Publication Conrad (1853): species taxonomic opinions

Conrad, T.A. 1853. A synopsis of the family of Naïades of North America, with notes, and a table of some of the genera and sub-genera of the family, according to their geographical distribution, and descriptions of genera and sub-genera. Proceedings of the Academy of Natural Sciences of Philadelphia 6: 243-269. https://www.biodiversitylibrary.org/page/1779779.

Alasmodonta arcula (Lea, 1838) = Alasmidonta arcula

Alasmodonta confragosa Say = Arcidens confragosus

Alasmodonta marginata (Say) = Alasmidonta marginata + Alasmidonta varicosa

+ Unio varicosa Lamarck, 1819

+ Unio rugulosus Wood, 1828

+ Alasmodonta truncata ‘Say, in lit.’ of Authors

Anodonta angulata Lea = Gonidea angulata

Anodonta benedictensis Lea = Pyganodon grandis

Anodonta buchanensis Lea = Anodontoides ferussacianus

Anodonta californiensis Lea = Brachyanodon californiensis

Anodonta cataracta Say = Pyganodon cataracta

+ Anodonta fluviatilis ‘Gmelin’ of Authors

Anodonta cognata Gould = Brachyanodon oregonensis

Anodonta couperiana Lea = Utterbackiana couperiana

Anodonta cylindracea Lea = Anodontites cylindracea

Anodonta declivis Con., 1834 = Pyganodon grandis

+ Anodonta plana Lea, 1834

Anodonta decora Lea = Pyganodon grandis

Anodonta denigrata Lea, 1852 = Anodontoides denigratus

Anodonta excurvata Dekay = Pyganodon cataracta

Anodonta ferruginea Lea = Anodontoides ferussacianus

Anodonta ferussaciana Lea = Anodontoides ferussacianus

Anodonta footiana Lea = Pyganodon grandis

Anodonta fragilis Lam. = Pyganodon fragilis

Anodonta gibbosa Say, 1824 = Pyganodon gibbosa

Anodonta gigantea Lea = Pyganodon grandis

Anodonta glauca Valen. = Anodontites trapesialis

Anodonta grandis Say, 1829 = Pyganodon grandis

+ Anodonta corpulenta Cooper, 1834

Anodonta harpenthis [sic] Lea = Pyganodon grandis

Anodonta imbecilis [sic] Say, 1829 = Utterbackia imbecillis

+ Anodonta incerta Lea, 1834

Anodonta implicata Say = Utterbackiana implicata

+ Anodonta newtonensis Lea, 1838

Anodonta impura Say, 1829 = Brachyanodon impura

Anodonta linneana [sic] Lea = Pyganodon grandis

Anodonta lugubris Say, 1829 = Pyganodon grandis

Anodonta marginata Say = Pyganodon cataracta

Anodonta marryattana [sic] Lea = Pyganodon grandis

Anodonta nuttalliana Lea = Brachyanodon nuttalliana

Anodonta oblita Lea, 1852 = Anodontoides denigratus

Anodonta opaca Lea, 1852 = Pyganodon grandis

Anodonta oregonensis Lea = Brachyanodon oregonensis

Anodonta ovata Lea = Pyganodon grandis

Anodonta pavonia Lea = Strophitus undulatus

Anodonta pepiniana Lea = Pyganodon grandis

Anodonta plicata Hald. = Anodontoides denigratus

Anodonta salmonia Lea = Pyganodon grandis

Anodonta stewartiana Lea = Pyganodon grandis

Anodonta subcylindracea Lea = Anodontoides ferussacianus

Anodonta suborbiculata Say = Utterbackiana suborbiculata

Anodonta subvexa Con. = Pseudodontoideus subvexus

Anodonta teres Con. = Pyganodon cataracta

Anodonta virens Lea = Pyganodon grandis

Anodonta wahlamatensis Lea = Brachyanodon nuttalliana

Coelatura aegyptiacus Caill. = Coelatura aegyptiaca

Complanaria complanata (Barnes) = Pterosyna complanata

