Szekessy Vilmos (szerk.): A Magyar Természettudományi Múzeum évkönyve 54. (Budapest 1962)
Rásky, K.: Tertiary plant remains from Hungary (Upper Eocene and Middle Oligocene)
having leaves of a rather varying shape (Pt. VI, Figs. 3 — 4). On one of the fossil Trimeriaephyllum leaf (Pt. VI, Fig. 1), there extends, immediately along one of the secondary veins originating from the midrib, also another conspicuous vein. This feature recurs on the recent leaves of the species (ETTINGSHAUSEN, 1861, Taf. 73, Fig. 10). Trimeria alnifolia PLANCH, ranges now in the Natal (South Africa). Trimeria tropica BURKILL ascends to 1600 — 1800 m the mountains in the Kilimanjaro territory (Usambara, Massai Plateau) in tropical East Africa. Seven veins extend from the base into the lamina on the leaves of Trimeria bakeri GILG, a tree attaining 15 m, growing at a height of 2300—3000 m in the Massai Plateau in tropical East Africa. Description: a calyx remain with 3 sepals. Wings disunited basally, apices terminating in flat tips. Length of wings 1,6 cm each, greatest width between 0,5—0,7 cm. Midrib of wings thicker than two secondary veins, originating also from base. Midrib and secondaries connected by smaller veins and reticulation. Materials: a single calyx found in the Kiscell clay deposits of the Middle Oligocène. Remarks: The calyx impression from Óbuda can be well identified with the remains described by CHANDLER (1926, p. 136, Pt. 9, Figs. 1—3 and text-fig. 13) as Abelia trialata from the Bembridge flora (England) of the Middle Oligocène. CHANDLER also remarks that the Abelia trialata remains resemble the fruit remains of Heterocalyx ungeri. The remains of Heterocalyx ungeri SAP. was also found in the Upper Eocene marl of Óbuda. The difference between this fruit and the Abelia trialata remains lie in the venation of the wings. The venation of Abelia trialata is subdivided into the midrib and two lateral veins, while the venation of the wings of Heterocalyx is composed of fine, small veins, extending almost parallelly with each other. The venation of the wings of CHANDLER'S Abelia quadrialata and*Abelia quinquealata is similar to that of the wings of Heterocalyx, but differs in the venation of the wings of Abelia trialata. This is the cause why we, too, had been unable to associate the fruit of Heterocalyx ungeri SAP. with the remains of Abelia trialata. No stalk is visible on our Heterocalyx find from Óbuda. Comparison with recent species: CHANDLER compared the Abelia remains of the Bembridge flora with the recent species Abelia corymbosa REGEL & SCHMALHAUSEN, Abelia insularis NAKAI, Abelia zanderi GRAEBNER, and Abelia umbellata GRAEBNER & BUCHWALD . The list of species previously published by the author from the Upper Eocene marl formation of Budadest —'Óbuda is as follows below: CAPRIFOLIACEAE Abelia trialata REID & CHANDLER (Plate I. Fig. 3). Summary Hooleya hermis (UNG.) REID & CHANDLER Cinnamomophyllum scheuchzeri (Heer) KR. & WLD. Mimosites haeringiana ETTH. Telraclinis brongniarti ENDL. Engelhardtia brongniarti SAP. Betula sp. seed fruit seed fruit leaf leaf
