Taxodium dubium (STERNBERG) HEER

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

Taxodium dubium (STERNBERG) HEER

Pl. 1, Fig. 6–7, Pl. 2, Fig. 1

1823 Phyllites dubius STERNBERG , tent., p. 39, pl. 36, fig. 3.

1855 Taxodium dubium (STERNBERG) HEER , p. 49–50, pl. 17, fig. 5–15.

1961 Taxodium distichum miocenicum HEER ; Knobloch, p. 250, pl. 2, fig. 8, pl. 10, fig. 2.

1976 Taxodium dubium (STERNBERG) HEER ; Kvaček, p. 290, fig. 5–7.

The Taxodium twigs from Knížecí were described by Knobloch (1958) as follows (translated from Czech): “Leaves are acicular, entire-margined and acuminate at the apex, with a clearly distinct midrib. They are attached very regularly at angles of ca. 45° on either side of the twig axis. The longest twig reaches 12 cm.” The twigs are on the average 60 mm long and 7 to 19 mm wide. Kvaček (1976, fig. 7b) was able to prepare the cuticle from one of the twigs from Knížecí previsouly published by Knobloch (1961, pl. 2, fig. 8, as Taxodium distichum miocenicum HEER ) and interpreted it as ordinary epidermal structure of Taxodium dubium with stomata mostly transversally orientated to the leaf length.

D i s c u s s i o n. Similar twigs from Seifhennersdorf exhibited only poorly preserved epidermal structure ( Walther and Kvaček 2007). According to Kunzmann et al. (2009), the European Oligocene populations of Taxodium belong to the same fossil species as occurring in the European Neogene and differ only in details of the cone scales.

M a t e r i a l. Leafy twigs, NM-G2815a, b with cuticle,

NM-G2892, EK numerous specimens without number.