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Dicotylophyllum uhudler
Dicotylophyllum uhudler Kovar-Eder in Kovar-Eder, Hably Acta Palaeobot., 46(2): 179. 15 Dec 2006
- Name
- Dicotylophyllum uhudler
- Rank
- Species
- Generic Name
- [Genus] Dicotylophyllum
- Authors (Name)
- Kovar-Eder J. B.
- Authors (Pub.)
- Kovar-Eder J. B.
Hably L.
- Publication
- The flora of Mataschen – a unique plant assemblage from the late Miocene of eastern Styria (Austria) [2006/12]
- Journal
- Acta Palaeobotanica
- Volume
- 46
- Issue
- 2
- Page number
- 179
- Year
- 2006
- Fossil Status
- leaves
- Stratigraphy
- Tortonian
- Strat. comment
- Pannonian
- Location
- Mataschen clay pit, 5 km SW of Fehring, district Feldbach, Styria, Austria
- Paleoregion
- Eurasia (Europe)
Data for Holotypus
- Repository
- Naturhistorisches Museum Wien, Geologisch-Paläontologische Abteilung, Vienna, Austria
- Repository Number
- 2000B0015/3
- Diagnosis
- Often tiny fragments, lamina thin and skin-like (not splitting in tiny fragments), thin, brownish, shape asymmetric, base mostly incomplete, acute to slightly obtuse, apex acute/acuminate, leaf margin entire, oblong, slightly ovate, obovate; largest fragment 85 mm (completed about 92 mm) long; venation brochidodromous, in no. 110 ? basally acrodromous, veins generally slender, secondaries irregularly spaced (from basal towards apical adjacent ones 13/5/8 mm), course slightly irregular, forming loops with adjacent secondaries in the marginal third of the lamina, tertiaries forming distinct, irregular meshes; fourth-order veins forming a quadro-, penta-, hexagonal network, fi fthorder veins forming polygonal areoles without free-ending veinlets. Adaxial cuticle (Pl. 11, fi g. 8): thick, less frequently and less well preserved than the abaxial cuticle, smooth; size of non-modifi ed epidermal cells 15–29 μm (22–24 μm), anticlines straight, curved to undulate, unequally 2–3 μm thick, with nodules; ? trichome or ? gland bases rare in intercostal areas and upon veins, two-celled, very strongly cutinized, oval to roundish, outer diameter 21–29 μm (24–27 μm) × 16–20 μm (19 μm); trichomes not preserved Abaxial cuticle (Pl. 3, fi g. 11, Pl. 11, fi gs 5, 6): thick, well preserved, strongly wrinkled; stomatal complexes slightly elevated, neither non-modifi ed nor subsidiary cells distinguishable; stomata 19–31 μm (23–25 μm) long, 17–26 μm (19–22 μm) wide, outer stomatal ledges of the guard cells distinctly thickened, smooth, stomatal aperture (broad) oval, 8–17 μm (11–14 μm) long, polar slender I-pieces developed; anticlines of the non-modifi ed epidermal cells usually not visible due to dense, randomly oriented wrinkles, only occasionally, ? undulate anticlines faintly discernible, more slender than on the adaxial cuticle; oval to roundish bases of probably ? glands / glanduliferous trichomes, mostly two-celled, sometimes three-celled, cells unequal in size; occasionally at least two stories of base cells observable; exceptionally preserved a club-shaped two-celled terminal head; these bases more abundant than on the adaxial cuticle, outer diameter of the bases 21–28 μm (24–25 μm) × 17–24 μm (19–21 μm), wrinkles around them radially oriented.
