Betulaceae, S.F.Gray, 1822

Kovar-Eder, Johanna, Kvaček, Zlatko, Teodoridis, Vasilis, Mazouch, Petr & Collinson, Margaret E., 2022, Floristic, Vegetation And Climate Assessment Of The Early / Middle Miocene Parschlug Flora Indicates A Distinctly Seasonal Climate, Fossil Imprint 78 (1), pp. 80-144 : 86-87

Betulaceae gen. et sp. indet.

Pl. 2, Figs 6–8

2004 Betula vel Alnus sp. ; Kovar-Eder et al., p. 59, pl. 3, figs 3, 4.

A d d i t i o n a l m a t e r i a l. IBUG 729, 738, NHMW 1878/6/2348 (part + counterpart), 2490.

D e s c r i p t i o n. Leaves probably short-petiolate; lamina broadly ovate to slightly obovate, l × w about 40–57 × 29–42 mm, ratio l/w about 1.3–1.6, base rounded to slightly cordate, apex acuminate; margin distinctly regularly double serrate, teeth variable in shape, often pointing exmedially; midvein straight, strong; secondaries craspedodromous, slightly curved and somewhat denser at base, widely spaced, angle of origin wider near base than near apex, exmedial side veins running into marginal teeth; no intersecondaries; tertiaries percurrent/forked-percurrent almost perpendicular to secondaries.

Differing from Betula sp. see that taxon.

Betulaceae vel Ulmaceae gen. et sp. indet. Pl. 2, Figs 4, 5, Pl. 10, Fig. 16

M a t e r i a l. NHMW Ett. 497, Ett. 730, NHMW 1878/6/9678.

D e s c r i p t i o n. Incomplete leaves, petiole not preserved; lamina ovate, l × w about 60–?80 × 24– at least 26 mm, ratio l/w about 2.5, base incomplete, convex, slightly (?) asymmetrical, apex (?) acute; margin double serrate, sinus and apex acute, basal and apical side convex to straight; midvein slender, straight; secondaries craspedodromous, moderately widely spaced, originating alternately, at first converging midvein, then straight, near margin curved upwards running into apices of larger teeth; tertiaries hardly visible, (?) percurrent.

Buxus cf. egeriana BŮŽEK, HOLÝ et KVAČEK Pl. 2, Figs 9–15

2004 Buxus cf. egeriana BŮŽEK, HOLÝ et KVAČEK; Kovar-Eder et al., p. 71, pl. 8, fig. 16.

2004? Buxus cf. egeriana BŮŽEK, HOLÝ et KVAČEK; Kovar-Eder et al., p. 71, pl. 8, fig. 17 (non fig. 15).

A d d i t i o n a l m a t e r i a l. GBA 1848/0001/0079,

GBA 2002/0001/0014, GBA 2005/0004/0056, 0063, 0118 +

0119 (part + counterpart) IBUG 2005, 12006, NHMW 1878/6/6465 (part and counterpart).

D e s c r i p t i o n. Leaves shortly petiolate; lamina (narrow) elliptical to lanceolate, sometimes slightly ovate or obovate, l × w about (18) 24–50 × (7) 10–23 mm, ratio l/w about 1.9–2.9 (3.9), base cuneate to somewhat decurrent, apex bluntly acute, tip sometimes slightly emarginate; margin entire, thickened; midvein thick, straight, secondaries brochidodromous, very dense and numerous, at moderately acute angles, rather straight to sometimes slightly exmedially bent (concave), joining the margin; intersecondaries composite, numerous, with tertiaries forming narrow elongate meshes parallel to secondaries.

R e m a r k s. Differing from legumes in the characteristic dense venation and thickened margin. Specimen LMJ 76502 assigned to Buxus with doubts by Kovar-Eder et al. (2004: pl. 8, fig. 15) is excluded and assigned instead to? Dicotylophyllum sp. B .