+ Unio katherinae Lea, 1838

Complanaria compressa (Lea, 1832) = Platynaias compressa

+ Complanaria alasmodontina Stimpson, 1851

Complanaria costata (Raf.) = Lasmigona costata

+ Alasmodonta rugosa Barnes, 1823

Cucumaria cucumoides (Lea) = Cucumerunio novaehollandiae

Hyriopsis delphinus (Gruner) = Hyriopsis bialata

Leptodea lata Raf. = Hemistena lata

+ Unio dehiscens Say, 1829

+ Unio oriens Lea, 1831

Leptodea leptodon Raf. = Potamilus leptodon + Potamilus fragilis

+ Unio planus Barnes, 1823

+ Anodon purpurascens Swainson, 1823

+ Symphynota tenuissima Lea, 1829

Margaritana arcuata (Barnes) = Margaritifera margaritifera

Margaritana falcata Gould = Margaritifera falcata

Margaritana monodonta (Say) = Cumberlandia monodonta

+ Unio soleniformis Lea, 1831

Metaptera alata (Say) = Potamilus alatus

+ Metaptera megaptera Rafinesque, 1820

Metaptera fragilis (Raf.) = Potamilus fragilis

+ Unio fragilis ‘Rafinesque’ of Authors

+ Unio gracilis Barnes, 1823

Metaptera inflata (Lea) = Potamilus inflatus

+ Unio inflatus Conrad, 1836

+ Unio alabamensis Conrad, 1834

Metaptera ohiensis (Raf.) = Potamilus ohiensis

+ Symphynota laevissima Lea, 1829

Monodontina buschiana (Con.) = Pseudodon vondembuschianus

+ Margaritana vondembuschiana Lea, 1840

Nodularia douglasiæ (Gray) = Nodularia douglasiae

Parreysia multidentatus (Parreyss) = Parreysia corrugata

Plectomerus atromarginatus (Lea) = Elliptoideus sloatianus

Plectomerus boykianus [sic] (Lea) = Megalonaias nervosa

Plectomerus costatus (Raf.) = Amblema plicata

+ Unio costatus ‘Rafinesque’ of Authors

+ Unio undulatus Barnes, 1823

+ Unio latecostatus Lea, 1845

Plectomerus crassidens (Lam.) = Plectomerus dombeyanus

+ Unio interruptus Say, 1831

+ Unio trapezoides Lea, 1831

Plectomerus nicklinianus (Lea) = Megalonaias nickliniana

Plectomerus perplicatus (Con.) = Amblema plicata

+ Unio atrocostatus Lea, 1845

Plectomerus plectophorus (Con.) = Elliptoideus sloatianus

Plectomerus plicatus (Say) = Amblema plicata + Plectomerus dombeyanus

+ Unio peruviana Lamarck, 1819

+ Unio rariplicata Lamarck, 1819

+ Unio dombeyana Valenciennes, 1827

+ Unio crassus Barnes, 1823

+ Unio hippopoeus Lea, 1845

Plectomerus sloatianus (Lea) = Elliptoideus sloatianus

Strophitus argentea (Lea) = Anodontoides denigratus

Strophitus arkansensis (Lea) = Strophitus undulatus

Strophitus calceolus (Lea) = Sulcularia viridis

Strophitus curreyanus [sic] (Lea) = Pegias fabula

Strophitus deltoideus (Lea) = Sulcularia viridis

Strophitus edentulus (Say) = Strophitus undulatus

+ Anodon areolatus Swainson, 1829

Strophitus etowaosis [sic] (Con., 1849) = Alasminota etowaensis

Strophitus fabula (Lea) = Pegias fabula

Strophitus hildrethianus (Lea) = Simpsonaias ambigua

Strophitus holstonia (Lea) = Alasminota holstonia

Strophitus minor (Lea) = Sulcularia viridis

Strophitus radiatus (Con.)

Strophitus ravenelianus (Lea) = Alasmidonta raveneliana

Strophitus shæfferiana (Lea) = Strophitus undulatus

Strophitus tetragona (Lea, 1846) = Strophitus undulatus

Strophitus unadilla (Dekay) = Strophitus undulatus

Strophitus undulatus (Say)

