Dryas oclopetala L. Spec. PI. ed. II (1762) p. 717; Ledeb. Fl. Alt. II, p. 267; Turczan. 

 Cat. Baical. no. 399; Karel. etKiril. Enum. PI. Fl. Alt. no. 291; Ledeb. Fl. Ross. II, p. 20; 

 Turczan. Fl. Baical.-Dahur. (1843) p. 598, no. 390; Kpti.T. $.i. Ajit. II (1903) p. 355. 



Common in the Altaian, in places grown with lichens and mosses, where I have col- 

 lected it with ripe fruits at the end of July. All of the specimens collected here are cha- 

 racteristic in having the glandular hairs on the calyx and on the upper parts of the scape 

 yellow or copper-coloured, never black, as is the case with the Scandinavian specimens 

 with which I have compared them. In all of the North-european authors mentioning the 

 colour of this glandular hairs, they are recorded to be black (Blytt, Hartman, NeUman), a 

 character which must thus be considered to be distinctive and invariable. The glandular 

 hairs to be found right up to the summits of the sepals therefore give those occur- 

 ring in my material a lighter yellow or brownish colour, not black as in the Scandina- 

 vian specimens. They also differ somewhat in shape, tapering gradually upwards from a 

 broader base, while the Scandinavian ones are more equally broad throughout their 

 length, only tapering towards the summit. The fruits when ripe, are of a deep green, 

 like the prolonged styles. Besides, there is a difference which seemed to prevail, being 

 also mentioned already by Turczaninow, 1. c, viz. that the veins on the under sides of 

 the leaves are always glabrous, not pubescent, whereby appearing much more distinctly 

 than in the Scandinavian specimens, where the veins are generally lanate so at to 

 merge into the white-canescent under side of the leaf. 



Distribution: Arctic islands, arctic and alpine regions of Europe, the Caucasus, 

 arctic Siberia, and on the high mountains to the south, northern Mongoha, North Ame- 

 rica, Greenland. 



Crataegus sanguinea Pall. Fl. Ross. I, p. 25; Ledeb. Fl. Alt. II, p. 221; Turczan. Cat. 

 Baical. no. 445; Karel. et Kiril. Enum. PI. Fl. Alt. no. 327, 328; Ledeb. Fl. Ross. II, p. 88; 

 Turczan. Fl. Baical.-Dahur. (1843) p. 639, no. 436; Kpwj. $ji. Ajit. II (1903) p. 424. 



Common on islets in the rivers Yenisei and Abakan, where the shrubs attain a 

 height of 2—3 m. Flowering at the beginning of June. The thorns to 3,5 cm. long, the 

 leaves deeply indented; the specimens collected accordingly belong to /. incisa Regel 

 (Act. Hort. Petropol. I (1871) p. 116. Also to be found scattered about Kushabar. 



Distribution: Eastern Russia, Siberia, northwards to 61° north latitude, Mongolia, 

 Turkestan, eastern Asia, Sakhalin. 



Cotoneaster melanocarpa (L.) Loddiges, The Botan. Cabinet XVI (1828) t. 1531; 

 Cotoneaster vulgaris fi melanocarpa Ledel). Fl. Alt. II, p. 219; Turczan. Cat. Baical. no. 

 446; Karel. et Kiril. Enum. PI. Fl. Alt. no. 329; Ledeb. Fl. Ross. II, p. 89; Turczan. Fl. Bai- 

 cal.-Dahur. (1843) p. 641, no. 437; KpM.i. (fji. A.1T. II (1903) p. 425. 



Common in the tracts about the rivers Yenisei and Abakan, frequently on sunny 

 hills, here and there accompanying Caragana arborescens. The species begins flowering 

 at the beginning of June. In the Urjankai country I have found it between Tshebertash 



292 



