No taxon left behind? - a critical taxonomic checklist of Carpinus and Ostrya (Coryloideae, Betulaceae) Author Holstein, Norbert Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Nordrhein-Westfalen, Germany. & Corresponding author: holstein @ uni-bonn. de Author Weigend, Maximilian Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Nordrhein-Westfalen, Germany. & Email: mweigend @ uni-bonn. de text European Journal of Taxonomy 2017 2017-12-07 375 1 52 journal article 21949 10.5852/ejt.2017.375 c072dbcc-028b-4fa2-a564-8601e0435854 2118-9773 3838542 2a. Carpinus caroliniana Walter subsp. caroliniana Note: It was accepted as subspecies distinct from C. caroliniana subsp. virginiana (Marshall) Furlow in the Flora of North America ( Furlow 1997 ). C. americana Michx., Flora Boreali-Americana 2: 201, pl. 7 ( Michaux 1803 ). – Original citation: “A Canadam ad Floridam.” – Original material: Ameriques septentrionales, A. Michaux s.n. (P06810890!); ibid., s. coll., s.n. (P06810902!, P06810903!). – Note: Carpinus americana is regarded as synonymous to C. caroliniana s. lat. in Flora of North America ( Furlow 1997 ).