Szekessy Vilmos (szerk.): A Magyar Természettudományi Múzeum évkönyve 54. (Budapest 1962)
Rásky, K.: Tertiary plant remains from Hungary (Upper Eocene and Middle Oligocene)
ranges in America, being frequent in the Bahamas and the Antilles, from Mexico through Central America to Bolivia, Southern Brasil, and Paraguay. They are tropical trees, but some species also ascend to the subtropical zone of the higher mountains (up to 2,000 m.a.s.l.). Trimeriaephyllum hungaricum n. gen., n. sp. (Plate VI, Figs. 1—2). Derivation oi generic name: Construed from the genus Trimer ia. Derivation oi specific name: after the country of its discovery. Holotype: the specimen shown on Plate VI, Fig. 1. In the Paleobotanical Collection of the Botanical Department, Hungarian Natural History Museum, Budapest. Collect, nr. 62. 69. 1. Paratype: leaf shown on Plate VI, Fig. 2. Collect, nr. 62. 70. 1. Type locality: Budapest— Óbuda, the former Nagybátony—Üjlak brick-yard Type stratum: marl formation, Upper Eocene. Materials: 2 specimens, holotype and paratype. Diagnosis gen. et sp. : Oval round leaves. Base of lamina expanded or w r eakly rounded. Length of leaves 4,5—5,0 cm, width between 3,5—5,5 cm. Margins crudely dentate, teeth blunt or rounded. Lamina 3—5 nerved from base, petiole 2,0 and 5,0 mm. Impression of minute glands visible between divergent veins on base of leai. Four of five (? 6) further veins, parallel with each other, excurrent on both sides from two extreme laterals, extending towards margin of lamina. These veins locally forking, and bent in light arches, terminating in teeth. Midrib emitting yet 2—3 alternating secondary veins, anteriorly of median line of lamina, directed upwards and, forking in front of margin, terminating in teeth. Midrib and secondary veins connected by parallel, more or less broken tertiaries, discernible only locally. Reticulation between tertiaries hardly visible on impressions. Leaves probably slightly coriaceous. Remarks: The fossil leaf remains resemble, at first glance, the fragments of Viburnum leaves. However, the Viburnum leaf finds known from the European floras cannot be compared with the leaf remains from Óbuda. The leaves of Viburnum vitifolium SAP. & MARION (1881, p. 213, Fig. 36) from the Paleocene of Gelinden, or those of Viburnum atlanticum ETTH. (ETTINGSHAUSEN, 1866, p. 209, Taf. 36, Fig. 2) from the fossil flora of Bilin (Schichow) are of quite another type. Also the Viburnum species described by Massalongo from the fossil flora of Senigallia (1895, p. 280-282, Tav. 10-11, Tav, 26-27, Tav. 36) differ from the Óbuda remains. HOLLICK'S Viburnum leaves, published from the Tertiary flora of Alaska (HOLLICK, 1936, p. 166, Pt. 105, Pt. 106 and Pt. 107), deviate as much from the Óbuda leaves as HEER'S Viburnum species from Greenland (HEER, 1883, p. 114, Pt. 89, and Pt. 94) or the Sachalin island (HEER, 1878, p. 43, Pt. 11). The leaf remains of Viburnum richardsoni, described by KNOWLTON from the Paleocene Denver flora (KNOWLTON, 1930, Pt. 53, and Pt. 54), must also be excluded from the comparison. Comparison with recent species: The shape, venation, and dentation of the fossil leaf remains can be conveniently associated with the leaves of the recent Trimeri a alnifolia PLANCH. (= Trimeria rotundifolia [HÖCHST.] GILG). The recent form of Trimeria alnifolia PLANCH is a shrub or a small tree,
