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Unio amygdalum Lea, 1843

Lea, 1843. [privately published sheet]: [1].
Lea, 1845. Trans. Amer. Phil. Soc. 9 [O. 4]: 275 [33], pl. 39, fig. 1.
Type(s): HOLOTYPE USNM_86127, L. George, Florida.

Lampsilis (sec. Eurynia) amygdalum — Simpson (1900)
Lampsilis (Eurynia) amygdalum — Simpson (1914)
Lampsilis (Villosa) amygdalum — Frierson (1927), Haas (1969)
Villosa vibex amygdalum — Clench & Turner (1956)
Villosa amygdala — R.I. Johnson (1972), Burch (1975), Turgeon et al. (1988), Williams et al. (1993), Turgeon et al. (1998), ... Cummings & Graf (2010), IUCN (2011), ITIS (2012), Haag (2012), Watters (2018)
Villosa amygdalum — Williams et al. (2011), Williams et al. (2014), Williams et al. (2017), Graf & Cummings (2021), FMCS (2021), Hopper et al. (2023), FMCS (2025)

Unio trossulus Lea, 1843

Lea, 1843. [privately published sheet]: [1] [as ‘trosculus’].
Lea, 1845. Trans. Amer. Phil. Soc. 9 [O. 4]: 278 [36], pl. 40, fig. 6.
(correct name for Unio trosculus Lea, 1843)
Type(s): HOLOTYPE (MONOTYPY) USNM_84705, L. Monroe, Fla.

Lampsilis (sec. Eurynia) trossulus — Simpson (1900)
Lampsilis (Eurynia) trossulus — Simpson (1914)
Lampsilis (Villosa) amygdalum — Frierson (1927), Haas (1969)
Villosa vibex amygdalum — Clench & Turner (1956)
Villosa amygdala — R.I. Johnson (1972), Burch (1975)
Villosa amygdalum — Williams et al. (2011), Williams et al. (2014)

Unio papyraceus Gould, 1845

Gould, 1845. Proc. Boston Soc. Nat. Hist. 2: 53.
Type(s): LECTOTYPE USNM_86125 (by R.I. Johnson, 1964: 122), Everglades, Florida.

Lampsilis (sec. Eurynia) papyraceus — Simpson (1900)
Lampsilis (Eurynia) papyracea — Simpson (1914)
Lampsilis (Villosa) amygdalum — Frierson (1927), Haas (1969)
Villosa vibex amygdalum — Clench & Turner (1956)
Villosa amygdala — R.I. Johnson (1972), Burch (1975), Watters (2018)
Villosa amygdalum — Williams et al. (2011), Williams et al. (2014)

Unio lepidus Gould, 1856

Gould, 1856. Proc. Boston Soc. Nat. Hist. 6: 15.
Type(s): LECTOTYPE MCZ_169223 (by R.I. Johnson, 1964: 92), Lake Monroe, Florida.

Lampsilis (sec. Eurynia) amygdalum — Simpson (1900)
Lampsilis (Eurynia) amygdalum — Simpson (1914)
Lampsilis (Villosa) amygdalum — Frierson (1927), Haas (1969)
Villosa vibex amygdalum — Clench & Turner (1956)
Villosa amygdala — R.I. Johnson (1972), Burch (1975), Watters (2018)
Villosa amygdalum — Williams et al. (2011), Williams et al. (2014)

Unio vesicularis Lea, 1872

Lea, 1872. Proc. Acad. Nat. Sci. 24: 156.
Lea, 1874. Jour. Acad. Nat. Sci. 8 [O. 13]: 37 [41], pl. 12, fig. 34.
Type(s): FIGURED SYNTYPE USNM_85292, Lake Okeechobee, Florida.

Lampsilis (sec. Eurynia) vesicularis — Simpson (1900)
Unio (s.s.) parvus — Call (1900)
Lampsilis (Eurynia) vesicularis — Simpson (1914)
Lampsilis (Villosa) vesicularis — Frierson (1927), Haas (1969)
Villosa vibex amygdalum — Clench & Turner (1956)
Villosa amygdala — R.I. Johnson (1972), Burch (1975), Watters (2018)
Villosa amygdalum — Williams et al. (2011), Williams et al. (2014)

Unio singleyanus Marsh, 1891

Marsh, 1891. Joliet Weekly News: ??.
Marsh, 1891. Nautilus 5(3): 29.
Simpson, 1892. Proc. U.S. Nat. Mus. 15(911): 426, pl. 68, figs. 4-5.
Type(s): HOLOTYPE UMMZ_249348, Sumpter Co., Fla.

Lampsilis (sec. Eurynia) singleyanus — Simpson (1900)
Lampsilis (Eurynia) singleyana — Simpson (1914)
Lampsilis (Villosa) vesicularis — Frierson (1927), Haas (1969)
Villosa vibex amygdalum — Clench & Turner (1956)
Carunculina parva — R.I. Johnson (1972), Burch (1975)
Villosa amygdala — R.I. Johnson (1972), Burch (1975), Watters (2018)
Villosa amygdalum — Williams et al. (2011), Williams et al. (2014)

Lampsilis (Villosa) wrightiana Frierson, 1927

Frierson, 1927. Check List N. Amer. Naiades: 81, sp. 351.
Frierson, 1928. Nautilus 41(4): 139, pl. 2, fig. 3.
Type(s): SYNTYPE UMMZ_91179, Volusia Co., Fla.

Lampsilis (Villosa) wrightiana — Frierson (1927), Haas (1969)
Villosa vibex amygdalum — Clench & Turner (1956)
Villosa villosa — R.I. Johnson (1972), Burch (1975), Brim Box & Williams (2000), Williams et al. (2008)
Villosa amygdalum — Williams et al. (2011), Williams et al. (2014)

Unio minor of Authors, unknown year

Call of Authors.
(misidentified reference to Unio minor Lea, 1843)

Lampsilis (Villosa) vesicularis — Frierson (1927)

Unio trosculus Lea, 1843

Lea, 1843. [privately published sheet]: [1].
(incorrect original spelling of Unio trossulus Lea, 1843)

Villosa vibex amygdalum — Clench & Turner (1956)
Villosa amygdala — R.I. Johnson (1972), Burch (1975), Watters (2018)
Villosa amygdalum — Williams et al. (2014)

Unio papraceus R.I. Johnson, 1972

‘Gould’ R.I. Johnson, 1972. Bull. Fla. State Mus. 16(4): 240.
(error for Unio papyraceus Gould, 1845)