Persicaria omoloica

Name

Persicaria omoloica

Rank

Species

Generic Name

[Genus] Persicaria

Authors (Pub.)

Doweld A. B.  

Publication

New names in Fallopia, Persicarioipollis, Polygonum and Reynoutria (Polygonaceae), living and fossil [2017/6]

Journal

Phytotaxa

Volume

308

Issue

1

Page number

70

Year

2017

Fossil Status

fruits

Stratigraphy

Miocene

Location

Khapchan-khaja, left bank of Omoloj river, Ust'-Kutsk district, Irkutsk region, Russian Federation

Paleoregion

Eurasia (Siberia)

Data for Holotypus

Repository

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

Repository Number

19/1-K550/1

Num

92: 11

Pub.

Persicaria Hill. Vidy, opisannye po plodam [2005]

Diagnosis

Fruits 2.0–2.35 × 1.9–2.0 mm, ellipsoidal, sometimes apically widened, convex-planate or biconvex, initially bloated. Apex rounded, with a small remain of stylus; base shortly wedge-shaped, acicular, accrescent by perianth remains; side slightly tight. Fruits black, smooth; fruit surface foveolate in longitudinal series, forming slightly differentiated grooves. Pericarp 0.11–0.13 mm thick, 2-layered; exocarpium 1-layered, lignified, consisting of large, radially elongate cells, outer and inner cell walls thin, radial cell walls thick, porate, highly thickened in the upper 1/3 fruit part; mesocarpium thin, consisting of tangentially elongate and flattened cells.