IDNAME urn:idName:fossilplants.info:species:69FB979D-BBD4-43CD-8608-F8AB35A7CBED species
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Fallopia palaeodonica

Fallopia palaeodonica Doweld Phytotaxa, 308(1): 66. 2 Jun 2017
Name
Fallopia palaeodonica
Rank
Species
Generic Name
[Genus] Fallopia
Authors (Pub.)
Doweld A. B.  
Publication
New names in Fallopia, Persicarioipollis, Polygonum and...
Journal
Phytotaxa
Volume
308
Issue
1
Page number
66
Year
2017

Fossil Status
leaves

Stratigraphy
Serravallian
Location
Krynka river, right tributary of Mius river, Matveev-Kurgan district, Rostov region, Russian Federation
Paleoregion
Eurasia (Europe)
Data for Holotypus
Repository
Komarov Botanical Institute, Russian Academy of Sciences, St.-Petersburg, Russian Federation
Repository Number
958/982
Num
17: 7; text-fig. 23
Pub.
Sarmatskaja flora Krynki [1965/4]
Diagnosis
Leaves widely rounded, 8 × 7.5 cm; the base slightly sinuate and decurrent, with obtuse scallops; midvein 1 mm thick (at the leaf base) to 0.5 mm thick (in the leaf middle part), secondary and basal veins filiform; basal veins diverged at 45° from the midvein, then slightly curved, with a thin veinlet parallel to the margin (one leaf side) and thin infrabasal veinlet parallel to the basis margin (another leaf side). Basal veinlets as secondary veinlets ended in looplike anastomoses, which in secondary veinlets separated from the leaf margin by a series of large loops. Secondary veinlets (6–7 pairs at the base) somewhat connivent, diverged at 45–50° from the main vein, in the middle of leaf they apart and diverged at large angle; there are numerous intercalated veinlets between them. Tertiary veinlets, spiderweblike, oblique to secondary veinlets.
Nomenclatural synonyms

Species
Polygonum ukrainicum

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