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265
frequently orientated transversely. They generally possess 6 non-
papillate subsidiary cells, 2 polar and 4 lateral ones.
Occurrence: Kome and Ekkorfat, Greenland.
Geological age: Lower Cretaceous.
Sciadopitytes Hallei, sp. nov.
Discovered among double needles of Sciadopitytes Crameri. The
double needles of S. Hallei are 39 mm long and ca 3 mm broad.
On the under (?) side we find a broad median stomatiferous groove,
which lacks papillae and whose margins are not so very conspi-
cuous. The non-stomatiferous groove of the upper (?) side of the
symphyllodium or double needle is very distinct. The stomata
occur in longitudinal rows. The number of subsidiary cells is
4—6 (always 2 polar ones).
Occurrence: Ekkorfat, Greenland.
Geological age: Lower Cretaceous.
Sciadopitytes Olafiana (Heer), comb. noy.
This species was erronously described by HEER (1874) under the
generic name Pinus. The double needles of S. Olafiana are ca
34 mm long and 3 mm broad. On the one side there is a median
stomatiferous and papillate groove. The stomata occur in longi-
tudinal rows and the number of subsidiary cells is 6.
Occurrence: Ekkorfat, Greenland.
Geological age: Lower Cretaceous.
Sciadopitytes Nathorsti Halle.
HALLE (1915) has given a detailed description of this species
from Atanekerdluk. Later on (1920) JOHANSSON discovered it in a
collection of jurassic plants from Andö, Norway. Further I have
found the same species at Kome.
Occurrence: Atanekerdluk and Kome, Greenland; Andö, Norway.
Geological age: Middle Cretaceous — Upper Jurassic.
Sciadopitytes? Staratschini (Heer), comb. nov.
HEER (1874) has described this species as Pinus. It is, however,
probably a species of Sciadopitytes. The state of preservation un-
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