232 KNUr tMGRl 



Meriel, Y. (1962). Les oscillations des climats de la zone aride dans le dernier million 



d'annees. La Nature 1962, 67-74. 

 NoRDHAGEN, R. (1933). De senkvartoere klimavekslinger og deres betydning for kultur- 



forskningen. Inst. SammenJ. Kulturforsk. A. 2. Oslo. 

 Nydal, R. (1960). Trondheim natural radiocarbon measurements II. Amer. J. Sc. Radioc. 



Suppl. 2, 82-96. 

 OuREN, T. (1959). Om skipsfartens betydning for Norges flora. Blyttia 17, 97-118. 

 Sernander, R. (1936). Granskar och Fiby urskog. Acta Phytogeogr. Suec. 8, 1-232. 

 Sterner, R. (1938). Flora der Insel Oland. Acta Phytogeogr. Suec. 9, 1-170. 

 Wendelbo, p. (1957). Arter og hybrider av Centaurea underslekt Jacea i Norge. Univ. 



Bergen Arbok 1957, Natiirv. rekke 5, 1-29. 



After this paper was set, the following publication has come to my knowledge: 

 Tolmacev, a. I. and O. Rebristafya. O geograficeskom rasprostranenii Crepis multisaulis 

 Ledeb. i o zabytom vide Crepis gnielini (L.) Tausch. Bot. mater, gerb. bot. inst. B. L. 

 Koiuarova Ak. N. SSSR 21, 402-415, which shows that the subspecies of C. multicaulis 

 previously found in Norway has actually been found at the former border of the Ice Age 

 ice sheet in Siberia. 



