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 Publication Sowerby (1868): taxonomic opinionspublication summary
 Complete CitationSowerby, G.B. 1868. Genus Unio. Conchologica Iconica 16: pls. 1, 61-96. Available electronically. Taxonomic OpinionsUnio affinis Lea, 1852 = Lampsilis straminea Unio alabamensis (Lea, 1861) = Pseudodontoideus connasaugaensis Unio ambiguus Philippi, 1847 = Velesunio ambiguus Unio amoenus Lea, 1840 = Cambarunio iris Unio angustatus Lea, 1831 = Elliptio angustata Unio aratus Lea = Micronaias arata Unio arctior Lea, 1838 = Eurynia dilatata Unio asperatus Lea, 1861 = Pustulosa kieneriana Unio astieranus [sic] Dupuy, 1850 = Potomida littoralis+ Unio cuneatus Rossmässler, 1854
 Unio atrocostatus Lea, 1848 = Amblema plicata Unio aureus Lea, 1859 = Pustulosa pustulosa Unio biangulatus Lea, 1842 = Ortmanniana pectorosa Unio bilineatus (Lea, 1831) = Lamellidens marginalis Unio blandianus Lea, 1856 = Quadrula quadrula Unio bonellii Férussac in Rossmässl. = Microcondylaea bonellii+ Unio depressa C. Pfeiffer, 1825
 + Alasmodonta compressa Menke, 1830
 Unio bonneaudi Eydoux, 1838 = Indonaia shurtleffiana+ Unio shurtleffianus Lea, 1856
 Unio bonneaudi Eydoux, 1838 = Indonaia bonneaudii Unio boykinianus Lea, 1840 = Megalonaias nervosa Unio bulloides Lea, 1859 = Diplodon variabilis Unio caeruleus form trirostris ‘Benson’ Sowerby, 1868 = Indonaia caerulea Unio calamitarum Morelet, 1849 = Nephronaias calamitarum Unio calceola Lea, 1828 = Pressodonta viridis+ Alasmodonta truncata Conrad, 1834
 Unio caldwellii Lea, 1858 = Nephronaias caldwellii Unio camptodon Say, 1832 = Uniomerus tetralasmus+ Unio declivis Conrad, 1836
 + Unio sayii Tappan, 1839
 Unio capigliolo Payraudeau, 1826 = Unio mancus Unio cerinus Conrad, 1838 = Fusconaia cerina Unio charruanus d’Orbigny, 1835 = Diplodon charruanus+ Unio faba d’Orbigny, 1835
 Unio churchilleanus [sic] Bourguignat, 1857 = Pseudodontopsis euphratica Unio cinnamominus [sic] (Lea, 1861) = Pleurobema perovatum Unio clairbornensis [sic] Lea, 1838 = Lampsilis straminea Unio clava Lamarck, 1819 = Pleurobema clava Unio coccineus Lea, 1838 = Pleurobema sintoxia+ Unio catillus Conrad, 1836
 Unio compressa (Lea, 1829) = Platynaias compressa Unio concavus Lea, 1852 = Villosa delumbis Unio concolor Lea, 1861 = Pleurobema perovatum Unio connasaughensis [sic] (Lea, 1858) = Pseudodontoideus connasaugaensis Unio consanguineus Lea, 1861 = Pleurobema decisum Unio constrictus Conrad, 1838 = Venustaconcha constricta Unio cordatus ‘Raf.’ Conrad, 1836 = Fusconaia flava Unio corrianus Lea, 1834 = Lamellidens corrianus Unio corrientesensis (d’Orbigny, 1835) = Monocondylaea corrientesensis Unio corrugatus (Müller, 1774) = Parreysia corrugata+ Mya spuria Gmelin, 1791
