B. Papp szerk.: Studia Botanica Hungarica 30-31. 1999-2000 (Budapest, 2000)

Erdei, Boglárka; Lesiak, Maria: A study of dispersed cuticles, fossil seeds and cones from Sarmatian (Upper Miocene) deposits of Sopron-Piusz puszta (W Hungary)

Laurophyllum sp. (Figs 10-11) Material: BP 99.504.1. Description: A cuticle fragment of medium thickness. Length and width of the isodiametric cells are 28-50 urn and 17-32 urn, respectively. Their arrangement is pentagonal, sometimes hexagonal. Anticlinal cell walls are straight and heavily thickened. The randomly arranged stomata are 25-31 urn long and 13-15 urn wide, respectively. Stomatal pore is mostly of 10 um. Type of stomata seems to be paracytic. Loranthaceae Viscophyllum sp. (Figs 14-16) Material: BP 99.498.1 ; BP 99.505.1. Description (BP 99.498.1): A relatively thick cuticle with isodiametric cells. The arrangement of the 22.5-43.8 urn long and 15-31.3 urn wide cells is pentagonal. The anticlinal walls are straight and heavily thickened. There is only one stoma preserved of considerably great size, its length and width are 50 urn and 25 um, respectively. Its type seems to be paracytic. Description (BP 99.505.1 ): Relatively thick cuticle with isodiametric cells the length and width of which show greater values than the previous one, 50-87.5 um and 31.3-50 um. Their arrangement is pentagonal or hexagonal. Anticlinal cell walls are straight and uniformly thickened. The randomly orientated stomata (guard cells) are 37.5-50 urn long and 18-19 urn wide, respectively. Length and width mesaured together with the subsidiary cells are 56-62.5 urn and 35-44 urn, respectively. Length of stomatal pore ranges between 20-27.5 um. Type of stomata is paracytic, however, in several cases it appears to be peri- or desmocytic. Discussion: Based on the structure of the epidermis and the dimensions of stomata it is assigned surely to Loranthaceae (Viscum). Several Viscum remains are known from the literature. First of all Viscum morlotii (Ung.) Knobloch et Kvacek (KNOBLOCH and KVACEK 1976, p. 67, Taf. 33, Figs 4-11) is to be mentioned from the Bohemian Miocene, and from the floras of Wiesa, Turow, Düren, Kreuzau.