Disliilnilioii: Aiclic and alj)iiie ii'L;ii)n.s ol lunopt'. (soulliw aids lo [\iv I'yi-fiiccs, 

 Alps, (",ai palliiaii moiiiilaiiis), Icrland. Spilzljcrf^cn, Novaya Zcmlya, arclic Siberia, 

 hi'lwri'ii ahoiil ()7'/'° — 73'A° norlli laliliidc (DicUsoii llail)()ur). and eastwards to Kaint- 

 clialka. Ilic Altai. Ilic Saxansk dislrifl. l)ail<al and Tiaiis i.aikal iiioiiiilains. lunliicrn 

 Mongolia, arclic America, (irccnland. 



Salix pyrolael'olia I.cdch. I-'l. Alt. IV. p. 270: ■i'lirczaii. Cat. i'.aical. no. UY.Wk Lciicl). 

 ]*"!. Hos.s. III. p. (ii:!: .\iidcrss. Monogr. .SV//fc. I (l<S(i7) p. Kl'.l. no. lOl: Tinc/aii. V\. IJaical.- 

 Dahur. (18M, I) p. .'58.'). no. WM'y. r„Mi.(l)[, lliii.i i;k|,oii. i>,,((ii:II. j). KHi: Kpi.i.i. 'Im. .\.it. 



V (innn) j,. 1221. 



In nioisi meadows, near the banks of tlie I'jjper Sisli-kem. 

 Dislribntion: Nortbern Rnssia, Siberia, norlbern Mongolia. 



Salix cinerea L. Spec. PI. ed. II (1763) p. 1449; Winnner, 'Salic. Europ. p. 47; 

 Anderss. Monogr. .Sa/u-. I (1867) p. 71, no. 44; Ledcb. FI. Ross. Ill, p. 607; Herder, PI. 

 Radd. (1892) p. 400, no. 137; I!iui,(I)b, lliii.i Eiipoa. I'dc.in II, p. 72; Kpi>i.i. *.t. A.it. V 

 (1909) p. 1213. 



In moisl meadows, on an islel in liie river Abakan, near Ust Kamuishto. Willi 

 nearly ripe capsnies in the second half of .kme. 



Dislribntion: Europe, the Caucasus, Asia Minor, Persia, Rus.sian Turkestan, 

 through Siberia and middle Asia lo Kamlchalka, eastern Asia and northern Corea, 

 Sakhalin, North Africa. 



Salix fragilis L. Spec. PI. ed. II (1763) p. 1443; Wimmer, Salic. Europ. (1866) p. 

 19; Anderss. Monogr. Salic. I (1867) p. 41, no. 28; Ledeb. Fl. Ross. Ill, p. 598. 



Some specimens of this one observed by me in the Amyl valle^', near Kushabar. 



Distribution: Europe, south-westei'n Asia, western and middle Siberia, eastwards 

 aboul to the Baikal, Ameinca (introduced). 



Betula roliindifolia Spach. Rev. Beliilac. in Ann. Sc. Nat. Ser. II (1841) p. 194: C'yi.a- 

 qer.b, h"b C'lK'i. C'uu. bepe:)!.— Bi Tpy^. But. jMj;). Ai;a;i,. llayKi, (1911) p. -Jlf). Betula (flandnhmi 

 Michx. Fl. Bor. Amer. II (1803) p. 180; Herder, PI. Radd. (1892) p. 64; Winkler, Beiii- 

 Inc. in Engl. Pflanzenr. H. 19 (IV, 61. 1904) p. 73. Betula nana in Ledeb. Fl. Alt. IV, p. 246; 

 Turczan. Cat. Baical. no. 1062; Turczan. Fl. Baical.-Dahur. (18.54, I) p. 403, no. 1061; 

 Ki)i.i.T. <lu. A.ri. V (1909) p. 1250. Betula nana /J sibirica Ledeb. Fl. Ross. Ill, p. 654. 

 Betula nana /i .sibirica el y intermedia Regel, Monogr. Betulac. (1861) p. 43. 44. 



Common in the Sayansk district, in subalpinc and alpine regions, up to about 

 2000 m. above sea-level, in moist as well as in drier situations. It appears from the 

 material collected that the .species varies considerably in the form and size of the 

 leaves, from 1 to 2 cm. in diameter, as well as in the shape of the teeth. The form of 

 pistillate calkins varies between ovoid and subcylindrical. Collected with nearly ripe 

 fruits al the end of August. 



197 



