|j») MORTKN T'. r<illSll.li. 



j 117. Salix ^roenlandica (Am».) Lindsth. iS. arctica var. \i ii.). 



Il) moisl soil. In Ihi^'.>^ ;im(I moist hoatli. ;il waln -((nirsps, oftfii in 

 riviT-dt'Itas \va.><li<Ml dowri Ironi alpint' hahitals; asccruls I lir liills tullow- 

 iii«; llif rixt'rs from lin- ijlariors and tlir snow-tidds. 



<>ftcii pioiK'cr oii it'cciil ly di'nudiMl ninraine or ;illiivial soil. 



\vY\ roinnion I lirouLrlioiit tin- wliolc ;iroa. 



W'idfly distiiituti'd in WV.'^I ('ir'ct'nland. withoiit soiitli limil: in 

 llif i'xtnMiic Mortli pcrhaps icplact'd by ollicr varicties ol' A. arrlica. 



[iu\vv id('nli«*al conditions this species llowcis hcfoif llic follow- 

 ini; and is ahundantly IVnilini^. 



Norni.illy covered by snow and ol'ten by Ibe ice ol' lln' sprinijs; 

 prrhaps snnw-lt'ss now ;in<l (bon \vb(>n um'ow inii: f>n tb«' bilis. 



j MS. Salix glauca L. 



Koi-niini; copscs in placcs l'a\()iii;ibly t'xposed lu Ibc siin. il" only 

 ijbimdantly »(ncifd by caily int'Hinij: snow, and pro\id»'d Ihe followinti 

 suninnTs bcinij warni and danip. I bii^ ofteii on tbc siinny sidr of rocky 

 walls, tbcsc lyinij sbeltered from Ibc wind. 



Bosides il is ahvays present in tlie beatb-vegetation, botb in Ibc 

 dry part and in Ibe nioisl. It is to bf loiind in l)Ogs riifjit down to tbe 

 lake-sbores and is sometiines growinij: in Ibc most di'y and bari-en piaces, 

 (bines, gravel ainong boniders and stoncs, on rock-ledges and in crevices. 



\'ery freqnently iiscd as liiel by Ibc nali\'cs. Tbc bnsbes are piillcd 

 iip in tbc summer and stacked to diy lor tbc winlci-. 



Very eommon Ibrougbont tlie wbole arca. 



Widely tlistributcd in \\'est GriMMiland witboiit sontbcni limit. Ibc 

 nortb-liinil is nol known, bul iindoiibtcdiy lo be searcbcd l'or nortii 

 t.r HV\ 



Abundanlly flowci-ing mid IVniting. c.vccpl in tbc niosl biiiicn 

 place.s. 



In iiiJiny piaces snowlcss. lin! hi Ibc copses tbc siio\v-co\ci' is 

 absolut i'ly necessary. The long shoots. projccting abovc tbc snow. ;ire 

 Msnally dying, Ibe copses I lins resembling <lipj)cd licdges. 



Nevertbeless the copse- and espalici-willow is ;iblc lo stand I le 

 iiiL'lit-frctst, evcn wbcn Ibc buds hikI sbools ;iic dcnndcd ol snuw. il 

 ordy Ibc growlb of tbcsc bavc nol vel bcgiin. 



I lic \\\ iJoNvs o f (irecn I ;i n d hh- iiiiicb vjirying, especially .*>'. glaiica 

 • oc. \. <iroetilnndira. \ greal pari of tbe variations are directly depen- 

 dent on Ihe rpiabty of babitat, and varions parts of the same specimen 

 ..fi..T, |.;.i .. v;,,-ioiis forms of leaves. But bcsidcs tbcsc variations tlicre 