+ Anodon rugosus Swainson, 1822

+ Anodonta pensylvanica Lamarck, 1819

Strophitus virgatus (Conrad, 1836) = Strophitus undulatus

+ Anodonta wardiana Lea, 1838

Unio abacus Hald. = Ptychobranchus fasciolaris

Unio aberti Con., 1850 = Cyprogenia aberti

+ Unio lamarckianus Lea, 1852

Unio acutissimus Lea, 1834 = Medionidus acutissimus

Unio affinis Lea, 1852 = Lampsilis straminea

Unio altilis Con. = Hamiota altilis

Unio amœnus Lea, 1841 = Cambarunio iris

Unio amygdalum Lea, 1846 = Villosa amygdalum

Unio angustatus Lea, 1832 = Elliptio angustata

Unio apiculatus Say, 1829 = Quadrula quadrula

+ Unio asper Jay, 1839

Unio approximus Lea, 1845 = Lampsilis hydiana

Unio arctatus Con. = Elliptio arctata

Unio arctior Lea, 1838 = Eurynia dilatata

Unio argenteus Lea, 1841 = Pleurobema oviforme

Unio asper Lea, 1832 = Quadrula quadrula

Unio barnesianus Lea, 1838 = Pleuronaia barnesiana

Unio barrattii Lea, 1852 = Elliptio icterina

Unio biangulatus Lea, 1841 = Ortmanniana pectorosa

Unio bigbyensis Lea, 1841 = Pleuronaia barnesiana

Unio binneyi Lea, 1845 = Diplodon rhuacoicus

Unio blandingianus Lea, 1834 = Uniomerus carolinianus

Unio bournianus Lea, 1841 = Pleurobema clava

Unio boydianus Lea, 1841 = Atlanticoncha ochracea

Unio brumbyanus Lea, 1841 = Ptychobranchus greenii

Unio buckleyi Lea, 1846 = Elliptio jayensis

Unio buddianus Lea, 1846 = Elliptio jayensis

Unio bullatus Raf., 1820 = Pustulosa pustulosa + Cyprogenia stegaria

+ Unio verrucosus albus Hildreth, 1828

+ Unio pustulosus Lea, 1831

Unio buxeus Lea, 1852 = Elliptio congaraea

Unio caliginosus Lea, 1845 = Leaunio lienosus

Unio callosus Lea, 1841 = Ortmanniana ligamentina

Unio capax Green, 1832 = Potamilus capax

+ Symphynota globosa Lea, 1834

Unio capsæformis Lea, 1834 = Epioblasma capsaeformis

Unio cardium Raf., 1820 = Lampsilis cardium + Lampsilis cariosa

+ Unio ventricosus Barnes, 1823

+ Unio occidens Lea, 1829

+ Unio subovatus Lea, 1831

+ Unio ovata Lamarck, 1819

Unio cariosus Say = Lampsilis cariosa + Lampsilis cardium

+ Unio ovata Valenciennes, 1827

+ Unio cariosus De Kay, 1843

Unio carolinanus [sic] Bosc = Uniomerus carolinianus

+ Unio obesus Lea, 1831

Unio castaneus Lea, 1832 = Obovaria arkansasensis

Unio catillus Conrad, 1836 = Pleurobema sintoxia

Unio cerinus Con., 1838 = Fusconaia cerina

Unio cicatricosus Say, 1829 = Plethobasus cicatricosus

+ Unio varicosus Lea, 1831

Unio cincinnatiensis Lea, 1841 = Epioblasma cincinnatiensis

Unio claibornensis Lea, 1838 = Lampsilis straminea

+ Unio obtusus Lea, 1840

Unio clarkianus Lea, 1852 = Hamiota altilis

Unio clava Lamarck, 1819 = Pleurobema clava

+ Pleurobema mytiloides Rafinesque, 1820

+ Obliquaria (Scalenaria) scalenia Rafinesque, 1820

+ Pleurobema cuneata Rafinesque, 1820

+ Unio modioliformis ‘Say’ of Authors

+ Unio clavus Conrad, 1835

Unio coccineus ‘Hildreth’ MSS = Pleurobema sintoxia

+ Unio coccineus Lea, 1838

Unio collinus Con. = Parvaspina collina

Unio complanatus Solander = Elliptio complanata

+ Unio violaceus Spengler, 1793

+ Unio coarctata Lamarck, 1819

+ Unio purpurascens Lamarck, 1819

+ Unio rhombula Lamarck, 1819

+ Unio carinifera Lamarck, 1819

+ Unio georgina Lamarck, 1819

+ Unio sulcidens Lamarck, 1819

+ Unio glabrata Lamarck, 1819

+ Unio rarisulcata Lamarck, 1819

+ Unio (Elliptio) aurata Rafinesque, 1820

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Unio compressissimus Lea, 1845 = Ptychobranchus fasciolaris

