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263
mile, Giiters. from “that of tiecrest of=the lear
ihroush a less distinctly servate arrangement
OL the cells and the occurrence of stomata.
Sciadopitys verticillata Sieb. et Zuce.
The vegetative system is built up of long shoots and short
shoots. The short shoots may be characterized as symphyllods or
“double needles“. On the dorsal as well as on the ventral side of the
double needle there is a median furrow or groove. In the groove of
the under side, which is covered with papillae, the stomata are
visible, lying longitudinally and in more or less irregular rows.
The margins of the stomatiferous groove is characterized neither
by a specially marked cuticular cushion nor by an accumulation
of papillae. The stomata are characterized by the presence of
"Vorhof and central pore (fig. 1). The 8—12 subsidiary cells
each bear a papilla, which folds up over the stomatic aperture.
Occurrence: the mountain forests of Japan.
Geological age: recent.
Sciadopitys tertiaria Menzel.
MENZEL described this species from Herzogenrath near Aachen
(Germany) under the generic name Sciadopitys. He found young
strobili, isolated bracts and fragments of double needles. I have
studied the anatomy of the double needles and found them to agree
very closely with the symphyllods of the recent species (fig. 2 c
This is true also in regard to the structure of stomata, which I
e).
have studied in surface view as well as in sections.
Occurrence: Klärbecken and Herzogenrath: Western Germany;
Kokoschütz: Silesia.
Geological age: Upper Pliocene
Lower Miocene.
Sciadopitytes Eirikiana (Heer), comb. nov.
This species was first erronously described by HEER (1874) as
belonging to Pinus. Only double needles, 18—24 mm in length
and 1,5—2 mm broad, have been discovered. On the one side
there is a median stomatiferous groove, whose margins are charac-
terized by an accumulation of papillae. The stomata are most
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