Unio (Elliptio) viridis Rafinesque, 1820
Rafinesque, 1820. Ann. Gén. Sci. Phys. 5 (13): 293.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 39.
Type(s): NEOTYPE USNM_86261A (by Clarke, 1981: 28), Ohio.

— Simpson (1900), Simpson (1914), Burch (1975)
Symphynota viridis — Vanatta (1915)
Lasmigona (Platynaias) subviridis — Ortmann & Walker (1922)
Lasmigona (Platynaias) viridis — Frierson (1927), Haas (1969)
Lasmigona (Platynaias) viridis viridis — Haas (1969)
Alasmidonta viridis — Morrison (1969), Oesch (1984), Turgeon et al. (1988), Cummings & Mayer (1992), Williams et al. (1993), ... Graf & Cummings (2021), FMCS (2021), Whelan et al. (2023), Hopper et al. (2023), Perkins et al. (2025)
Alasmidonta calceolus — R.I. Johnson (1980)
Alasmidonta (Pressodonta) viridis — Clarke (1981), Graf & Cummings (2007)
Pressodonta viridis — FMCS (2025)
Sulcularia viridis — Gordon (2025)

Unio (Elliptio) viridis var. fuscata Rafinesque, 1820
Rafinesque, 1820. Ann. Gén. Sci. Phys. 5 (13): 294.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 39.
(intro'd as intra-sp. of Unio (Elliptio) viridis Rafinesque, 1820)
Type(s): TYPE ANSP_20219, Riv. Kentucky.

Symphynota viridis — Vanatta (1915)
— Vanatta (1915)
Lasmigona (Platynaias) viridis viridis — Haas (1969)
Sulcularia viridis — Gordon (2025)

Unio (Elliptio) viridis var. radiata Rafinesque, 1820
Rafinesque, 1820. Ann. Gén. Sci. Phys. 5 (13): 294.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 39.
(intro'd as intra-sp. of Unio (Elliptio) viridis Rafinesque, 1820)

— Vanatta (1915)
Lasmigona (Platynaias) viridis viridis — Haas (1969)
Sulcularia viridis — Gordon (2025)

Unio calceolus Lea, 1828
Lea, 1828. Trans. Amer. Phil. Soc. 3 [O. 1]: 265, pl. 3, fig. 1.
(renamed Calceola angulata Swainson, 1840)
Type(s): LECTOTYPE USNM_86261 (by Clarke, 1981: 17), Ohio.

Alasmidonta (Pressodonta) calceola — Simpson (1900), Frierson (1927), Haas (1969), R.I. Johnson (1970)
Unio (Margaritana) deltoidea — Call (1900)
Alasmidonta (Pressodonta) calceolus — Simpson (1914), F.C. Baker (1928), Haas (1969)
Unio calceolus — de Gregorio (1914)
Alasmidonta calceolus — Utterback (1915), Gordon et al. (1979), Mathiak (1979), R.I. Johnson (1980), Mackie et al. (1980), ITIS (2012)
Calceola calceolus — Walker (1918)
Alasmodonta (sec. Pressodonta) calceola — Thiele (1934)
Alasmidonta viridis — Morrison (1969), Oesch (1984), Strayer & Jirka (1997), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)
Alasmidonta (s.s.) calceola — Burch (1975)
Alasmidonta (Pressodonta) viridis — Clarke (1981), Graf & Cummings (2007)
Sulcularia viridis — Gordon (2025)

Lasmigona viridis Rafinesque, 1831
Rafinesque, 1831. Continuation: 5.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 80.
(homonym of Unio (Elliptio) viridis Rafinesque, 1820)

Alasmidonta viridis — Simpson (1900), Simpson (1914), Watters et al. (2009)
Lasmigona (s.s.) costata-viridis — Frierson (1927)
Lasmigona (Platynaias) compressa — F.C. Baker (1928)
Lasmigona (s.s.) costata — Haas (1969)
Lasmigona compressa — Clarke (1973)
— Burch (1975)
Sulcularia viridis — Gordon (2025)

