from till.' rrjiinUai louiilrv. Owing lo tlic exliaordiiuuy stale of affairs in the 

 autunin of lUll, \vc were unaljlf lo Iniiig our collcclioiis liomc, but had to leave 

 llieiii in various phices in Silioria. Most of these articles have arrived afterwards via 

 IIh' Art'lic Ocean, across liic nioulh of Ihc Vi'nisci, in ships belonging to the Norwegian- 

 Siberian Trading Company, but sonic arc slill missing. All inquiries have, of course, 

 luulci- the present circumstances, been (juite in vain, and not knowing what has become 

 of the collections, 1 have thonglil it right not lo [nit oft any longer the publication of 

 this paper. 



As to previous investigations of the vegetation of these regions, I refer to the 

 complete list of lili'ralure inserted al Ihc end of liiis paper, also com])rising all works on 

 the adjacent regions and liic w hole Yenisei valley, right up to the Arctic Sea. A survey of 

 the literature only concerning the territory traversed would not be very extensive, these 

 regions being some of the least known of central Asia. The region about Minusinsk 

 is the one best known, and has especially been explored by Maht.ianow. The Urjankai 

 country, on the other hand, has remained, to the very last, a real Icini incognita, 

 nol only in point of botany, but also in every other respect. The meagre botanical infor- 

 mation of this country is to be found in works by Kivilow (1903), Schiscmkin (1909), 

 as well as by Prick and Simpson (1913). 



All that is put down in the following pages, 1 have collected and observed myself 

 on my journey in 1914, and all of the photographs and other illustrations are likewise 

 original. I have, in the following, annexed a series of photographs, as these are rather 

 instructive, and likely to convey a good idea of the general character of the country. 



Nearly all the determinations have been undertaken by myself, partly here at 

 Trondhjem, partly during stays at the Botanical Museum of the Christiania University, 

 and during a stay in Petrograd in the summer and autumn of 1916, with a grant from the 

 University at Christiania. In Petrograd I had the opportunity of examining the rich 

 botanical collections from Siberia in the herbarium of the Imperial Botanical Gardens of 

 Peter the Great, and in the Imperial Scientific Academy. A series of the authentic speci- 

 mens of TuaczANiNOW, Hegel, Ledehour, Meyer and other explorers of Siberia, which are 

 to be found here, have e.specially been of great interest to me. I am, moreover, also 

 indebted to the Museum of Bergen and the Botanical Museum of the Scientific Academy 

 at Stockholm for loan of material for comparison. 



I have, however, occasionally been able to profit by the advice and suggestions 

 of some specialists, such as in Petrograd: Professor Dr. W. Komarow, Professor Dr. 

 B. Fedschenko, Dr. B. Boschewitz, Dr N. Shipszinskv and Dr.W.SuKATCzEW, to all of whom 

 I tender my sincerest thanks. Moreover, I call to mind with especial thankfulness my 

 friend Dr. Iwan Nowopokrowsky for the kind assistance he rendered me at a time when 

 so many difficulties were thrown in the way of foreigners in Petrograd, thus enabling me, 

 under the existing condition of things, to profit richly by my stay there. During the sub- 

 sequent composition of my manuscript here at Trondhjem, he has also been kind enough 

 to lend me from his jirivate library a series of very useful books, which are no more in the 



