Greinar (Vísindafélag Íslendinga) - 01.01.1967, Page 74

CONTENTS
Page
The immigration and naturalization of flowering plants in Ice-
land since 1900, by Ingólfur Davíðsson........................ 1
Abstract ..................................................... 1
Introduetion ................................................. 1
General remarks .............................................. 3
Foreign species recorded in Iceland in the period 1900—1948 4
Foreign species recorded in Iceland in the period 1948—1966 7
Records of foreign species of some selected localities ...... 12
The spread in Iceland of eight foreign species .............. 14
The vascular flora of the outer Westman Islands, by Sturla Frid-
riksson and Björn Johnsen ................................... 37
Abstract .................................................... 37
Introduction ................................................ 38
Topographical features ...................................... 38
Climate ..................................................... 40
Excursion ................................................... 40
Method of research .......................................... 42
Vegetation .................................................. 44
The plant communities ....................................... 45
Plant distribution of individual islands..................... 48
Concluding remarks .......................................... 63
References .................................................. 67
Plates I—IV.