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Davidia arsanovii
Davidia arsanovii Cheleb. Trudy Geol. Inst. Ross. Akad. Nauk, (540): 258. 24-31 Dec 2005
- Name
- Davidia arsanovii
- Rank
- Species
- Generic Name
- [Genus] Davidia
- Authors (Pub.)
- Chelebaeva A. I.
- Publication
- Opisanie iskopaemykh rastenij [2005/12]
- Journal
- Trudy Geologicheskogo Instituta Rossijskoj Akademii Nauk
- Issue
- 540
- Page number
- 258
- Year
- 2005
- Fossil Status
- leaves
- Stratigraphy
- Eocene
- Strat. comment
- Irgirnin Formation
- Location
- Podkagernaya Bay, western Kamtschatka peninsula, Kamchatka Territory, Russian Federation
- Paleoregion
- Eurasia (Far East)
Data for Holotypus
- Repository
- Vernadsky State Geological Museum, Russian Academy of Sciences, Moscow, Russian Federation
- Repository Number
- 8101-139
- Diagnosis
- Leaf nearly 12 cm long, orbiculate, apex acuminate, base cordate, slightly asymmetrical, margin simply dentate, teeth subequal triangular with rounded flanks and acute tips; petiole more or less long, often absent. Venation pinnate craspedodromous; secondary veins 5-7 pairs, straight or little curved; the angle of diverging from the midvein are 45-50° near the base, gradually increase upward to 30°, basal secondaries raising to half of the lamina, asymmetrical, give off 4-5 subparallel external branches, the lowest of them branching too. Some other secondaries dichotomizing or branching. Tertiary percurrent, sometimes branched, make scalariform anastomoses. Higher-order veins obscure.