 Unio corvus Lea, 1859 = Elliptio congaraea Unio costulatus Moricand, 1858 = Monocondylaea costulata Unio couchianus (Lea, 1860) = Quadrula couchiana Unio crassidens Lamarck, 1819 = Ortmanniana ligamentina Unio crassus Say, 1817 = Ortmanniana ligamentina Unio crebristriatus (Anthony, 1865) = Indopseudodon crebristriatus Unio cuprinus Lea, 1831 = Popenaias metallica Unio curreyana [sic] (Lea, 1840) = Pegias fabula Unio d’orbignianus [sic] Deville & Hupé, 1850 = Castalia orbignyi Unio dariensis Lea, 1842 = Elliptio dariensis Unio decoratus Lea, 1852 = Platynaias decorata Unio decumbens Lea, 1861 = Elliptio complanata Unio dehiscens Say, 1829 = Hemistena lata+ Unio oriens Lea, 1831
 Unio deltoideus (Lea, 1838) = Pressodonta viridis Unio depressa d’Orbigny, 1835 = Diplodon chilensis+ Unio auratus Philippi, 1847
 Unio digitiformis Sowerby, 1868 = Diplodon parallelopipedon Unio discus Lea, 1838 = Disconaias disca Unio downei [sic] Lea, 1858 = Elliptio downiei Unio dunkerianus Lea, 1856 = Diplodon ellipticus Unio duttonianus Lea, 1841 = Elliptio lanceolata Unio ebenus Lea, 1831 = Reginaia ebenus Unio elegans Lea, 1831 = Truncilla truncata+ Unio truncatus Say, 1834
 Unio ellipsis Lea, 1828 = Obovaria olivaria Unio ellipticus Spix = Diplodon granosus+ Unio psammactinus Philippi, 1848
 Unio ellipticus Spix = Diplodon ellipticus Unio elongatulus ‘Mühlf.’ Rossmässler, 1835 = Unio mancus+ Unio requienii Michaud, 1831
 Unio elongatulus ‘Mühlf.’ Rossmässler, 1835 Unio elongatus Lamarck, 1819 = Margaritifera margaritifera Unio emarginatus Lea, 1834 = Unio mancus Unio excavatus Lea, 1857 = Lampsilis ornata Unio eximius Lea, 1856 = Lens eximius Unio fabula (Lea, 1838) = Pegias fabula Unio falcatus (Gould, 1850) = Margaritifera falcata Unio fallax Lea, 1857 = Leaunio lienosus Unio famelicus Gould, 1850 = Diplodon granosus Unio favosus Lea, 1856 = Pleurobema georgianum Unio folliculatus Lea, 1838 = Elliptio folliculata Unio fontaineanus [sic] d’Orbigny, 1843 = Diplodon rotundus+ Unio rotundus Moricand, 1838
 Unio fontaineanus [sic] d’Orbigny, 1843 = Diplodon fontainianus Unio forbesianus Lea, 1852 = Elliptio congaraea Unio fossiculiferus (d’Orbigny, 1835) = Fossula fossiculifera Unio fulvus Lea, 1834 = Elliptio congaraea Unio gesnerii Lea, 1874 = Pseudodontoideus subvexus Unio gibbosus Barnes, 1823 = Eurynia dilatata Unio glaber Lea, 1838 = Cambarunio iris Unio glebulus Say, 1831 = Glebula rotundata+ Unio subglobosus Lea, 1834
 Unio gratus Lea, 1860 = Diplodon gratus Unio griffithianus Lea, 1834 = Elliptio complanata Unio guarayana d’Orbigny, 1835 = Monocondylaea guarayana Unio heermanni Lea, 1862 = Cyrtonaias berlandierii Unio higginsii Lea, 1857 = Lampsilis higginsii Unio hochstetteri Dunker, 1862 = Echyridella menziesii Unio holstonianus [sic] (Lea, 1838) = Alasminota holstonia Unio hopetownensis [sic] Lea, 1838 = Elliptio hopetonensis Unio houstonensis Lea, 1859 = Pustulosa pustulosa Unio hylaeus d’Orbigny, 1835 = Diplodon hylaeus+ Unio guaraniana d’Orbigny, 1835
