Szekessy Vilmos (szerk.): A Magyar Természettudományi Múzeum évkönyve 54. (Budapest 1962)

Rásky, K.: Tertiary plant remains from Hungary (Upper Eocene and Middle Oligocene)

Comparison with recent species: The fragment found in the Upper Eocene marl formation in Óbuda is well associable with those of the recent Pterospermum species, especially wdth Pterospermum sagittatum HAM. of Calcutta. It is also similar to the leaves of the recent Pterospermum niveum Vm. (Mindanao). ACTINIDIACEAE Actinidiophyllum ovatum MACGINITIE (Text-fig. 2) 1888. Actinidiophyllum, NATHORST, A. G. - Pal. Abh. 4. p. 228. 1867. Alnus sporadum SAP. (non UNGER) — Ann. Sei. Nat. Bot. (5), Tome 7—8, p. 60, PL 4, Fig. 3. 1937. Actinidia ovata MACGINITIE - Carn. Inst. Wash. Publ. 534, p. 147, Pt. 13, Figs. 2-3. Description: Leaves elliptical in outline (ovate, subacuminate to sub-rotund). Measurable length 8,0 cm, measurable width 6,0 cm. Margins and base of leaf injured. Apex rounded or acute, base rounded or slightly cordate. Margin minutely glandulo-dentate, with shallow, outward-pointing teeth. Midrib strong but attenuate near tip. Midrib emitting 7 or 8 pairs of secondary veins. Lower pair of secondaries directed marginally, uppers somewhat towards apex. Fig. 2. Actinidiophyllum ovatum MAC- Fig. 3. Actinidia miquelii KING, recent, GINITIE, Upper Eocene, Budapest— for comparison, Sumatra, X 2/3 Alter Óbuda, Collect nr. 62.72.1., xl. BRÜHL, P. & G. KING 1896Secondaries subopposite or alternate. Lateral veins weakly arching, often branching dichotomously already in vicinity of midrib. One of ultimate branches entering marginal teeth, other branch connecting in camptodrome type vein in front. Lower pair of secondaries bearing 5 or more branches on lower side, these camptodrome, emitting one small branch each into teeth. Tertiary venation percurrent, connecting secondaries vertically, broken or forking. A very