species Platynaias subviridis (Conrad, 1835): synonymy

Unio subviridis Conrad, 1835

Conrad, 1835. New Fresh-Water Shells, Appendix: 4, pl. 9, fig. 1 [as ‘Unio viridis?’].

Lasmigona (Platynaias) subviridis — Ortmann & Walker (1922), Frierson (1927), R.I. Johnson (1970), Clarke (1985), Graf & Cummings (2007)
Lasmigona (Platynaias) subviridis subviridis — Haas (1969)
Lasmigona subviridis — Burch (1975), Heard (1975), R.I. Johnson (1980), Turgeon et al. (1988), Williams et al. (1993), ... Wu et al. (2021), Stewart et al. (2021), Whelan et al. (2023), Hopper et al. (2023), Perkins et al. (2025)
Lasmigona subviridus [sic] — Bogan (2002)
Platynaias subviridis — FMCS (2025), Campbell & Lydeard (2026)

Unio tappanianus Lea, 1838

‘Rafinesque’ Conrad, 1835. New Fresh-Water Shells, Appendix: 4, pl. 9, fig. 1 [as ‘Unio viridis?’].
Lea, 1836. Synopsis Fam. Naiades: 39. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 62, pl. 17, fig. 55.
Type(s): HOLOTYPE USNM_86133, Juniata River, near Hollidaysburg, Pennsylvania.

Symphynota (s.s.) viridis — Simpson (1900), Simpson (1914)
Lasmigona (Platynaias) subviridis — Ortmann & Walker (1922), Frierson (1927), R.I. Johnson (1970), Clarke (1985)
Lasmigona (Platynaias) subviridis subviridis — Haas (1969)
Lasmigona subviridis — Burch (1975), Strayer & Jirka (1997), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)

Unio neglectus Lea, 1843

Lea, 1843. [privately published sheet]: [1].
Lea, 1845. Trans. Amer. Phil. Soc. 9 [O. 4]: 280, pl. 42, fig. 10.
Type(s): HOLOTYPE USNM_85701, Northern Alabama.

Symphynota (s.s.) neglecta — Simpson (1900), Simpson (1914)
Lasmigona (Platynaias) subviridis-neglecta — Frierson (1927)
Lasmigona (Platynaias) subviridis neglecta — Haas (1969)
Lasmigona subviridis — Williams et al. (2008)

Unio hyalinus Lea, 1845

Lea, 1845. Proc. Amer. Phil. Soc. 4: 164.
Lea, 1848. Trans. Amer. Phil. Soc. 10 [O. 4]: 69, pl, 2, fig. 4.
Type(s): HOLOTYPE USNM_86131, Richmond, Va.

Symphynota (s.s.) viridis — Simpson (1900), Simpson (1914)
Lasmigona (Platynaias) subviridis — Frierson (1927), R.I. Johnson (1970), Clarke (1985)
Lasmigona (Platynaias) subviridis subviridis — Haas (1969)
Lasmigona subviridis — Burch (1975), Parmalee & Bogan (1998), Brim Box & Williams (2000), Williams et al. (2008), Watters et al. (2009)

Unio pygmaeus Lea, 1852

Lea, 1852. Proc. Amer. Phil. Soc. 5: 252 [as ‘pygmæus’]. [nomen nudum]
Lea, 1852. Trans. Amer. Phil. Soc. 10 [O. 5]: 262, pl. 15, fig. 14 [as ‘pygmæus’].
Type(s): HOLOTYPE USNM_85240, Abbeville District, SC.

Unio (sec. Elliptio) pygmæus — Simpson (1900)
Unio (sec. Elliptio) pygamæus [sic] — Simpson (1914)
Elliptio (s.s.) pygmaeus — Frierson (1927), Haas (1969)
Lasmigona (Platynaias) subviridis — R.I. Johnson (1970)
Lasmigona subviridis — Burch (1975)

Margaritana quadrata Lea, 1861

Lea, 1861. Proc. Acad. Nat. Sci. 13: 41.
Lea, 1862. Jour. Acad. Nat. Sci. 5 [O. 9]: 210, pl. 32, fig. 279.
Type(s): HOLOTYPE USNM_86264, E. Tenn.

Symphynota (s.s.) quadrata — Simpson (1900), Simpson (1914)
Lasmigona (Platynaias) quadrata — Frierson (1927), Haas (1969)
Lasmigona (Platynaias) subviridis — Clarke (1985)
Lasmigona subviridis — Parmalee & Bogan (1998), Brim Box & Williams (2000), Williams et al. (2008)

Unio pertenuis Lea, 1863

Lea, 1863. Proc. Acad. Nat. Sci. 15: 193.
Lea, 1866. Jour. Acad. Nat. Sci. 6 [O. 11]: 8 [12], pl. 2, fig. 4.
Type(s): HOLOTYPE USNM_86139, Neuse R., Raleigh, N. Carolina.

Symphynota (s.s.) viridis — Simpson (1900), Simpson (1914)
Lasmigona (Platynaias) subviridis — Frierson (1927), R.I. Johnson (1970), Clarke (1985)
Lasmigona (Platynaias) subviridis subviridis — Haas (1969)
Lasmigona subviridis — Burch (1975), Parmalee & Bogan (1998), Brim Box & Williams (2000), Williams et al. (2008), Watters et al. (2009)

Unio viridis Conrad, 1835

(misidentified reference to Unio (Elliptio) viridis Rafinesque, 1820)
‘Rafinesque’ Conrad, 1835. New Fresh-Water Shells, Appendix: 4, pl. 9, fig. 1.
‘Rafinesque’ Conrad, 1836. Monogr. Fam. Unionidae 1(4): 35, pl. 17, fig. 1.

Symphynota (s.s.) viridis — Simpson (1900), Simpson (1914)
Symphynota viridis — Ortmann (1909), Ortmann (1909), Ortmann (1910), Ortmann (1912)
Lasmigona (Platynaias) subviridis — Ortmann & Walker (1922), R.I. Johnson (1970), Clarke (1985)
Lasmigona subviridis — Strayer & Jirka (1997), Parmalee & Bogan (1998), Watters et al. (2009)

Unio tappianus Catlow & Reeve, 1845

(error for Unio tappanianus Lea, 1838)
‘Lea’ Catlow & Reeve, 1845. Conch. Nomen.: 64.

Symphynota (s.s.) viridis — Simpson (1900), Simpson (1914)
Lasmigona (Platynaias) subviridis subviridis — Haas (1969)
Lasmigona subviridis — Parmalee & Bogan (1998), Watters et al. (2009)

Unio pygmoeus Conrad, 1853

(error for Unio pygmaeus Lea, 1852)
‘Lea’ Conrad, 1853. Proc. Acad. Nat. Sci. 6: 256 [as ‘pygmœus’].

Unio pygamaeus Simpson, 1914

(error for Unio pygmaeus Lea, 1852)
‘Lea’ Simpson, 1914. Descr. Cat. Naiades: 649.

Elliptio (s.s.) pygmaeus — Frierson (1927)

Unio pertenius Clarke, 1985

(error for Unio pertenuis Lea, 1863)
‘Lea’ Clarke, 1985. Smithson. Contrib. Zool. (399): l51.

Lasmigona subviridus Bogan, 2002

(error for Unio subviridis Conrad, 1835)
‘Conrad’ Bogan, 2002. Workbook Key Freshw. Biv. NC: 11.