224 R IK ARD STERNER 



valuable assistance from a large number of persons: in fact, I have had the 

 advantage of obtaining such help from more than a hundred persons. To all 

 these I beg to express my warmest thanks for their great kindness towards me. 

 Unfortunately space does not admit of my adding in this place a list of all these 

 collaborators; but I hope to have an opportunity of doing so in a special part 

 of this work which will appear before long. But I beg to mention with special 

 gratitude some persons who have in a specially high degree made possible the 

 present enquir}- by permitting me to make use of their extensive, but still un- 

 published, lists of locahties for large areas, namely: Docent G. Samuelsson (Da- 

 larne and Vastmanland), Phil. Mag. Erik Almquist (Uppland), Phil. Kand. HARD 

 AV Sec.EKSTAD (western Smaland, northern Skane, and south-eastern Vastergot- 

 land), Statsgeolog Harald Johansson (north-western Skane, western Blekinge, 

 certain parts of Vastergotland and Tjust etc.), and Telegralkommissarie C. E. 

 GusTAFSON (the Vastervik district). The late Lector F. Ahlfvengren I hold in 

 grateful memory for having permitted me to make use of his splendid list of plant 

 localities in Halland, which has been placed at my disposal in manuscript. 



In the laborious work of compiling lists of plant localities from museum herbaria 

 several persons have had the kindness to give me assistance. I have to thank 

 most warmly Professor jENS HOLMBOE (Bergen), ROLF NORDHAGEN, Ph. D., and 

 Conservator OVE Dahl (Christiania), Conservator O. R. HOLMBERG (Lund), and 

 Docent W. BRENNER (Helsingfors). I must also thank most cordially Lector J. 

 A. Z. Brundin, who has gone through N. J. Scheutz's herbarium and lists at 

 Vaxjo, and Phil. Stud. K. A. Nannfeldt, who has performed the tedious task of 

 making a list of the plant localities in the comprehensive collection of the Lin- 

 koping Botanical Society. 



Mr. Selim Birger, Med. Dr., of Stockholm, has laid me under a deep debt of 

 gratitude, by placing at my disposal his well-stored library of phytogeography 

 and by giving me much good advice and information. 



Professor Hj. HjELT, of Karkku, Finland, has earned my warmest thanks through his 

 kindness in letting me see the as yet unpublished parts of* Conspectus Florae Fennicae». 



A considerable amount of field work is included in this enquiry, carried out 

 in the course of extensive journeys in dififerent parts of South Sweden. These 

 journeys have been rendered possible by liberal grants of money, for which I 

 hereby return thanks to the following societies, associations and institutions: the 

 University of Upsala (the Bjurzon Fund), the Royal Academy of Science, the 

 Swedish Society for Anthropology and Geography (the Hedin P^und), the Society 

 of Natural Science Students at Upsala and its Botanical Section. 



I must respectfully express my thanks to the Swedish Society for Anthropology 

 and Geography, and especially to its president. Professor GUNNAR Andersson, 

 for valuable help and many facilities with regard to the printing of this work. 



