Betula sp.

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

Betula sp.

Pl. 2, Figs 1–3

M a t e r i a l. GBA 2005/0004/0031, IBUG 1542, 1543,

NHMW 1878/6/2028a.

D e s c r i p t i o n. Leaves long-petiolate; lamina ovate to deltoidal, l × w about 25–59 × 19–36 mm, ratio l/w about 1.1–2.3, base widely rounded to almost truncate, apex acute to (?) acuminate; margin finely sharply serrate, teeth slightly unequal in size, triangular, narrow, shape variable, partly exmedially pointed; midvein straight; secondaries craspedodromous to semicraspedodromous, delicate, widely spaced but somewhat denser and at very wide angles near base, steeper towards apex, ending in tooth apices, near margin giving rise to exmedial veinlets which partly loop or end in tooth apices; tertiaries very thin, percurrent, partly sinuous, fourth order veins reticulate; higher order veins reticulate.

Differing from Alnus julianiformis see that taxon.

Differing from Betula vel Alnus sp. by ovate to deltoidal shape and widely rounded to truncate base.

Differing from Betulaceae gen. et sp. indet. by the deltoidal to triangular lamina, smaller teeth and higher length/width ratio.