Hoffm. 1. c; Turczan. Cat. Baical. no. 551; Ledeb. Fl. Ross. II, p. 361; Kptiji. 3>j. Ait. II 

 (1903) p. 542. P. kamischaticum Hoffm. 1. c; Ledeb. Fl. Ross. II, p. 361. 



Common on islets in the river Abakan, in shady meadows and open brush-wood, 

 where it begins flowering in the last days of June. I have also found it in the Urjankai 

 country, near the Sisti-kem, and on the Kamsara, on declivities near the river, nearly past 

 flowering in the first half of August. 



Distribution: Central and eastern Europe, westwards roughly to Switzerland, nearly 

 throughout Siberia, in the Yenisei valley northwards to 69 H° north lat, Kamtchatka, 

 northern Mongolia, Manchooria, Sakhalin, Japan. 



Cornaceae Link. 



Cornus alba L. Mantissa (1767) p. 40; Ledeb. Fl. Alt. I, p. 150; Turczan. Cat. Baical. 

 no. 556; Ledeb. Fl. Ross. II, p. 379; Turczan. Fl. Baical.-Dahur. (1845) p. 299, no. 544. C. 

 sibirica C. A. Meyer, Mem. Acad. Petropol. V, p. 206; Eptu. $ji. Am. 11 (1903) p. 545. 



Very common on islets in the rivers Yenisei and Abakan, where forming copse 

 wood to about 3 m. high, and where it begins flowering in the early days of June; more- 

 over, found scattered near Kushabar, and on islets in the Bei-kem and Ulu-kem, and also 

 on the river-banks, where I have collected it with fruits in the second half of August 



Distribution: North-eastern Russia, throughout Siberia, northwards, about the river 

 Ob, to 64° north lat., northern Mongolia, northern China, Manchooria, Sakhalin. 



Pyrolaceae DumORT. 



Pyrola rotundifolia L. Spec. PI. ed. II (1762) p. 567; Ledeb. Fl. Alt. IL p. 99; Bunge, 

 Enum. Alt. p. 20; Turczan. Cat. Baical. no. 750; Ledeb. Fl. Ross. II, p. 928; Turczan. Fl. 

 Baical.-Dahur. (1848) p. 505, no. 752; Herder, PL Radd. (1872) p. 356, no. 54. P. rotun- 

 difolia L. a albiflora KptuE. Oi. Ajtt. HI (1904) p. 796. 



Scattered in the Amyl taiga, in coniferous forest. In full flower in the middle of 

 July. 



subspec. incarnata DC. Prodrom. VII, p. 773; Ledeb. Fl. Ross. II, p. 928; Turczan. 

 1. c. (1848) p. 506; Herder, 1. c. (1872) p. 357; Kptut. $j. Ajit. 1. c. (1904) p. 796. 



This subspecies, considered by some as a distinct species, much recalls the pre- 

 ceding one, but differs by being more vigorous, further by having the thick coriaceous 

 leaves, measuring 4—4,5 cm. in diameter, more or less distinctly cordately incised at 

 the base, and the margin slightly and regularly serrulate. The scape is 30—35 cm. long, 

 with scaly lanceolate — linear bracts, 1—1,5 cm. long, equalling or exceeding the pedicels. 

 Flowers very loose, 8—20 in number, on comparatively long pedicels, 1—1,5 cm. long. 

 The sepals, as well as the petals, are of a reddish purple colour. The present subspecies 

 is frequently to be met with in the subalpine coniferous forest, and also follows the spurs 



336 



