Koelreuteria kvacekii P.-R.Chen, C.Del Rio et Su in Chen, Del Rio, Huang, Liu, Zhao, Spicer, Li, Wang, Zhou & Su

Plant Fossil Names Registry Number: PFN002926

Act LSID: urn:lsid:plantfossilnames.org:act:2926

Authors: P.-R. Chen, C. Del Rio & T. Su

Rank: species

Reference: Chen, P. R., Del Rio, C., Huang, J., Liu, J., Zhao, J. G., Spicer, R. A., Li, S. F., Wang, T. X., Zhou, Z. K. & Su, T. (2022): Fossil Capsular Valves of Koelreuteria (Sapindaceae) from the Eocene of Central Tibetan Plateau and Their Biogeographic Implications. – International Journal of Plant Sciences 183(4): 307–319.

Page of description: 309

Illustrations or figures: fig. 2


Original diagnosis/description

Individual capsule valves nearly symmetrical with an entire margin, oblate in outline (fig. 2A–2D). Apex lobed (fig. 2E), and base cordate (fig. 2F). Septum extends approximately half of the valve length from the base. Lateral veins craspedodromous, sparse, and sinuous, diverging at 607–1207,
and together with intervening veins, forming a relaxed reticulation with transversely elongated areoles (fig. 2G). Seeds subglobose, one or two per locule, attached to the upper part of the septum (fig. 2H).


The specific epithet “kvacekii” is used in memory of Professor Zlatko Kvaček (1937–2020), a distinguished and inspiring paleobotanist who worked mainly on Cenozoic floras of Europe.


Paleogene, Eocene, Lutetian
Lower Niubao Formation, early middle Eocene (Lutetian; ca. 47 Ma).


Jianglang, Bangor Basin, central Tibet, China (lat. 31.637N, long. 90.037E; 4850 m asl).

Plant fossil remain

macro- and meso-fossils-embryophytes except wood


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