Alnites schimanskii

Name

Alnites schimanskii

Rank

Species

Generic Name

[Genus] Alnites

Authors (Pub.)

Lavrenko O. D. Fotjanova L. I.  

Publication

Some Early Paleogene species from Western Kamchatka [1994/12]

Journal

NATO ASI Series

Volume

27

Page number

319

Year

1994

Fossil Status

leaves

Stratigraphy

Paleocene

Location

Snatol River, western Kamtchtka peninsula, Kamchatka Territory, Russian Federation

Paleoregion

Eurasia (Far East)

Data for Holotypus

Repository

Komarov Botanical Institute, Russian Academy of Sciences, St.-Petersburg, Russian Federation

Repository Number

colI. 960-7, No. 3419

Num

1: 2, 4

Pub.

Some Early Paleogene species from Western Kamchatka [1994/12]

Diagnosis

Leaves simple, varying in length from 6 to 7 cm and in breadth from 3 to 4 cm; obovate, ovate or elliptic, apex attenuate, base acute deccurent, petiole 1.5 cm long, margin serrate. Teeth originate at 1.0-1.5 cm above base, acute, small, 4-6 percm, serration type B3 or C3 sinuses angular. Venation craspedodromous, primary vein straight; secondary veins alternate, 16-17 per leaf, at the lower part of leaf curved, at upper part straight. The lowest two or three pairs of secondary veins situated closer to each other than upper pairs and attached to midrib at nearly right angle; angle of divergence at midpoint 45-55 degrees and at apex 35-45 degrees; secondaries provided with 1-3 branches, most secondaries terminating at the margin, but some of them at the lower part of leaves has two branches one of these terminating at the margin, but the other joining the superadjacent secondary. Tertiaries parallel or sub-parallel, straight, at right angles to the secondaries, 7-8 per cm, percurrent; between base and first pair of secondaries often joined together in a series of arches. Quaternary veins forming polygonal areoles.