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
non-stomatel areas narrow linear, up to 23 /jm wide, with undulating walls; two stomatal bands, adaxial one« are wider and include 8 widely spaced stomatal rows, and two abaxial ones, the latter are narrow, Include usually 2 to 3 rows of stomata; stomata completely bicyclic, longitudinally arranged, stomatal pit broadly elliptic, 12 to 17 x up to 20 /urn large, with thickened margin, surrounded by 2 polar and 3 to * lateral narrow subsidiary cells and 1 (to 2) rings Gf broader encircling cells; guard cells sunkened, roundish, 50 to 60 jum long. Remarks: The morphology of the leaves (truncate quadrangular needles) suffices to prove their affinity to Picea A. DIETR. The stomatal topography is characteristic of the sect. Picea. Material: 6 specimens., inventorized under Nos BK-5467, BK-5500, BK-5520 Abies sp. (PI. Ill, Figs. 15-20): Description.: Leaves are linear, about 1.5 mm wide and more than 10 mm long, bifacial, slightly emarginate at the apex, shortly petlolate with enlarged petiole base, hypostomatic; cells of non-stomatal areas linear, narrow, up to 18 xim wide, with finely undulating walls; two stomatal bands, on either side of the midrib, dense, consisting of up to 10 stomatal rows; stomata completely bicyclic, partly sharing encircling cells; stomatal pit rectangular-elongate, about 10x25/jm large, less distinct, chagrenata, surrounded by two polar and 3 to 4 lateral narrow and thickened subsidiary cells and 1 ring of large encircling cells; guard celjs deeply sunkened, roundish, about 50 Aim long. Remarks: Among the species of Abies MILL. with hypostomatic leaves and undulating anticlines the above described fragments match with e.g. A. ncrdmannians (STEV.) SPACH. and some Asiatic species. Material: 7 specimens., inventorized under NosBK-54B0 , BK-5506, BK-5535 MAGN0LIACEAE Liriodendron sp. (PI. II, Fig. 13): Description: Seeds-pair (from the same fruit locule) compressed together, drop-like in form, about 5.4 mm long and 3 mm wide, original warted surface structure is mostly covered by impressions of the quartz greins. Remark: Isolated seeds have been found in the Pontian of southern Moravia (KN08L0CH 1981a). The present seeds are similar to those of L. geminata KIRCHHEIMER which is well known from the Miocene and Pliocene of Eurasia (see Van der BURG 197B). Material: 2 specimens (seeds-pairs)., inventorized under Nos BK-5476, BK-5519 RANUNCULACEAE Ranunculus sp. (PI. Ill, Fig. 9): description: Fruit approx. 2.2 mm long and 1.8 mm wide, of asymmetric from, with ventrally apical (broken) style and rapidly narrowed base (fruit stalk only indicated); the surface very finely pitted. Remark: Morphologically very similar fruits may be found in Ranunculus, e.g. in R. polyanthemus L., R. repens L. and others. More precise determination is not possible without some further specimens. Material: 1 specimen., inventorized under No BK-5531 NYMPHAEACEAE Nymphaea szaferl KN0BL0CH (PI. IV, Fig. 7): Description: Seed flattened, ovate in outline, about 2.6 mm long and 1.7 mm wide, relatively thin-walled (testa about 0.045 mm thick); surface cells not much visible (under binocular), arranged In the more than 15 longitudinal rows or one side of flattened seed. Remarks: Present specimen can be identified as belonging to the species named above but the comprehensive studies and revision of the fossil seeds Nymphaea L. are necessary. The species based on the seeds from the Miocene of Southern Moravia (KN0BL0CH 1978) has also been recorded from the Pontian in this reálon (KN0BL0CH 1981а). ы Material: 1 seed. Inventorized under No BK-5540 53
