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Eretmophyllum odintsovae
Eretmophyllum odintsovae An.O.Frolov, Mashchuk Jursk. Fl. Rastit. Irkutsk. Ugol'n. Bass. 211. 2018
- Name
- Eretmophyllum odintsovae
- Rank
- Species
- Generic Name
- [Genus] Eretmophyllum
- Authors (Pub.)
- Frolov A. O.
Mashchuk I. M.
- Publication
- Jurskaya flora i rastitel'nost' Irkutskogo ugol'nogo basseyna [2018]
- Authors (Book)
- Frolov A. O.
Mashchuk I. M.
- Book
- Jurskaya flora i rastitel'nost' Irkutskogo ugol'nogo basseyna
- Page number
- 211
- Year
- 2018
- Fossil Status
- leaves (bracts)
- Stratigraphy
- Aalenian
- Strat. comment
- Tal'tsinskaja subsuite
- Location
- left bank of the Irkutsk water reservoir, crop 8, Irkutsk Basin, Irkutsk region, Russian Federation
- Paleoregion
- Eurasia (Siberia)
Data for Holotypus
- Repository
- Institute of the Earth's Crust, Siberian Branch, Russian Academy of Sciences, Irkutsk, Russian Federation
- Repository Number
- WR-8-12/14 / ВДХР-8-12/14
- Diagnosis
- Leaves are linear-lanceolate, petiolate with gradually tapered wedge-shaped
base. Leaves length exceeds 9–80 mm with width being 13 mm. Leaves are amphistomatic. Upper epidermis is differentiated into stomatal and without stomata bands. Periclinal walls of cells are straight, beadily thickened. Trichomes are absent on anticlinal walls of all cells of stomatal and without stomata bands. Stomata of upper epidermis form two-three interrupted rows in bands. Bands without stomata on lower epidermis are composed of 8–12 rows of narrow forms of elongated cells. Stomatal bands on lower epidermis consist of median zone with stomata and two bordering zones without stomata. All cells of stomatal bands lack trichomes. Stomata form two-three
interrupted rows in median zone. Subsidiary stomatal cells do not differ in degree of cutinization from ordinary cells of epidermis. Their anticlinal walls bear cutinizated papillae.