 Unio hylaeus d’Orbigny, 1835 = Diplodon guaranianus Unio isocardioides (Lea, 1856) = Iheringella isocardiodes Unio japanensis Lea, 1859 = Pronodularia japanensis Unio javanus Lea, 1840 = Lens contradens+ Unio mutatus Mousson, 1849
 Unio jayensis var. æquillus [sic] Lea, 1857 = Elliptio pullata Unio kirtlandianus Lea, 1834 = Fusconaia subrotunda Unio lamarckianus Lea, 1852 = Cyprogenia aberti+ Unio aberti Conrad, 1850
 Unio lamellatus Lea, 1838 = Lamellidens lamellatus Unio lampreyanus Baird & Adams, 1867 = Schistodesmus lampreyanus Unio latissimus Sowerby, 1868 = Lampsilis cardium Unio lazarus Lea, 1852 = Elliptio arctata Unio lienosus Conrad, 1834 = Leaunio lienosus Unio lineatus Lea, 1840 = Lampsilis binominata Unio lugubris Lea, 1838 = Elliptio icterina Unio luteolus Lamarck, 1819 = Lampsilis radiata Unio lutulentus Gould, 1851 = Echyridella menziesii Unio macrodon Lea, 1859 = Truncilla macrodon Unio margaritiferus (Linnaeus, 1758) = Margaritifera margaritifera Unio medius Lea, 1861 = Pleurobema georgianum Unio melinus (Conrad, 1838) = Lampsilis radiata Unio minuanus (d’Orbigny, 1835) = Monocondylaea minuana+ Unio (Monocondylaea) parchappii d’Orbigny, 1835
 Unio minuanus (d’Orbigny, 1835) = Monocondylaea parchappii Unio mouhotianus [sic] (Lea, 1866) = Bineurus mouhotii Unio multiradiatus Lea, 1829 = Lampsilis fasciola+ Unio fasciolus Say, 1834
 + Unio ligamentinus Deshayes, 1835
 Unio multistriatus Lea, 1831 = Diplodon multistriatus Unio natalensis Lea, 1864 = Unio caffer Unio neglectus Lea, 1841 = Platynaias subviridis Unio newcombianus Lea, 1856 = Arotonaias cyrenoides+ Unio sagrinatus Sowerby, 1868
 Unio niger Conrad (as of Raf.) = Elliptio crassidens Unio niloticus Cailliaud, 1827 = Indonaia olivaria+ Unio pumilio Küster, 1862
 + Unio parreyssi Philippi, 1848
 Unio niloticus Cailliaud, 1827 = Coelatura aegyptiaca Unio nodulosus (Wood, 1815)+ Mya nodulosa Wood, 1815
 + Unio grandidens Lea, 1862
 Unio nodulosus (Wood, 1815) = Aculamprotula nodulosa Unio nodulosus (Wood, 1815) = Aculamprotula grandidens Unio nux persicus Dunker, 1848 = Nodularia nuxpersicae Unio nyassensis [sic] Lea, 1864 = Nyassunio nyassaensis+ Unio nyassae Sowerby, 1866
 Unio occatus Lea, 1860 = Indonaia gratiosa Unio ochraceus Say, 1817 = Atlanticoncha ochracea Unio oregonensis Lea, 1852 Unio oriens Lea, 1831 = Hemistena lata Unio orientalis Lea, 1840 = Elongaria orientalis+ Unio productus Mousson, 1849
 Unio osbecki Philippi, 1844 = Nodularia douglasiae+ Unio douglasiae Griffith & Pidgeon, 1833
 Unio parallelopipedon Lea, 1834 = Diplodon parallelopipedon Unio parma ‘Benson’ Sowerby, 1868 = Leoparreysia tavoyensis Unio pazii Lea, 1862 = Ensidens ingallsianus Unio peguensis Anthony, 1865 = Yaukthwa peguensis Unio pellis-lacerti Morelet, 1865 = Scabies scobinatus+ Unio crispata Gould, 1843
