MUSSELpdb
Taxonomy
Species & Genus Richness of
freshwater mussels
by Taxonomy
Species & Genus Richness of
freshwater bivalves
by Family
Geography
Species Richness & Endemism of
freshwater mussels
by Geography
Data last updated
Mon 2 March 2026
Bivalvia | ... | Unionidae | Unioninae | Anodontini | Alasmidontina | Alasmidonta undulata
nominal species Unio undulata Say, 1817
Unio undulata Say, 1817 = Alasmidonta undulata
Say, 1817. Nich. Encyc. 2: [13,] pl. 3, fig. 3.
Say, 1819. Nich. Encyc. 4: [19,] pl. 3, fig. 3.
Say, 1858. [in] Binney, Compl. Writings T. Say: 53.
Taxonomic Opinions
= Alasmidonta (s.s.) undulata (Say, 1817) — Campbell & Lydeard, 2026: 293.
= Alasmidonta undulata — Perkins et al., 2025: Table S1.
= Alasmidonta undulata — Perkins et al., 2025: Table S1.
= Alasmidonta undulata (Say, 1817) — FMCS, 2025: [1].
= Alasmidonta undulata (Say, 1817) — Whelan et al., 2023: 3, Tables 1, S1.
= Alasmidonta undulata (Say, 1817) — Hopper et al., 2023.
= Alasmidonta undulata (Say, 1817) — Graf & Cummings, 2021: 15.
= Alasmidonta undulata (Say, 1817) — FMCS, 2021: [1].
= Alasmidonta undulata — Gasparini et al., 2020: Table S1.
= Alasmidonta undulata — Chase et al., 2018: Table S2.
= Alasmidonta undulata — Inoue et al., 2018: Table S2.
= Alasmidonta undulata (Say, 1817) — Williams et al., 2017: 36.
= Alasmidonta undulata — Jones, 2015: 318.
= Alasmidonta undulata — Inoue et al., 2014: 540.
= Alasmidonta (s.s.) undulata (Say, 1817) — Williams et al., 2014: 131.
= Alasmidonta undulata (Say, 1817) — ITIS, 2012: [web].
= Alasmidonta undulata — Haag, 2012: 73.
= Alasmidonta undulata (Say, 1817) — IUCN, 2011: [web].
= Alasmidonta undulata — Breton et al., 2011: Table S1.
= Alasmidonta undulata Say, 1817 — Bogan, 2010: [2].
= Alasmidonta undulata — Cummings & Graf, 2010: 375.
= Alasmidonta (s.s.) undulata (Say, 1817) — Graf & Cummings, 2007: 305.
= Alasmidonta undulata (Say, 1817) — Kneeland & Rhymer, 2007: 280.
= Alasmidonta undulata (Say, 1817) — Bogan, 2002: 11.
= Alasmidonta undulata (Say, 1817) — Turgeon et al., 1998: 32.
= Alasmidonta undulata (Say) — Strayer & Jirka, 1997: 45, pl. 12, figs. 4-6; fig. 12L.
= Alasmidonta undulata (Say) — Williams et al., 1993: 10.
= Alasmidonta undulata (Say, 1817) — Turgeon et al., 1988: 28.
= Alasmidonta undulata — Kat & Davis, 1984: 180.
= Alasmidonta undulata — Kat, 1983: 299, fig. 2F.
= Alasmidonta (s.s.) undulata (Say, 1817) — Clarke, 1981: 38, figs. 12-14.
= Alasmidonta undulata (Say) — Davis & Fuller, 1981: 219.
= Alasmidonta undulata (Say, 1817) — R.I. Johnson, 1980: 99, List 3, sp. D; Table 3.
= Alasmidonta (s.s.) undulata (Say, 1816) — Burch, 1975: 14.
= Alasmidonta (s.s.) undulata (Say, 1817) — R.I. Johnson, 1970: 349, pl. 13, figs. 3-4.
= Alasmidonta (s.s.) undulata (Say, 1817) — Haas, 1969: 391.
= Alasmidonta (s.s.) undulata (Say, 1817) — Haas, 1969: N447, fig. D41:6.
= Alasmidonta undulata (Say, 1817) — Modell, 1942: 180.
= Alasmodonta undulata (Say) — Thiele, 1934: 830, [1264].
= Alasmidonta (s.s.) undulata (Say, 1817) — Frierson, 1927: 18, sp. 20.
= Alasmidonta (s.s.) undulata (Say, 1817) — Simpson, 1914: 494.
= Alasmidonta undulata (Say, 1817) — Ortmann, 1912: 296.
= Alasmidonta undulata (Say) — Ortmann, 1910: 118.
= Alasmidonta undulata Say — Ortmann, 1909: 99.
= Alasmidonta undulata (Say) — Ortmann, 1909: 207.
= Alasmidonta (s.s.) undulata (Say, 1816) — Simpson, 1900: 667.
= Alasmodonta undulata Say — Pilsbry & Rhoads, 1896: 505.
= Margaritana undulata Say — B.H. Wright, 1888: [6].
= Margaron (Margaritana) undulata (Say) — Lea, 1870: 68.
= Margaritana (Strophitus) undulata (Lea) [sic] — Perkins, 1869: 155.
= Unio undulatus Say, 1817 — Sowerby, 1868: pl. 76, sp. 399.
= Margaritana undulata Say — Küster, 1862: 298, pl. 99, fig. 4.
= Baphia (Alasmodonta) undulata “Lea” — Adams & Adams, 1857: 499.
= Unio (Alasmodonta Strophitus) undulatus Say — Mørch, 1853: 48.
= Alasmodonta [sic] undulata Say — Agassiz, 1852: 46.
= Margaron (Margaritana) undulata (Say) — Lea, 1852: 42.
+ Strophitus sculptilis (Say) — Stimpson, 1851: 15.
= Alasmodonta undulata Say — Linsley, 1845: 277.
= Unio undulata Say — Hanley, 1843: 211.
= Alasmodon undulata Say — De Kay, 1843: 198, pl. 15, fig. 227.
= Alasmodon undulata (Say, 1817) — Swainson, 1840: 288, 289, fig. 61; 262, 382.
= Margarita (Margaritana) undulata Say — Lea, 1838: 27.
= Margarita (Margaritana) undulata (Say, 1817) — Lea, 1836: 44.
= Alasmodonta undulata Say, Barn. — Ferussac, 1835: 26.
= Alasmadonta [sic] undulata — Jay, 1835: 18.
= Alasmodonta undulata (Say, 1817) — Ravenel, 1834: 7.
= Alasmidonta undulata Say — Menke, 1830: 106.
= Alasmodonta [sic] undulata Say — Lea, 1829: 424.
= Unio undulata Say, 1817 — Wood, 1828: 3, pl. 1, sp. 5; 57.
= Alasmodonta undulata — Barnes, 1823: 279.
= Alasmidonta undulata Say — Rafinesque, 1820: 318.
= Alasmidonta undulata (Say, 1817) — Say, 1819: sp. 2, pl. 3, fig. 3.
= Alasmidonta undulata (Say, 1817) — Say, 1818: 459.
= Monodonta undulata (Say, 1817) — Say, 1817: sp. 9, pl. 3, fig. 3.