Unio concavus Lea, 1852 = Villosa delumbis

Unio congaræus Lea, 1832 = Elliptio congaraea

Unio conradicus Lea, 1834 = Medionidus conradicus

Unio constrictus Con. = Venustaconcha constricta

Unio contrarius Con. = Lampsilis straminea

Unio cooperianus Lea, 1834 = Plethobasus cooperianus

Unio cor Con. = Fusconaia cor

Unio cordatus (Raf.) = Pleurobema cordatum

Unio creperus Lea = Cambarunio iris

Unio crocatus Lea, 1841 = Atlanticoncha ochracea

Unio cumberlandianus Lea, 1838 = Cambarunio simus

+ Unio cumberlandicus Lea, 1838

Unio cuneolus Lea, 1842 = Fusconaia cuneolus

Unio cuvierianus Lea, 1852 = Elliptio complanata

Unio cylindricus Say = Theliderma cylindrica

+ Unio naviformis Lamarck, 1819

+ Unio (Eurynia) solenoides Rafinesque, 1820

Unio cyphius [sic] Raf. = Plethobasus cyphyus

+ Unio aesopus Green, 1827

Unio cyrenoides Philippi, 1848 = Arotonaias cyrenoides

Unio dactylus Lea, 1841 = Cambarunio dactylus

Unio dariensis Lea, 1841 = Elliptio dariensis

Unio decisus Lea, 1832 = Pleurobema decisum

Unio declivis Say, 1831 = Uniomerus declivis

+ Unio geometricus Lea, 1834

Unio decoratus Lea, 1852 = Platynaias decorata

Unio delumbis Con. = Villosa delumbis + Villosa vibex

+ Unio modioliformis Lea, 1834

Unio dilatatus Raf. = Eurynia dilatata

+ Obliquaria (Ellipsaria) cuprea Rafinesque, 1820

+ Obliquaria (Ellipsaria) atroviolacea Rafinesque, 1820

+ Unio nasuta Lamarck, 1819

+ Unio gibbosus Barnes, 1823

Unio discus Lea, 1838 = Disconaias disca

Unio dolabelloides Lea, 1842 = Pleuronaia dolabelloides

Unio dorfeuillianus Lea, 1838 = Pustulosa pustulosa

Unio dromas Lea, 1834 = Dromus dromas

+ Unio caperatus Lea, 1845

Unio duttonianus Lea, 1841 = Parvaspina lanceolata

Unio edgarianus Lea, 1841 = Fusconaia cor

Unio excultus Con. = Uniomerus declivis

+ Margaron (Unio) declivis Lea, 1852

Unio exiguus Lea, 1842 = Villosa vibex

Unio famelicus Gould = Diplodon granosus

Unio fasciatus [Raf.] = Ortmanniana ligamentina

+ Unio crassus Say, 1817

+ Unio carinatus Barnes, 1823

+ Unio ellipticus Barnes, 1823

Unio fasciolaris Raf. = Ptychobranchus fasciolaris + Eurynia dilatata

+ Unio phaseolus Hildreth, 1828

+ Obliquaria (Ellipsaria) sinuata Rafinesque, 1820

+ Unio mucronatus Barnes, 1823

+ Unio planulatus Lea, 1829

+ Unio cuneatus Hildreth, 1828

+ Unio camelus Lea, 1834

Unio fasciolus Raf. = Lampsilis fasciola + Hamiota subangulata

+ Unio subangulatus Lea, 1840

Unio fatuus Lea = Cambarunio iris

Unio fisherianus Lea, 1838 = Elliptio fisheriana + Elliptio producta

+ Unio nasutus Conrad, 1838

Unio flavescens Lea, 1845 = Ptychobranchus greenii

Unio flavus Raf. = Fusconaia flava

+ Unio flavus Conrad, 1837

+ Unio rubiginosus Lea, 1829

Unio flexuosus Raf. = Epioblasma flexuosa

+ Unio flexuosus ‘Rafinesque’ of Authors

+ Unio foliatus Hildreth, 1828

Unio floridensis Lea, 1852 = Lampsilis floridensis

Unio folliculatus Lea, 1838 = Elliptio folliculata

Unio forbesianus Lea, 1852 = Elliptio congaraea

Unio foremanianus Lea, 1841 = Ptychobranchus foremanianus

Unio fraternus Lea, 1852 = Elliptio fraterna

Unio fulgidus Lea, 1845 = Pleurobema sintoxia

Unio fuliginosus Lea, 1845 = Elliptio complanata

Unio furvus Con. = Pleurobema rubellum + Pleurobema hanleyianum + Pleurobema georgianum

