Rit Landbúnaðardeildar : B-flokkur - 01.05.1947, Page 11

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Fig. 7. The geographical distribution of Cakile edentula in Iceland.
TABLE 2. Pollen fertility of population plants of Cakile edentula.
% fertility: 30 40 50 60 70 80 90 100 n M.
No. of plants 6 19 31 49 68 110 327 610 84.38%
4. The geographical distribution.
As a relatively few sheets with Cakile are found in the herbarium of
the Museum of Natural History at Reykjavík, the present writers had to
study most of the distribution of the species in the field as well as in
private herbaria. On the basis of these observations the map, Fig. 7, has
been compiled. On that map most of the localities have been studied by
the writers during the summer of 1946, but to some extent it is made on
the basis of material collected by one of the authors of this pa])er during
the summers of 1931 — 1937. The localities given by Gröntved (1942),
Davíðsson (1939), Johnsen (1941a,b) and Steindórsson (1943, 1946)
are also found on the map.
As shown on the map in Fig. 7 the species C. edentula is especially
frequent on beaches of the south and west coasts of the island, but it
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