Quercus sp.

Teodoridis, Vasilis, Kvaček, Zlatko, Radoň, Miroslav, Raprich, Vladislav & Bruch, Angela A., 2020, A New Oligocene Flora From Ludvíkovice Near Děčín (České Středohoří Mts., The Czech Republic), Fossil Imprint 76 (2), pp. 297-314 : 302

cf. Quercus sp.

Pl. 2, Figs 4–6

M a t e r i a l. 2 complete leaves and 1 incomplete leaf, impressions PA 1632, PA 1639, PA 1646.

D e s c r i p t i o n. Leaves widely elliptic, incomplete leaf obovate, 50 mm to 61 mm long, 34 to 39 mm wide, apex acute, base widely cuneate, margin simple dentate, teeth acute, sinus rounded, venation craspedodromous, secondary veins thinner, slightly curved, alternate, originating at 40° to 60°, tertiary veins alternate to opposite percurrent, straight to sinuous, venation of the higher orders regular polygonal reticulate, areolation well-developed, 3 to 4 sided, veinlets lacking.

R e m a r k s. The acute to short spiny teeth show an affinity to Quercus , however the widely elliptic outline is not typical for Fagaceae and may also resemble Betulaceae (see below). Relatively common leaves described as Quercus lonchitis UNGER (typified in Sotzka – Unger 1850, also occurring in Seifhennersdorf, Suletice, Lochočice and Stadice – Walther and Kvaček 2007 ) show similar features of the margin, however, the leaf outline is more elongate. Generally, the studied leaves also resemble the stratigraphically younger morphotypes of younger Quercus drymeja UNGER and Q. mediterranea UNGER. The incomplete obovate leaf (PA 1646) may morphologically resemble the basal part of “roburoid” oaks.