Lasmigona viridis var. chloris Rafinesque, 1831
Rafinesque, 1831. Continuation: 5.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 80.
(intro'd as intra-sp. of Lasmigona viridis Rafinesque, 1831)

Alasmidonta viridis — Watters et al. (2009)
Sulcularia viridis — Gordon (2025)

Lasmigona viridis var. fuscata Rafinesque, 1831
Rafinesque, 1831. Continuation: 5.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 80.
(homonym of Unio (Elliptio) viridis var. fuscata Rafinesque, 1820; intro'd as intra-sp. of Lasmigona viridis Rafinesque, 1831)

Alasmidonta viridis — Watters et al. (2009)
Sulcularia viridis — Gordon (2025)

Lasmigona viridis var. radiata Rafinesque, 1831
Rafinesque, 1831. Continuation: 5.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 80.
(homonym of Unio (Elliptio) viridis var. radiata Rafinesque, 1820; intro'd as intra-sp. of Lasmigona viridis Rafinesque, 1831)

Alasmidonta viridis — Watters et al. (2009)
Sulcularia viridis — Gordon (2025)

Sulcularia badia Rafinesque, 1831
Rafinesque, 1831. Continuation: 5.
Rafinesque, 1864. [in] Binney & Tryon, reprint: 81.
Type(s): NEOTYPE UMMZ_306757, Dix River ~100 m downstream from the confluence with Logan Creek, Logantown, Lincoln County, Kentucky.

Alasmidonta badium — Simpson (1900), Simpson (1914)
Lasmigona (Sulcularia) badia — Ortmann (1918), Haas (1969), Haas (1969)
Lasmigona (Alasminota) holstonia — Ortmann & Walker (1922), Ortmann (1923), Clarke (1985)
— Ortmann (1925), Burch (1975)
Alasmidonta (Sulcularia) badia — Frierson (1927)
Lasmigona (sec. Sulcularia) holstonia — Thiele (1934)
Lasmigona badia — Morrison (1969)
Lasmigona holstonia — R.I. Johnson (1980), Parmalee & Bogan (1998), Williams et al. (2008)
Sulcularia viridis — Gordon (2025)

Alasmidonta marginata Say, 1834
Say, 1834. Amer. Conch. 6: ??.
(misidentified reference to Alasmidonta marginata Say, 1818)

Alasmidonta (Rugifera) marginata — Simpson (1900)
Alasmidonta (Pressodonta) calceola — Frierson (1927)

Margaritana deltoidea Lea, 1838
Lea, 1836. Synopsis Fam. Naiades: 44. [nomen nudum]
Lea, 1838. Trans. Amer. Phil. Soc. 6 [O. 2]: 43, pl. 13, fig. 38.
Type(s): LECTOTYPE USNM_86215 (by Clarke, 1981: 17), Scioto R., Ohio.

Alasmidonta (Pressodonta) calceola — Simpson (1900), Frierson (1927)
Unio (Margaritana) deltoidea — Call (1900)
Alasmidonta (Pressodonta) calceolus — Simpson (1914), F.C. Baker (1928), Haas (1969)
Alasmidonta calceolus — Utterback (1915)
Alasmidonta (Pressodonta) viridis — Clarke (1981)
Alasmidonta viridis — Oesch (1984), Strayer & Jirka (1997), Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)
Sulcularia viridis — Gordon (2025)

Calceola angulata Swainson, 1840
Swainson, 1840. Treat. Malacol.: 382.
(new name for Unio calceolus Lea, 1828)

— Simpson (1914)
Calceola calceolus — Walker (1918)
Alasmidonta (Pressodonta) viridis — Clarke (1981)
Alasmidonta viridis — Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)
Sulcularia viridis — Gordon (2025)

Margaritana minor Lea, 1845
Lea, 1845. Proc. Amer. Phil. Soc. 4: 165.
Lea, 1848. Trans. Amer. Phil. Soc. 10 [O. 4]: 82 [56], pl. 8, fig. 26.
Type(s): LECTOTYPE USNM_86224 (by Clarke, 1981: 18), N.C.

