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Actinovena
Genus Actinovena Tanai Bull. Natl. Sci. Mus. Tokyo, C, Geol. Paleontol., 15(4): 134. 22 Dec 1989
- Name
- Actinovena
- Rank
- Genus
- Authors (Pub.)
- Tanai T.
- Publication
- The revision of the so-called "Alangium" leaves from the Paleogene of Hokkaido, Japan [1989/12]
- Journal
- Bulletin of the National Science Museum Tokyo
- Volume
- 15
- Issue
- 4
- Page number
- 134
- Year
- 1989
- Parent Taxon
- [Family] Tiliaceae
- Fossil Status
- leaves
- Type
- Actinovena ishikariensis
- Diagnosis
- Leaves nearly equilateral, narrow ovate, entire in margin , slightly
acuminate at apex, broadly rounded at base; venation palmate with 3 primary veins ;
lateral primaries extending more than half the distance to the apex; secondaries nearly
straight, looping angularly just within the margin; abmedial tertiaries forming a
series of submarginal loops; intercostal tertiaries distinct, convex percurrent, somewhat
irregularly spaced , sometimes forking ; intercostal quaternaries thick, forming
small polygonal meshes with thick quinternary veins; marginal quaternaries irregularly
looping outside of tertiary loops, sometimes joining marginal thickening ; areoles
small ; veinlets lacking or single.
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