Acer integrilobum C.O.WEBER sensu Walther 1972

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 : 84-85

Acer integrilobum C.O.WEBER sensu Walther 1972

2004 Acer integrilobum C.O.WEBER sensu Walther 1972 , forma A; Kovar-Eder et al., p. 78, pl. 10, figs 1–4 (non A. integrilobum , forma B).

D e s c r i p t i o n. Long-petiolate leaves; lamina trilobate, lamina l × w about 45–50 × 40–60 mm, base rounded (to subcordate), medial lobe broad, narrowing abruptly into an acuminate apex; lateral lobes almost of the same length or slightly shorter, acuminate to acute, at moderately wide to narrow angles to the medial lobe, sinus rounded and wide; margin entire or with one or a few small rounded teeth; venation palmate, with three primaries arising at the base and a few delicate eucamptodromous – craspedodromous secondaries.

Differing from Acer pseudomonspessulanum by a steeper divergence of the lateral lobes.

Differing from Dicotylophyllum sp. L (previously assigned to Acer integrilobum forma B sensu StröbitzerHermann in Kovar-Eder et al. 2004) in lower ratio of length of central lobe to basal lateral lobes. In Dicotylophyllum sp. L the central lobe is also distinctly broader than the basal lateral lobes giving the lamina a broadly triangular shape.

Differing from terminal leaflets of Toxicodendron melaenum by the larger size, broader shape and the basally palmate venation.

Acer pseudomonspessulanum UNGER emend.

Ströbitzer-Hermann 2002

Pl. 1, Fig. 1

2004 Acer pseudomonspessulanum UNGER emend. StröbitzerHermann 2002 ; Kovar-Eder et al., p. 77, pl. 10, figs 7–9.

M a t e r i a l. cf. GBA 2005/0004/112.

D e s c r i p t i o n. Long-petiolate leaves; lamina trilobate, l × w about 23–35 × 35–50 mm, ratio l/w about 0.7–1, base rounded, lobes narrow, nearly of the same length, narrowing to the acute apex, lateral lobes at wide angles to the median, sinus narrow rounded; margin entire or with single inconspicuous teeth; venation palmate, with three primaries and a few thin eucamptodromous – craspedodromous secondaries which are rarely preserved.

Differing from Acer integrilobum see that taxon.

Acer tricuspidatum A.BRAUN in Bronn 1838 Pl. 1, Figs 2–3

2004 Acer tricuspidatum A.BRAUN in Bronn 1838; Kovar-Eder et al., p. 77, pl. 10, figs 10–12.

A d d i t i o n a l m a t e r i a l. GBA 1848/0001/0075, cf. GBA 2005/0004/0122.

D e s c r i p t i o n. Long-petiolate leaves; lamina trilobate, l × w about 50 to at least 70 × 30–80 mm, base rounded, medial lobe broad, narrowing into an acute to acuminate apex, lateral lobes usually shorter and narrower, sinus between lobes narrow to medium rounded; margin irregularly double serrate; venation palmate, three primaries arising from the base, lateral ones at moderately acute angles from the central one; secondaries craspedodromous, rarely eucamptodromous, numerous, regularly spaced, distinct; tertiaries percurrent.

Ailanthus pythii (UNGER) KOVAR- EDER et KVAČEK Pl. 1, Figs 4–9

2004 Ailanthus pythii (UNGER) KOVAR- EDER et KVAČEK; KovarEder et al., p. 81, pl. 14, figs 2–5.

2004 “ Evonymus ” latoniae UNGER; Kovar-Eder et al., p. 85, pl. 12, fig. 4.

A d d i t i o n a l m a t e r i a l. GBA 1848/0001/0038, GBA 2005/0004/0044,? 0062,? 0099, 0124, IBUG 1587, 1588, 1598, 12010, NHMW 1852/1/1910, NHMW 1878/6/2837 (counterpart of 1878/6/2063; Kovar-Eder et al. 2004: pl. 12, fig. 4), 8481.

D e s c r i p t i o n. Long-petiolate compound leaves; leaflets petiolate, petiolules variable in length, often long (see Kovar-Eder et al. 2004: pl. 14, fig. 2); leaflets subopposite, lamina asymmetric, ovate/oblong, l × w about (40) 55–90 (> 160) × (14) 20–33 (42) mm, ratio l/w about 2.4– 3.6 (4), base asymmetric acute/cuneate/convex/rounded, apex acute; margin irregularly, simply, bluntly toothed to almost entire; midvein curved in the lower half of blade or (more rarely) straight; secondaries semicraspedodromous to eucamptodromous to brochidodromous, interspaced with one or more intersecondaries, secondaries and intersecondaries originating at wide angles, angles different on either side of midvein due to asymmetric shape, course rather straight except for marginal area where they are curved.

Differing from Dicotylophyllum sp. H by broader shape (lower length/width ratio), irregular, less dense dentation and larger size of teeth.

Differing from Dicotylophyllum sp. J by lower length/ width ratio, distinctly asymmetric base and less steep secondaries and intersecondaries.

Differing from Dicotylophyllum sp. FF by asymmetry, blunt teeth, and absence of proximally bent (concave) secondaries.

Differing from Dicotylophyllum sp. GG by blunt teeth and less dense venation.

Differing from Dicotylophyllum sp. JJ by dentate margin, rather straight secondaries, absence of basal secondaries closely paralleling margin.

Differing from leaflets of Engelhardia orsbergensis by mostly larger and broader blades (lower length/width ratio), stronger asymmetry of base and blunt and mostly larger teeth.

Differing from Fraxinus sp. by presence of petiolule, irregularly spaced, larger and blunt teeth, midvein bent in lower part of lamina, and more numerous intersecondaries.

Differing from lateral leaflets of Toxicodendron melaenum by usually larger size, more densely spaced secondaries interspaced with one or more intersecondaries.