Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 88. (Budapest 1996)

Bajzáth, J.: Plant macrofossils from Hungarian Pleistocene II. Angiospermatophyta in Győrújfalu, West Hungary

the interglacial deposits but abundant in the sediments of the Late-Glacial period in Central and West Europe. Potamogeton gramineus LINNAEUS, 1753 (Fig. 5) Description: The small endocarps are 1.75-2 mm long and 1.2-1.5 mm wide, more or less rounded. There is a very short beak on the top of the endocarp (Fig. 5). Discussion: This species is very remarkable in the interglacial (i. e. Cromer) deposits in Europe but it occurs in the glacial and Late-Glacial phases too. Najadaceae Najas tenuissima (A. BR.) MAGNUS, 1870 Description: The single broken seed is 1.75 mm in length and 0.5 mm in width. The shape is long obovate. The cells of the wall are long, more or less quadrangulate and thick. Discussion: This species is the modern form of the Najas lanceolata C. et E. M. REID. 1915 which existed in Tertiary in West Europe and in Baskiria (DOROFEEV 1966). Cyperaceae Carex aquatilis WAHLENBERG. 1803 Description: The achenes arc rounded-obovate 1.8 mm in length and 1.5 mm in width. Toward the base they are tapering. The beak is short. Discussion: It does not exist in modern Hungarian flora. Carex gracilis CURTIS, 1783 Description: The achenes are fine and small with short beak. The shape is elliptic or rounded; 1.5 mm in length and 0.8 mm in width. Carex caespitosa LINNAEUS, 1753 Description: The achenes are rather rounded 1.5-2 mm x 1.5-1.75 mm in size. The base of the seeds is thick. D i s c u s s i o n : It is known in Pliocene and Pleistocene localities in Europe. It is a relic species in the modern Hungarian flora. Carex elata ALLIONI, 1785 (Figs 17-18) Description: The relatively large achenes are 1.8-2.5 mm in length and 1.5-1.75 mm in width with short beak. The shape is obovate. The base of the seeds is thick and broad. The remains of the utriculus often stay on the base (Figs 17-1 8). D i s c u s s i o n : It is a very characteristic species in a similar shape-range. This species is common in the Pleistocene in Europe. Carex elongata LINNAEUS, 1753 Description: The characteristic long ovate achenes are 2.4-2.6 mm in length and 11.2 mm in width. There is a relatively long beak on the top of the seeds. Discussion: This Carex species indicates the existence of the alder forest. Carex nigra (LINNAEUS) REICHARD, 1778 Description: The achenes are 1.8-2.5 mm 1.6-1.75 mm in size. The shape is elliptic. Discussion: It is very similar to C. elata. It was found in Pliocene and Pleistocene in Europe.