Alasmidonta (Pressodonta) minor — Simpson (1900), Simpson (1914), Ortmann (1914), Ortmann (1918), Ortmann (1924), Ortmann (1925)
Alasmidonta minor — Ortmann (1912), ITIS (2012)
Alasmidonta (Pressodonta) calceola-minor — Frierson (1927)
Alasmidonta (Pressodonta) calceolus — Haas (1969)
Alasmidonta calceolus — R.I. Johnson (1980)
Alasmidonta (Pressodonta) viridis — Clarke (1981)
Alasmidonta viridis — Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)
Sulcularia viridis — Gordon (2025)

Unio diversus Conrad, 1856
Conrad, 1856. Amer. J. Sci. 21: 172.

Alasmidonta (Pressodonta) diversa — Simpson (1900), Simpson (1914)
— Ortmann (1925)
Alasmidonta (Sulcularia) diversa — Frierson (1927)
Lasmigona (Sulcularia) diversa — Haas (1969)
Alasmidonta viridis — Parmalee & Bogan (1998), Williams et al. (2008)
Sulcularia viridis — Gordon (2025)

Alasmidonta (Pressodonta) calceolus danielsi F.C. Baker, 1928
F.C. Baker, 1928. Bull. Wisconsin Geol. Nat. Hist. Survey 70(2): 187, pl. 69, fig. 2; pl. 72, figs. 7-11.
(intro'd as intra-sp. of Unio calceolus Lea, 1828)
Type(s): HOLOTYPE (ORIG. DESIG.) INHS_82276, Moots Creek, White County, Indiana.

Alasmidonta (Pressodonta) calceolus danielsi — F.C. Baker (1928)
Alasmidonta calceolus — R.I. Johnson (1980)
Alasmidonta (Pressodonta) viridis — Clarke (1981)
Alasmidonta viridis — Williams et al. (2008), Watters et al. (2009)
Sulcularia viridis — Gordon (2025)

Alasmidonta (Pressodonta) calceolus magnalacustris F.C. Baker, 1928
F.C. Baker, 1928. Bull. Wisconsin Geol. Nat. Hist. Survey 70(2): 188, pl. 69, fig. 3; 72, figs. 12-16.
(intro'd as intra-sp. of Unio calceolus Lea, 1828)
Type(s): HOLOTYPE (ORIG. DESIG.) UMMZ_209215, Sturgeon Bay, Wisc.

Alasmidonta (Pressodonta) calceolus magnalacustris — F.C. Baker (1928)
Alasmidonta calceolus — R.I. Johnson (1980)
Alasmidonta (Pressodonta) viridis — Clarke (1981)
Alasmidonta viridis — Williams et al. (2008), Watters et al. (2009)
Sulcularia viridis — Gordon (2025)

Unio triqueter Short & Eaton, 1831
Short & Eaton, 1831. Transylvania J. Med. Assoc. Sci. 1831: ??.
(misidentified reference to Truncilla triqueter Rafinesque, 1820)

Alasmodonta truncata Conrad, 1834
‘Say’ Conrad, 1834. New Fresh-Water Shells: 73.
(intro'd as syn of Alasmodonta radiata Conrad, 1834)

Alasmidonta (Pressodonta) calceola — Simpson (1900), Frierson (1927)
Alasmidonta (Pressodonta) calceolus — Simpson (1914), Haas (1969)
Alasmidonta (Pressodonta) viridis — Clarke (1981)
Alasmidonta viridis — Parmalee & Bogan (1998), Williams et al. (2008), Watters et al. (2009)
Sulcularia viridis — Gordon (2025)

Unio calciolus Swainson, 1840
Swainson, 1840. Treat. Malacol.: 289, footnote.
(error for Unio calceolus Lea, 1828)