Cedrelospermum ulmifolium (UNGER)

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 : 87

Cedrelospermum ulmifolium (UNGER) KOVAR- EDER et KVAČEK

Pl. 2, Figs 16–18

2004 Cedrelospermum ulmifolium (UNGER) KOVAR- EDER et KVAČEK; Kovar-Eder et al., p. 68, pl. 8, figs 1–5.

A d d i t i o n a l m a t e r i a l. GBA 2005/0004/0096,

0097, IBUG 835, 2806a, NHMW 1878/6/7617.

D e s c r i p t i o n. Leaves petiolate; lamina narrow slender ovate, elliptic to oblong, l × w about 23–66 × 5–18 mm, ratio l/w about 2.8–5.6, base usually asymmetrical, uneven, the narrower side straight, the wider side convex, apex long acute to acuminate; margin simple, regularly bluntly serrate, proximal and distal sides of teeth often convex, sinus angular to rounded; midvein straight to slightly bent or S-shaped; secondaries craspedodromous, ending in tooth apices, in number largely corresponding to the number of teeth, sometimes forked, course curved, descending at moderate angles; tertiaries and higher order veins reticulate.

Differing from Ulmus plurinervia UNGER by more slender, narrow ovate and smaller lamina, less numerous teeth and less dense venation.

Differing from Zelkova zelkovifolia (UNGER) BŮŽEK et KOTL. by more slender, usually smaller and stronger asymmetrical lamina, long acute apex, and higher number of teeth and secondaries.