Distribution: Northern and middle Europe, southwards to France, Switzerland 

 and Austro-JIungary, Siberia, in the Yenisei valley northwards to 69° north lat, east- 

 wards to Kamtchatka, northern Mongolia, the Amoor Province, Sakhalin, Japan, North 

 America, Greenland. 



Vaccinium Myrtillus L. Spec. PI. ed. II (1762) p. 498; Ledeb. Fl. Alt. II, p. 66; Tur- 

 czan. Cat. Baical. no. 758; Karel. et Kiril. Enum. Pi. Fl. Alt. no. 574; Ledeb. Fl. Ross. II, 

 p. 902; Turczan. Fl. Baical.-Dahur. (1848) p. 4S8, no. 737; Herder, PI. Radd. (1872) p. 314, 

 no. 19; KpBiji. 4>ji. Am. Ill (1904) p. 784; Ky3He^0B1., BepeCKOBbia bt. <E>eA<ieHKO, $ji. Asiax. 

 PocclH 9 (1916) p. 67. 



Common in the subalpine taiga along the rivers Amyl, Sisti-kem, and Bei-kem. In 

 the Altaian found by me at an altitude of about 1800 m. above sea-level, flowering and in 

 part past flowering at the end of July. The fruit ripens in subalpine regions at the end of 

 July and the beginning of August. 



Distribution: Europe, except the southern parts, Caucasia, the north of Asia Minor, 

 Siberia, in the Yenisei valley northwards to 68° 35' north lat, eastwards to Kamtchatka, 

 northern Mongolia, North America. 



Vaccinium uliginosum L. Spec. PI. ed. II (1762) p. 499; Turczan. Cat. Baical. no. 759; 

 Ledeb. Fl. Ross. II, p. 904; Turczan. Fl. Baical.-Dahur. (1848) p. 488, no. 738; Herder, PL 

 Radd. (1872) p. 319, no. 25; Kptiji. $ji. Ajit. Ill (1904) p. 785; Ky3He^0B'B, BepecKOBBia n-h 

 OeftiieHKO, $Ji. AaiaT. Pocciii 9 (1916) p. 70. 



The specimens collected by me in various localities in the Sayansk district, dif- 

 fer distinctly from the Scandinavian ones in having the branches completely glabrous, 

 and always destitute of the fine, short hairs covering the year's shoots in the typical plant. 

 By an exact examination of what is to be found of Norwegian and foreign material of 

 this species in the herbarium of the University at Christiania, I have found the pubescence 

 on the year's shoots to be an absolutely unalterable character for European specimens 

 of Vaccinium uliginosum. These completely glabrous specimens from eastern Siberia are 

 separated by me as 



subspec. imberbe nov. subspec. 



Hamuli novelli semper omnino glabri. nilidi, nunquam ut in forma typica 

 pubescentes; baccae breve stipitatae, pedunculi tanlum 1 — 2 mm. longi ; folia cum 

 ceteris comparata angusia. 



The specimens at hand are, besides, distinguished by having the pedicels very short, 

 only one to a few mm. long, and the leaves frequently somewhat broader, more equally 

 broad, rather suddenly narrowed towards the base. This one is rather frequently to be 

 met with in the taiga territory, and is also very common in the Altaian, in turfy bogs, 

 etc., near the limit of tree vegetation. The fruits ripen at end of July and the beginning 

 of August. The typical species does not occur in my collections from the Sayansk district. 



Distribution: The species is distributed in northern and middle Europe, southwards 

 to middle Spain, middle Italy, Turkey, northern and middle Russia, Caucasia, Siberia, in 



343 



