Tetraclinis salicornioides (UNGER) KVAČEK

Kvaček, Zlatko, Teodoridis, Vasilis & Zajícová, Jana, 2015, Revision Of The Early Oligocene Flora Of Hrazený Hill (Formerly Pirskenberg) In Knížecí Near Šluknov, North Bohemia, Acta Musei Nationalis Pragae Series B 71 (1 - 2), pp. 55-102 : 59

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.