Mya radiata Gmelin, 1791
Lister, 1685. Conch.: pl. 152, fig. 7.
Gmelin, 1791. Syst. Nat. 1(6): 3220, sp. 9, var. b. [in part]
(misidentified reference to Mya radiata Gmelin, 1791)

Lampsilis (sec. Eurynia) radiatus — Simpson (1900)
Lampsilis (Eurynia) radiata — Simpson (1914)

Unio cariosus Say, 1817
Lister, 1685. Conch.: pl. 152. fig. 7. [pre-linnaean]
Say, 1817. Nich. Encyc. 2: [12,] pl. 3, fig. 2.
Say, 1819. Nich. Encyc. 4: [17,] pl. 3, fig. 2.
Say, 1858. [in] Binney, Compl. Writings T. Say: 51.
Type(s): NEOTYPE MCZ_178839 (by R.I. Johnson, 1947: 148), Schuylkill River, near Philadelphia, Pennsylvania.

Lampsilis (s.s.) cariosus — Simpson (1900)
Lampsilis cariosa — Ortmann (1909), Ortmann (1909), Ortmann (1910), Ortmann (1912), F.C. Baker (1928), ... Hopper et al. (2023), Wu et al. (2023), Wu et al. (2024), FMCS (2025), Campbell & Lydeard (2026)
Lampsilis (s.s.) cariosa — Simpson (1914), Frierson (1927), Haas (1969), R.I. Johnson (1970)
— de Gregorio (1914)
Unio cariosus — Henderson (1935)

Lampsilis pallida Rafinesque, 1820
Rafinesque, 1819. Jour. Phys. Chim. Hist. Nat. 88: 426 [as ‘U. (Proptera) pallida’]. [nomen nudum]
Rafinesque, 1820. Ann. Gén. Sci. Phys. 5 (13): 299, footnote.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 29, 44.

— Simpson (1914), Vanatta (1915)
Lampsilis (s.s.) cariosa — Frierson (1927), Haas (1969), R.I. Johnson (1970)
Lampsilis cariosa — Burch (1975), Strayer & Jirka (1997)

Unio ovata Valenciennes, 1827
Valenciennes, 1827. Receuil Observ. Zool. 2(11-12): 226, pl. 50, figs. 1-1c.
(misidentified reference to Unio ovatus Say, 1817)

Lampsilis (s.s.) cariosus — Simpson (1900)
Lampsilis (s.s.) cariosa — Simpson (1914), Frierson (1927), R.I. Johnson (1970)

Unio oratus Conrad, 1849
Conrad, 1849. Ann. Mag. Nat. Hist. 4: 301.
Conrad, 1850. Jour. Acad. Nat. Sci. 1: 276, pl. 37, fig. 6.
Conrad, 1853. Proc. Acad. Nat. Sci. 6: 254.

Lampsilis (s.s.) cariosus — Simpson (1900)
Lampsilis (s.s.) cariosa — Simpson (1914), Frierson (1927), Haas (1969), R.I. Johnson (1970)
Lampsilis claibornensis — Clench & Turner (1956)
Lampsilis cariosa — Burch (1975)

Unio carriosoides Lea, 1868
Lea, 1868. Proc. Acad. Nat. Sci. 20: 163.

Unio cariosus — Henderson (1935)

Unio ovata Lamarck, 1819
‘Say’ Lamarck, 1819. Hist. Natur. Anim. sans Vert. 6: 75, sp. 23, var. b. [in part]
(misidentified reference to Unio ovatus Say, 1817)

Lampsilis (s.s.) cariosus — Simpson (1900)
Lampsilis (s.s.) cariosa — Simpson (1914)

Unio viridis Ferussac, 1835
‘Rafinesque’ Ferussac, 1835. Mag. Zool. 5(59-60): 27.
(misidentified reference to Unio (Elliptio) viridis Rafinesque, 1820)

Lampsilis (s.s.) cariosus — Simpson (1900)
Lampsilis (s.s.) cariosa — Simpson (1914)