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Viburnum protofurcatum
Viburnum protofurcatum Tanai J. Fac. Sci. Hokkaido Univ., Ser. 4, Geol., 11(2): 378. 20 Mar 1961
- Name
- Viburnum protofurcatum
- Rank
- Species
- Generic Name
- [Genus] Viburnum
- Authors (Pub.)
- Tanai T.
- Publication
- Neogene floral change in Japan [1961/3]
- Journal
- Journal of the Faculty of Science of the Hokkaido University
- Volume
- 11
- Issue
- 2
- Page number
- 378
- Year
- 1961
- Parent Taxon
- [Genus] Viburnum
- Fossil Status
- leaves
- Stratigraphy
- Miocene
- Location
- Nukabira, Kami-shihoro-cho, Kato-gun, Hokkaido, Japan
- Paleoregion
- Eurasia (Japanese Archipelago)
Data for Holotypus
- Repository
- National Museum of Nature and Science, Palaeobotany Collection, Tokyo, Japan
- Repository Number
- UHR-15278
- Diagnosis
- Leaves comparatively Iarge in size, somewhat inequilateral, orbicular or ovoid in general outline, 8 to 11 em long and 8.5 to 9 cm wide; base asymmetrie, deeply cordate; apex rounded or obtusely pointed; midrib stout, prominent, nearly straight; secondary nerves stout, 6 to 8 subalternate pairs, diverging from the midrib at angles of about 30 degrees on the middle of the blade, less on the upper, more angles on the lower; a basal pair of secondaries making nearly right angle with the midrib, and sending off several tertiaries; generally secondaries in the Iower half of blade sending off several tertiary branches on lower side of them ; tertiaries among inter-secondary spaces thin but distinct, irregularly percurrent; margin duplicately serrate, with nearly equal-sized and acute teeth; texture thin, membranaceous; petiole stout, over 1 cm long.
