Folia Historico-Naturalia Musei Matraensis - A Mátra Múzeum Természetrajzi Közleményei 17. (1992)
Bužek, Č.–László, J.: Contribution to the Upper Pannonian flora from Visonta, northern Hungary
Glyptostrobus europaeus (BRONGNIART) UNGER (Pl. Ill, Figs. 3-5. Pl. X, Figs. 5-12): Description: Twigs or fragments of twigs with helically arranged, appressed leaves, hardly 2 mm long; leaves have amphistometic , adaxial epidermis with two triangular stomatal bands including amphicyclic closely spaced stomata, mostly obliquelly orientated and abaxial groups of stomata of the same sort; stomata amphicyclic, stomatal pit chagrenate, broadly quadrangular-elliptic, about 12x30 jum large, surrounded by 4 (-6) narrow subsidiary cells, not differentiated, and a ring of encircling cells; cells of non-stomatal areas quadrangular, partly elongated, about 10-15/jm wide, with straight anticlinal walls; somewhat smaller cones and cone-scales, distal part of scales of about 5 mm long and 3 mm wide, with rounded and notched margin at the distal end and with radial furrows on the abaxial side; seeds has an incoplete wing or they are wingless, flat, up to 5.9 mm long and up to 1.2 mm wide, slightly bent, in some cases almost straight. Remarks: All the remains can be well identified with ccmmon Glyptostrobus europaeus. In the leaf anatomy the above described remains do not differ from the other Miocene records. According to seed morphology and anatomy, however, a few additional species of Glyptostrobus were established (00R0FEEV 1974). In the morphology the present seeds generally agree with those of G. pannonica D0R0FEEV. The relation between both species ha9 not been studied in details and G. pannonica may be only synonym of our species. Material: Very large number of twigs and their fragments, cones cone-scales and more than 100 seeds. The material is inventorized under Nos. BK-5452, BK-5453, BK5456, BK-545B, BK-5471-73, BK-5475, BK-5478, BK-54B2, BK-5494-96, BK-5533, BK-5546-5595. PINACEAE Pinus (Pinus) sp. (PI. Ill, Figs. 11, 12): Description: Fragments of brachyblasts with remains of needleleaves : leaves are triangular (?) in cross cection, surrounded by a short, transversely wrinkled sheath. Remark: Anatomical characters due to the bad preservation are not discernible. Material: 4 brachyblasts and a few fragments of leaves. The material is inventorized under Nos BK-5489, BK-5499, BK-5536. Pinus (Strobus) sp. (PI. Ill, Fig. 10): Description: Fragments of short brachyblasts without a sheat and pieces of separated triangular needle-leaves; leaves entire-margined, epistomatic; stomata monocyclic, longitudinally arranged in 2 to 3 closely disposed rows on either side of the keel. Remark: Highly fragmentary remains of both pines, which do not allow more specific determination. Material: 1 brachyblast and a few fragments of leaves. The material is inventorized under Nos BK-5474, BK-5488, BK-5532. Tsuga sp. (PI. Ill, Figs. 6-8): Description: Leeves shortly petiolate, 1 to 1.5 mm wide, 5 and more mm long, bifacial, hypostomatic , with one medial resin canal; upper epidermis consisting of narrow linear cells 8 to 15 /Urn wide with straight walls; cells of the lower epidermis outside stomatal areas of similar size and shape; two stomatal bands, on either side of the midrib, dense and wide, including up to 8 stomatal rows; stomata longitudinally arranged, incompletely bicyclic, partly sharing polar subsidiary and lateral encircling cells; stomatal pit quadrangular-elongate, 7x17 to 25 л""» only slightly thickened margin, surrounded by 2 polar and 2 to 3 lateral subsidiary cells; guard cells deeply sunkened, broadly elliptic, 30 to 40 /m long. Remark: Petiolate leaves and their stomatal topography refer to the alliance with the genus Tsuga CARR. sect. TSUGA. Material: 4 specimens., inventorized under Nos BK-5455, BK-5525. Picea sp. (PI. Ill, Figs. 21, 22): Description: Needle-leaves truncated, linear, in fragments only, 1 to 1.0 mm wide, quadrangular In cross section, bluntly pointed, emphlstoma tic; cells of 52
