414 RIKARD STERNER 



almost the whole of S. and M. Russia. On the other hand, the species nowadays 

 seems to be observed very seldom. Perhaps the older statements concern finds of fossil 

 nuts or cultivated specimens. Accord, to 53 the species occurs in several places in 

 the basin of the Dnjepr at Minsk, Mogil. (Komel), Volh., Kiev, and Chernig. I have 

 also seen more recent reports from Khark.: the neighbourhood of Koupjansk (8), 

 Taurida: at the mouth of the Dnjepr (54), Pensa: Syri (74), in the Lower Volga (85), 

 Courl.: in the Lake Klauzan, S. of Jacobstadt (Lehmann, Kupffer etc.). — From SE. 

 Europe the species extends its area westwards with scattered occurr. in S. and C. 

 Europe, reaching in W. to C. France: the depart, of Maine-et-Loire and Sarthe. In 

 these regions, however, it may often be cultivated or a relic of former cultivation. See, 

 especially as to the Swed. distrib., Malmstrom 1920 and the publications cited in this 

 paper. — D. T. jl: 4I. 



10. SPECIES OF MOOR-ASSOCIATIONS. 



\Belula hnmilis Schrank.] — M. Russia (see Koeppen 1889); I have seen the following 

 recent reports: in N. to S. Petrogr. (43), E, Novg. (4, 20), SW. Archang. : the Shen- 

 kursk-distr., about 62° (40), W. Vologda: the Velsk-distr. (58), Yarosl. and Kostr. 

 (Koeppen), Vladim. (13), NW. Kaz., N. Perm; in S. to N. Orenb., NE. Ufa, Ryaz. 

 (Koeppen), E. Tula (16), Orel (68), Kursk and Chernig. and Kiev (Koeppen), Volh. 

 (53). — In N. Poland and N. Germ. I, in S. and W. to NE. Posen (Mogilno, Brom- 

 berg, Czarnikau), Brandenb. (Arnswalde, Oranienburg), Lauenb. — In C. Europe a 

 number of occurr. in the prae-Alpin regions: Upper Bav., Baden, Wiirtemb., and at 

 St. Gallen in Switzerl. — In the Scandin. North in SE. Swed. : NE. Smal. at Forserum 

 (r only formerly; cf. Svensk Botan. Tidskr. 1909, pp. (8), (13), (159), (162); and 1915, 

 p. 470). — D. T. Ill: 1 — 2. 



Ledum pahtstre L. — N. and M. Russia, in S. to NW. Kiev (53), SW. Chernig. 

 (44), N. Orel (68), N. Tamb. (in S. to Morshansk; 42), C. Simb., E. Ufa. — Its W. 

 limit does not extend beyond the E. part of C, Europe: the C. Carpath. [It is said 

 to have been found recently in E. Alps], Bohem., the Kingd. Sax. (to about the Elbe 

 and the Moldau in W. ; isolated, however, at Jena, Neustadt a. d. Orkla, and Schleiz), 

 SE. Hanover, Lauenb., Liibeck. Denm., o. Almost the whole of Swed. (in S. Swed. 

 considerably less abundant in SW. than in NE., ct. p. 375); in Norw.: in the SE-most 

 part a few occurr. in the neigbourh. of the Swed. border, in the N-most part pretty 

 abundant in Inner-Finmark and in the valley of Reisen in Tromso Amt.; in Finl. 

 throughout the country. — D. T. Ill: i c. 



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