Revision Of The Early Oligocene Flora Of Hrazený Hill (Formerly Pirskenberg) In Knížecí Near Šluknov, North Bohemia
Author
Kvaček, Zlatko
Charles University in Prague, Faculty of Science, Albertov 6, CZ - 128 43 Praha 2, the Czech Republic; e-mail: kvacek @ natur. cuni. cz;
Author
Teodoridis, Vasilis
Charles University in Prague, Faculty of Education, Magdalény Rettigové 4, CZ - 116 39 Praha 1, the Czech Republic; e-mail: vasilis. teodoridis @ pedf. cuni. cz;
Author
Zajícová, Jana
Charles University in Prague, Faculty of Science, Albertov 6, CZ - 128 43 Praha 2, the Czech Republic; e-mail: jana. zajicova @ natur. cuni. cz.
text
Acta Musei Nationalis Pragae Series B
2015
2015-10-31
71
1 - 2
55
102
http://dx.doi.org/10.14446/amnp.2015.55
journal article
10.14446/AMNP.2015.55
2533-4069
13182943
Tetraclinis salicornioides
(
UNGER
)
KVAČEK
Pl. 1, Fig. 8–10, Pl. 2, Fig. 2–3
1847
Thuites salicornioides
UNGER
, p. 11, pl. 3, fig. 1–4.
1961
Libocedrus salicornioides
(
UNGER
)
HEER
; Knobloch, p. 251, pl. 1, fig. 12, pl. 14, fig. 9.
1989
Tetraclinis salicornioides
(
UNGER
)
KVAČEK
, p. 48, pl. 2, fig. 3, 10, 12, 14.
Knobloch (1958
, as
Libocedrus salicornioides
) described some of the recovered remains as follows (translated from Czech): “Leaves on the twigs strongly adpressed, so that they look as if fused, forming the twig itself. They are approximately rhombic in form. The wider end bears a blunt tip, or it has projections on both sides and a medial small depression, where the next leaf is attached, or it is semicircular with six small projections. The leaves are scaly and show 2–6 (mostly 3) longitudinal ribs. They are verticillate and vary in size, the smallest being
2 mm
long, the longest
12 mm
.” The newly obtained epidermal structure matches other records of this conifer from North
Bohemia
(see e.g.
Kvaček 1989
,
Kvaček et al. 2014
).
D i s c u s s i o n. Numerous specimens at hand have yielded cuticle structure and
one specimen
removed from rock shows even the typical stomatal topography of this species. It widely differs from the xeromorphic disposition of stomata in the narrow areas sunk between leaves in
T. brachyodon
(
BRONGNIART
)
MAI
et
WALTHER
(
Kvaček et al. 2000
)
.
M a t e r i a l. Short fragments of twigs, many isolated segments, NM-G2810, NM-G8584, NM-G11495b, c, NM-G11496a, b, NM-G11507, EK 240–245, further specimens not numbered.