
55) ; S. herbacea x repens (cf. x S. cernua, p. 35) ; S. lanata x repens (cf. page 31)] S. lapponum x repens 
(see page 37) ; A. nigricans x repens (see page 43) ; S. phylicifolia x repens (see page 48) ; S. pur- 
purea x repens (see page 67). 
A. repens x viminalis Wimmer in Denkschr. Schles. Gesellsch. 162 (1853); A. et G. Camus Classif. 
Saul. ii. 128 (1905); v. Seemen in Ascherson und Graebner Syn. iv, 279 (1909); S. angustifolia Fries FI. Suec. 
ed. 3, 285 (1828) non Willdenow ; S. fries iana Andersson Monogr. Sal. 121 (1867). 
leones: — -Reichenbach Icon. t. 2038 [= 1238], as A. angustifolia ; A. et G. Camus op. cit., Atlas ii, t. 7 (40) 
fig. AB — AF' as x A. friesiana. 
Exsiccata : — Fries, ii, 60, as A. angustifolia ; v, 65, as A. angustifolia var. elatior\ A. et J. Kerner (FI. 
Austr.-Hung.) 1470; E. F. et W. R. Linton, 98 (artificial hybrid); Heidenreich (FI. Bor. Or.)-, herb. Marshall, 
1928. 
Shrub or undershrub, from about o - 5 to 1 — 2 m. high. Young branches stouter than in S. 
rosmannifolia. Buds obtuse, hairy. Stipules usually caducous. Petioles short. Laminae lanceolate, 
margin a little reflexed, entire or subentire, larger than in A. rosmarinifolia, up to about 8 cm. 
long and i’2 broad, lower surface usually silvery with hairs. Catkins appearing a little before the 
leaves ; April. Pistillate catkins cylindrical, dense-flowered, much larger than in S. rosmarinifolia, 
up to about 1 ‘5 long or a little more and about a third as broad, on short leafy peduncles. Bracts 
prominent in the catkin, ovate or obovate, hairy. Ovaries usually pubescent, shortly stalked. Style 
long or rather long. Stigmas filiform, reddish. Capsules usually pubescent, stalked ; May. 
Very rare; Sutherlandshire (fourn. Bot. xxxvi, 175 (1898)). 
Sweden and Denmark (doubtfully indigenous), Germany, Austria-Hungary, Russia. 
Series xii. Capreae 
Capreae Koch Sal. Comment. 31 (1828) emend.; v. Seemen in Ascherson und Graebner Syn. iv, 93 
0909) ; Cmereae Borrer in Hooker Brit. FI. 424 (1830); Rugosae A. Kerner op. cit. p. (120); Cinerascentes vel 
Capreae Andersson in DC. Prodr. xvi, pt. ii, 215 (1868). 
For characters, see page 29. 
British species and chief hybrids of Capreae 
15. S. caprea (p. 52). Young branches reddish, glabrous or only slightly hairy at maturity. 
Laminae about half to three-quarters as broad as long, usually apiculate. Catkins broadly oval- 
elliptical. 1 he earliest of the series to come into flower. 
>S. Caprea x cinerea (p. 53). Intermediates between A. caprea and A. cinerea. 
7—2 
