Back
Pseudodioon akyolii
Pseudodioon akyolii Erdei, Akgün, Lumaga Pl. Syst. Evol., 285(1): [5] 38. Mar 2010
- Name
- Pseudodioon akyolii
- Rank
- Species
- Original spelling
- akyoli
- Generic Name
- [Genus] Pseudodioon
- Authors (Pub.)
- Erdei B.
Akgün F.
Barone Lumaga M. R.
- Publication
- Pseudodioon akyoli gen. et sp. nov., an extinct member of Cycadales from the Turkish Miocene [2010/3]
- Journal
- Plant Systematics and Evolution
- Volume
- 285
- Issue
- 1
- Page number
- [5] 38
- Year
- 2010
- Fossil Status
- foliage
- Stratigraphy
- Miocene
- Strat. comment
- Soma Formation
- Location
- Soma, Manisa district, Turkey
- Paleoregion
- Eurasia (Anatolia)
Data for Holotypus
- Repository
- Hungarian Natural History Museum, Budapest, Hungary
- Repository Number
- BP.2000.1102.1 (Figs. 3a, b, 4a–c, 5a–d, 6a–f, 7a, b, 12d–f, 13b); cuticular preparations: BP.2000.1102.1/1, BP.2000.1102.1/2, BP.2000.1102.1/3, BP.2000.1102.1/transv.
Data for Paratypus
- Repository
- Department of Geological Engineering, Dokuz Eylül University, Izmir, Turkey
- Repository Number
- PB-51 (Figs. 3c, d); SB-7 (Fig. 8a) [Department of Geological Engineering, Dokuz Eylül University, Izmir, Turkey].
- Diagnosis
- Leaves simply pinnate. Rachis straight to slightly curved. Leaflets linear to narrow lanceolate, straight to slightly falcate, tapering towards the apex,
slightly contracted near the base. Base decurrent, apex acute. Margin entire. Leaflet insertion subopposite on rachis sides at 60–85 to rachis with broad base. Leaflets more crowded upwards and overlapping. Ten to fifteen veins enter the leaflets, often dichotomizing close to the base. No anastomoses.
Leaf hypostomatic. Stomata haplocheilic, arranged in bands. Guard cells sunken and overarched by high number of subsidiaries (8–11) forming centripetally a strongly cutinized coronal rim. Subsidiaries arranged radially. Ordinary epidermal cells uniformly thickened. Two-celled trichome bases in both stomatal and nonstomatal areas.
