SALIX 
4i 
Series x. Phylicifoliae 
Phylicifoliae Fries FI. Suec. Mant. i, 48 (1832) excluding 5 . arbuscula and S. silesiaca ; Du Mortier Prodr. 
12 (1827) nomen; in Bull. Bot. Soc. Belg. 142 (1862); v. Seemen in Ascherson und Graebner Syn. iv, 59 (1908) 
et 130 (1909) excluding 5 . arbuscula ; Rouy FI. France xii, 209 (1910) excluding S. haslata ; Nigricantes Borrer in 
Hooker Brit. FI. 426 (1830) including Bicolores p. 428. 
For characters, see page 29. 
British species and chief hybrids of Phylicifoliae 
12. S. nigricans (see below). Young branches dull, usually more or less pubescent. Laminae 
dull, more or less softly hairy especially when young, with a greater tendency to turn black in drying 
than S. phylicifolia. Nectary usually about one-third or one-fourth as long as the gynophore. 
•S', aurita x YligricCLYlS (p. 43). Differs from S. cinerea x nigricans by the more rugose laminae and 
smaller catkins and capsules. 
S. cinerea X nigricans (p. 43). Laminae up to about 6 cm. long and 2‘5 broad, pubescent. Catkins 
peduncled. 
13. S. phylicifolia (p. 44). Young branches smooth, more or less shining, glabrous at maturity. 
Laminae smooth, usually glabrous, rather shining above, usually subglaucous underneath, usually 
not blackening very much on drying. Catkins usually rather smaller than in S'. nigricans. Nectary 
about one-half or one-third as long as the gynophore. 
S. aurita X phylicifolia (p. 46). Laminae elliptical to obovate, more or less rugose. Catkins rather 
small, on leafy peduncles. 
•S. caprea x phylicifolia (p. 46). Laminae large, up to about 5‘0 — 7’5 cm. long and about 2 - 5 broad. 
Catkins shortly peduncled. 
•S. cinerea x phylicifolia (p. 46). Differs from 5 . caprea x phylicifolia in the duller and more per- 
sistently hairy branches, buds, and leaves. Laminae smaller. 
S. nigricans x phylicifolia (p. 47 )- Plants intermediate between the putative parents. 
12. SALIX NIGRICANS. Plates 42, 43; 34, 44, 46 
Salix nigricans Smith Trans. Linn. Soc. vi, 120 (1802)!; Fries FI. Suec. Mant. i, 52 (1832); Syme Eng. 
Bot. viii, 241 (1868); A. et G. Camus Classif. Saul. 194 (1904); v. Seemen in Ascherson und Graebner Syn. iv, 
131 (1909); Rouy FI. France xii, 210 (1910); S. phylicifolia var. ft L. Sp. PI. 1016 (1753). 
leones : — Smith Eng. Bot. t. 1213; t. 1403, as S. cothiifolia ! ; t. 1404, as 5 . hirta ! ; t. 2342, as S. rupestris\\ 
t. 2343, as S'. andersoniana x ! ; t. 2344, as S. forsteriana * ! ; Borrer in Eng. Bot. Suppl. t. 2709, as S. damascena ! ; 
t. 2725, as S. petraea\; Forbes Sal. Woburn. (1829) t. 37; t. 114, as S. cothiifolia ; t. 1 1 3, as S. hirta ; t. in, 
as S. rupestris ; t. 109, as S. andersoniana ; t. no, as S. forsteriana ; t. 97, as S. petraea ; FI. Dan. t. 1053, as 
S. phylicifolia var.; t. 2553; Reichenbach Icon. t. 573, fig. 2017 [1217]; fig. 2018 [1218] as S. nigricans var. erio- 
carpa\ Hartig. Forst. Culturpjl. t. 115 (41 c), as S. nigricans var. amaniana ; Camus op. cit., Atlas t. 18. 
Camb. Brit. FI. ii. Plate 42. ( a ) Shoot with staminate catkins. ( b ) Barren shoot, (c) Staminate flowers. 
(d) Staminate flower (enlarged). Cambridge Botanic Garden, as S. nigricans var. hirta (R. I. L.). Plate 43. 
(a) Shoot with pistillate catkins. ( b ) Barren shoot. ( c ) Pistillate flowers, (d) Pistillate flowers (enlarged). From 
cutting sent by the Rev. E. F. Linton. 
Exsiccata : — Billot, i960; Fellman, 210, 21 1, as S. nigricans var. borealis ; Fries, v, 62, as S', nigricans \ ar. 
leiocarpa ; vii, 63, as S. nigricans var. borealis ; viii, 62, as S. nigricans var. eriocarpa ; xi, 62, as S. nigricans 
var. angustifolia ; A. et J. Kerner, 11, 12, 13, 34, 64, 65; Leefe, i, 16, et i, 17, et i, 19, et i, 20, as S. nigricans ; 
67, h 4 ) h, 43, iii, 69, iii, 71, iii, 74 as S. hirta ; 68, 69, as S. rupestris ; 70, 71, iv, 91, as S. rupestris ?; 75, as 
1 After George Anderson (d. 1817) who “discovered” the plant “in the Highlands” (Smith, Eng. FI iv, 222 (1828)). 
2 After Edward Forster (1765 — 1849). “Two names more dear than these [Anderson and Forster], to the memory of their 
friends or to botany, can scarcely be recorded in the history of science” (Smith, Eng. FI. iv, 224 (1828)). 
M. II. 
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