Salicacese. 
353 
folia) Wimm.—Eastern Alp.; "W. T. (Rhone-glacier, Alp. 
of Bex, Martinets). 6- . . albicans Bonj. (1809) 2019. 
II. Male plants. 
1. The 2 filaments of the stas united to various heights 
(often up to the top), rarely free. Anthers red, yellow 
after shedding their pollen, and finally blackish. Full- 
grown Is gen. glabr.: purpurea, ccesia. 
— Stas 2—8, free, or at most united in their lower half, 
hut then the anthers are yellow and the Is hairy 2 
2* Stas 4—8: pentandra. 
— Stas 3: triayxdra. 
Stas 2 ......... <5 
3. Catkins terminal. Dwarf alpine shrubs ... 4 
— Catkins lateral ....... 6 
4. Ls long-petioled, glaucous and net-veined underneath; 
reticulata. 
— Ls short-petioled, of almost the same green on both 
side 8 . . . . . . . . . 
5. Anthers red. Scales blackish red: Myrsinites. 
— Anthers yellow. Scales rather pale: retusa , serpyllifolia , 
herbacea. 
6 (3). Scales concoloured, greenish yellow, or greenish. Ls 
narrow (1 : 4—10).7 
— Scales 2-coloured, brownish or blackish at the top 8 
7. Catkins sessile, preceding the ls. Filaments of the stas 
hairy, united below: incana. 
— Catkins on leafy stalks, appearing with or after the ls. 
Filaments of the stas glabr., free: alba, fragilis. 
8. Ls very narrow, 1 : 8—10, gray- or whitish-tomentose 
underneath. Catkins sessile, preceding the ls . .9 
— Ls broader 1 : 1—5. 10 
9. Filaments of the stas free. Catkins straight: viminalis. 
— Filaments of the stas united. Catkins arched: incana. 
10. Full-grown ls glabr. on both sides. Filaments of the 
stas glabr. ........ 11 
— Ls more or less hairy, at any rate underneath . 14- 
11. Catkins entirely sessile, very large and very villous. 
Branches covered with a bluish bloom: daphnoides. 
— Catkins on leafy stalks Branches without the bloom 12 
12- Scales long-villous, with very white, finally crisp, hairs: 
hastata. 
— Scales with straight hairs ..... 13 
13. Ls green on both sides, net-veined, shining: Myrsinites. 
— Ls more or less glaucous underneath: phylic ifolia, Arbus- 
cula, Waldsteiniana. 
14 (10). Ls small, gen. lanceolate, silvery-silken underneath. 
A dwarf shrub growing on peat-moss : repens. 
