Rhus ezoensis

Name

Rhus ezoensis

Rank

Species

Original spelling

ezoense

Generic Name

[Genus] Rhus

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

349

Year

1961

Parent Taxon

[Genus] Rhus

Fossil Status

leaves

Stratigraphy

Miocene

Location

Kamishanabuchi, along Minami-zawa, Engaru-cho, Monbetsugun, Hokkaido, Japan

Paleoregion

Eurasia (Japanese Archipelago)

Data for Holotypus

Repository

National Museum of Nature and Science, Palaeobotany Collection, Tokyo, Japan

Repository Number

HUMP-25677

Diagnosis

Leaflets oblong-ovate in general out}ine, more than 4,2 cm long and 1.7 cm wide, near!y equilateral and rounded at base, acuminate at apex; midrib stout below, distantly slender, somewhat flexous, extending to the tip; 9 to 11 pairs of secondaries irregularly spaced, diverging from the midrib at variable angles ranged from 45 nearly 90 degrees, arched up, near the margin abruptly arising up, then entering into the teeth, craspedodrome; slender subsecondaries among above-noted secondaries diverging from the midrib, curving upwards, reaching to the notches among the teeth; tertiaries thin, irregularly percurrent; areolation fine ; margin strongly dentate except at base and apex, with acute and deltoid teeth; petiole short, 2mm in Iength; texture firm.