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nominal species Unio requienii form crassidens Rossmässler, 1844

Unio requienii form crassidens Rossmässler, 1844 = Unio pictorum

Rossmässler, 1844. Icon. Land- und Süssw.-Moll. 2 (6): 30, pl. 57, figs. 757-760. [infra-subsp.]
(homonym of Unio crassidens Lamarck, 1819; intro'd as intra-sp. of Unio requienii Michaud, 1831)

= Unio pictorum

Taxonomic Opinions

+ Unio pictorum (Linnaeus, 1758) — He & Zhuang, 2013

+ Unio pictorum platyrhynchoideus [sic] Dupuy, 1849 — Haas, 1969

+ Unio pictorum platyrhynchoideus [sic] Dupuy, 1849 — Haas, 1940

= Unio requienii var. crassidens Rossmässler — Westerlund, 1890

= Unio (Lymnium) requienii var. B crassidens Rossm. — Moquin-Tandon, 1855