Rhus ochotensis

Name

Rhus ochotensis

Rank

Species

Generic Name

[Genus] Rhus

Authors (Pub.)

Chelebaeva A. I.  

Publication

Opisanie iskopaemykh rastenij [2005/12]

Journal

Trudy Geologicheskogo Instituta Rossijskoj Akademii Nauk

Issue

540

Page number

254

Year

2005

Fossil Status

leaves

Stratigraphy

Eocene

Strat. comment

Irgirnin Formation

Location

Irgirnivajam Creek, 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

8206-5

Num

pl. 28, fig. 1; pl. 25, fig. 1

Pub.

Opisanie iskopaemykh rastenij [2005/12]

Diagnosis

Leaflets elliptical or ovate in shape, to 19 cm long, and 6,3 cm wide, apex acute or attenuate, base rounded or asymmetric - obtuse in one side of lamina, cuneate in another side, margin almost entire or irregularly serrate, teeth very small, obscure, more or less visible in the upper third of the blade; venation pinnate, camptodromous, partly semicraspedodromous; midvein thick, secondaries thinner, in 15-25 pairs, predominantly subopposite, straight, divergate from the midvein at a nearly right angle in the basal part of the lamina, and 50-70° above it, near the margin abruptly arising up and forming several loops; more closely spaced in the upper part of the lamina and near the base. Intercostal veins present sometimes, parallel to secondaries. Tertiary veins perpendicular to secondaries, forking and anastomosing.