Pungiphyllum FRANKENHÄUSER et WILDE

Kvaček, Zlatko & Teodoridis, Vasilis, 2011, The Late Eocene Flora Of Kučlín Near Bílina In North Bohemia Revisited, Acta Musei Nationalis Pragae Series B 67 (3 - 4), pp. 83-144 : 105

Pungiphyllum FRANKENHÄUSER et WILDE

This genus was originally established for spiny lobed leaves from the middle Eocene site Eckfeld identified as Pungiphyllum waltheri FRANKENHÄUSER et WILDE and some larger forms of Pungiphyllum cruciatum (A. BRAUN) FRANKENHÄUSER et WILDE , usually referred to “ Quercus ” cruciata A. BR. and spread in the European Tertiary. The generitype as well as all known epidermal structures of “ Quercus ” cruciata differ in the type of stomata from the Fagaceae ( Kvaček and Walther 1981, Frankenhäuser and Wilde 1995). Individual populations of these enigmatic plants vary in the leaf shape and size during the Tertiary. Small and often shallow lobed forms from the Middle Eocene of Eckfeld, which were described as an independent species Pungiphyllum waltheri FRANKENHÄUSER et WILDE (1995) , differ from the population of Kučlín, formerly compared with the Middle Eocene material ( Kvaček 2002a), but it is separated as suggested below.