Alnus sp.

Erdei, Bolgárka, Hably, Lilla, Héja, Gábor & Fodor, László, 2022, The Late Oligocene Macroflora Of Zsámbék, Central Hungary, Fossil Imprint 78 (1), pp. 298-309 : 301

cf. Alnus sp.

Pl. 3, Fig. 2–4

M a t e r i a l. HNHM-PBO 2021.181.1. HNHM-PBO 2021.182.1., HNHMn-PBO 2021.186.2–2021.188.1., HNHM-PBO 2021.190.1., HNHM-PBO 2021.194.2., HNHM-PBO 2021.202.2.–2021.205.2.

D e s c r i p t i o n. Leaves are simple, petiolate. Lamina is broadly ovate in shape. Its length is up to 8 cm, width is up to 5 cm. Apex is acute. Base is acute to obtuse or slightly cordate. Margin is toothed with rarely spaced small teeth. Apical side of teeth is shorter than the basal side. Venation appears to be semicraspedodromous. Midvein is strong. Secondary veins emerge from the midvein at acute angles (~70°) and seem to form loops near the margin.

D i s c u s s i o n. Although the leaves are poorly preserved, their gross morphology resembles leaves of Alnus described from Egerian floras of Hungary, e.g., Alnus oligocaenica ANDR. (Eger-Wind brickyard; Andreánszky 1966). The species appeared in several Egerian localities in Hungary. The genus was an important element of the Környe flora (Pl. 3, Fig. 5), which is also supported by the presence of fossils of its female inflorescence ( Hably et al. 2015). It was accompanied by other swamp elements, thus it presumably occupied wetland habitats.