 Unio pellis-lacerti Morelet, 1865 = Scabies crispata Unio peraeformis Lea, 1860 = Diplodon peraeformis Unio perdix Lea, 1834 = Ortmanniana pectorosa Unio perstriatus Lea, 1852 = Elliptio arctata Unio phaseolus Hildreth, 1828 = Ptychobranchus fasciolaris+ Unio planulatus Lea, 1829
 Unio pictus Lea, 1834 = Cambarunio taeniatus Unio piger Lea, 1860 = Diplodon uruguayensis Unio plantii Lea, 1857 = Elliptio fumata Unio platyrrhinchoideus [sic] Dupuy, 1849 = Unio pictorum Unio plenus Lea, 1840 = Pleurobema plenum Unio pliciferus Lea, 1838 = Sphenonaias plexus+ Unio carbonarius Lea, 1838
 + Unio plexus Conrad, 1838
 Unio poeyanus Lea, 1857 = Nephritica poeyana Unio popei Lea, 1857 = Popenaias popeii Unio powellii Lea, 1852 = Lampsilis powellii Unio prevostianus Lea, 1852 = Villosa vibex Unio propinquus Lea, 1857 = Epioblasma propinqua Unio psammoicus d’Orbigny, 1835 = Castalia psammoica Unio pudicus Lea, 1860 = Pleuronaia barnesiana Unio pugio Benson, 1862 = Indochinella pugio Unio pullatus Lea, 1856 = Elliptio pullata Unio purpureus Say, 1817 = Elliptio congaraea+ Mya complanata Lightfoot, 1786
 + Unio fuliginosus Lea, 1845
 + Unio sordidus Lea, 1852
 + Unio purpurascens Lamarck, 1819
 + Unio rhombula Lamarck, 1819
 + Unio carinifera Lamarck, 1819
 + Unio georgina Lamarck, 1819
 + Unio glabrata Lamarck, 1819
 + Unio sulcidens Lamarck, 1819
 Unio purpureus Say, 1817 = Elliptio complanata Unio pyramidatus Lea, 1831 = Pleurobema sintoxia Unio ravistellus Morelet, 1849 = Nephronaias ravistella Unio rectilinearis Sowerby, 1868 = Unio caffer Unio regularis Lea, 1841 = Cambarunio iris Unio reniformis ‘Schmidt’ Rossmässler, 1836 = Unio nanus Unio reticulatus Moricand, 1858 = Monocondylaea paraguayana+ Alasmidonta schomburgki Sowerby, 1868
 Unio reticulatus Moricand, 1858 = Monocondylaea jaspidea Unio retusus Lamarck, 1819 = Obovaria retusa+ Obovaria torsa Rafinesque, 1820
 + Unio obtusa Cuvier, 1817
 Unio rhomboideus (Lea, 1859) = Pseudodontopsis euphratica Unio riddellii Lea, 1862 = Pleurobema riddellii Unio roanoakensis [sic] Lea, 1838 = Elliptio roanokensis Unio rotundus Spix = Diplodon rotundus Unio rowellii Lea, 1859 = Nephronaias rowellii Unio rubellianus [sic] Lea, 1857 = Medionidus acutissimus Unio rufusculus Lea, 1852 = Elliptio congaraea Unio rusticus Lea, 1856 = Lens contradens+ Unio tumidulus Lea, 1856
 Unio sagittiformis Lea, 1852 = Elliptio lanceolata Unio salwenianus (Gould, 1844) = Indopseudodon salwenianus Unio sandrii ‘Villa’ Rossmässler, 1844 = Unio elongatulus Unio sapotalensis Lea, 1841 = Actinonaias sapotalensis Unio satur Lea, 1852 = Lampsilis satura Unio scobinatus Lea, 1856 = Scabies scobinatus Unio scutum ‘Benson’ Sowerby, 1868 = Trapezidens scutum Unio securis Lea, 1829 = Ellipsaria lineolata+ Obliquaria (Plagiola) depressa Rafinesque, 1820
 Unio showalterii Lea, 1860 = Pleurobema hartmanianum Unio siculus (Swainson, 1840) = Unio mancus+ Unio turtonii Payraudeau, 1826
 Unio siculus (Swainson, 1840) = Unio elongatulus Unio sikkimensis Lea, 1859 = Parreysia corrugata Unio sinuata Lamarck, 1819 = Margaritifera margaritifera+ Unio roissyi Michaud, 1831
 + Unio elongata Michaud, 1831
 Unio sinuata Lamarck, 1819 = Pseudunio auricularius Unio solisianus d’Orbigny, 1835 = Diplodon solisianus Unio spatulatus Lea, 1845 = Venustaconcha ellipsiformis Unio speciosus Lea, 1862 = Quadrula quadrula Unio spillmannii [sic] (Lea, 1858) = Pseudodontoideus subvexus Unio spissus Lea, 1859 = Elliptio downiei Unio stonensis Lea, 1840 = Eurynia dilatata Unio stramineus Conrad, 1834 = Lampsilis straminea Unio striatissimus Anthony, J.G., 1865 = Pleurobema oviforme Unio striatulus Lea, 1857 = Fusconaia masoni Unio striatus Lea, 1840 = Pleurobema pyriforme Unio subangulatus Lea, 1840 = Hamiota subangulata Unio subtentus Say, 1825 = Ptychobranchus subtentus Unio subtortus Baird & Adams, 1867 = Aculamprotula tortuosa Unio swainsoni ‘Hanley’ Sowerby, 1868 = Alasmidonta undulata+ Uniopsis mytiloides Swainson, 1840
 + Uniopsis radiata Swainson, 1840
 Unio taitanus [sic] Lea, 1834 = Pleurobema taitianum Unio teretiusculus Philippi, 1847 = Nitia teretiuscula+ Margarita (Unio) cailliaudii Lea, 1836
 + Unio lithophagus Philippi, 1847
 Unio tientsinensis Crosse & Debeaux, 1863 = Aculamprotula tientsinensis Unio tortuosus Sowerby, 1868 = Elliptio complanata Unio triangularis Barnes, 1823 = Epioblasma triquetra+ Unio formosus Lea, 1831
 Unio triangulata (Lea, 1858) = Alasmidonta triangulata Unio trigonus Lea, 1831 = Fusconaia flava+ Unio undatus Barnes, 1823
 Unio trinacris [sic] Lea, 1861 = Ptychobranchus foremanianus Unio troostensis Lea, 1834 = Venustaconcha troostensis+ Unio trabalis Conrad, 1834
 Unio troostensis Lea, 1834 = Venustaconcha trabalis Unio truncatus Swainson, 1823 = Unio tigridis Unio tumidulus Lea, 1856 = Lens contradens Unio undulatus Say, 1817 = Alasmidonta undulata+ Alasmodonta sculptilis Say, 1829
 + Unio hians Valenciennes, 1827
 + Unio glabratus Sowerby & Sowerby, 1821
 Unio uruguayensis Lea, 1860 = Diplodon uruguayensis Unio variabilis (Maton, 1811) = Diplodon variabilis+ Unio membranacea Hanley, 1843
 Unio vaughanianus Lea, 1838 = Sagittunio vaughanianus Unio velaris ‘Benson MS’ Hanley, 1856 = Physunio superbus Unio venustus Lea, 1838 = Venustaconcha ellipsiformis Unio verrauianus [sic] Lea, 1856 = Unio caffer Unio verrucosa (Rafinesque, 1820) = Quadrula verrucosa+ Unio tuberculatus Barnes, 1823
 + Unio (Theliderma) pustulata Swainson, 1840
 Unio vondembuschii [sic] (Lea, 1840) = Pseudodon vondembuschianus Unio vondenbuschianus (Lea, 1840) = Pseudodon vondembuschianus+ Alasmodonta crispata Mousson, 1849
 + Alasmodonta zollingeri Mousson, 1849
 Unio wardii Lea, 1862 = Theliderma metanevra Unio wheatleyanus Lea, 1856 = Diplodon burroughianus Unio wilsonii Lea, 1859 = Velesunio wilsonii Unio wymanii Lea, 1860 = Diplodon wymanii Unio wynegungensis [sic] Lea, 1860 = Parreysia corrugata |