+ Unio hanleyianus Lea, 1852

+ Unio troschelianus Lea, 1852

Unio fuscatus Lea, 1846 = Elliptio occulta

Unio geddingsianus Lea, 1841 = Elliptio icterina

Unio georgianus Lea, 1841 = Pleurobema georgianum

Unio gibber Lea = Pleuronaia gibber

Unio gibbesianus Lea, 1852 = Elliptio congaraea

Unio glaber Lea, 1838 = Cambarunio iris

Unio glans Lea, 1832 = Toxolasma glans

Unio gouldii Lea, 1845 = Leaunio lienosus

Unio graniferus Lea = Cyclonaias tuberculata

Unio greenii Con. = Ptychobranchus greenii

+ Unio simplex Lea, 1845

Unio griffithianus Lea, 1834 = Elliptio complanata

Unio haleianus Lea, 1842 = Leaunio lienosus

Unio hayesianus [sic] Lea, 1834 = Epioblasma haysiana

Unio hebes Lea, 1852 = Uniomerus carolinianus

Unio heterodon Lea, 1833 = Prolasmidonta heterodon

Unio holstonensis Lea, 1841 = Pleurobema oviforme

Unio hopetonensis Lea, 1838 = Elliptio hopetonensis

Unio hyalinus Lea, 1845 = Platynaias subviridis

Unio hydianus Lea, 1838 = Lampsilis hydiana

Unio icterinus Con. = Elliptio icterina + Elliptio congaraea

+ Unio fulvus Lea, 1834

Unio ineptus Lea, 1852 = Uniomerus carolinianus

Unio infucatus Co. = Pustulosa infucata

Unio intermedius Con. = Theliderma intermedia

Unio interruptus Raf. = Ptychobranchus fasciolaris + Epioblasma brevidens

+ Unio interruptus ‘Rafinesque’ of Authors

+ Unio brevidens Lea, 1831

Unio jejunus Lea, 1838 = Elliptio complanata

Unio keinerianus [sic] Lea, 1852 = Pustulosa kieneriana

+ Unio keinerianus Lea, 1852

Unio kirtlandianus Lea, 1834 = Fusconaia subrotunda

Unio kleinianus Lea, 1852 = Pustulosa kleiniana

Unio lapillus Say, 1831 = Paetulunio fabalis

+ Unio fabalis Lea, 1831

Unio latiradiatus Con. = Cambarunio taeniatus

+ Unio interruptus Lea, 1838

Unio lazarus Lea, 1852 = Elliptio arctata

Unio lævigatus [sic] Raf. = Obovaria subrotunda

+ Unio lens Lea, 1831

Unio lecontianus Lea, 1838 = Elliptio congaraea

Unio lenior Lea, 1841 = Epioblasma lenior

Unio leseurianus [sic] Lea, 1842 = Fusconaia subrotunda

Unio lienosus Con. = Leaunio lienosus + Cambarunio iris

+ Unio obscurus Lea, 1838

Unio ligamentinus Lam. = Ortmanniana ligamentina + Lampsilis fasciola

+ Unio fasciolus ‘Rafinesque’ of Authors

+ Unio multiradiatus Lea, 1829

Unio limatulus Con., 1849 = Elliptio icterina

+ Unio tuomeyi Lea, 1852

Unio lineatus Lea, 1841 = Lampsilis binominata

Unio lineolatus (Raf.) = Ellipsaria lineolata

+ Obliquaria (Plagiola) depressa Rafinesque, 1820

+ Unio securis Lea, 1829

Unio lugubris Lea = Elliptio icterina

Unio luridus Lea = Elliptio arca

Unio luteolus Lam. = Lampsilis radiata + Lampsilis siliquoidea

+ Unio siliquoideus Barnes, 1823

+ Unio inflatus Barnes, 1823

Unio maculatus Con., 1834 = Pleuronaia dolabelloides

Unio masoni Con. = Fusconaia masoni

Unio menkianus Lea, 1838 = Cambarunio taeniatus

Unio merus Lea, 1852 = Fusconaia masoni

Unio metallicus Say, 1830 = Popenaias metallica

+ Unio cuprinus Lea, 1831

Unio metaneurus [sic] Raf. = Theliderma metanevra + Quadrula quadrula

+ Unio nodosus Barnes, 1823

+ Unio rugosus Barnes, 1823

Unio minor Lea, 1846 = Toxolasma paulum

Unio mississippiensis Con. = Sagittunio subrostratus

Unio mœstus Lea, 1841 = Toxolasma lividum

Unio monroensis Lea, 1841 = Elliptio monroensis

Unio mortoni Con., 1835 = Pustulosa pustulosa

+ Unio turgidus Lea, 1838

Unio moussianus [sic] Lea, 1852 = Elliptio congaraea

Unio mühlfeldianus Lea, 1838 = Cambarunio dactylus

Unio nashvillianus Lea, 1834 = Sagittunio subrostratus

Unio nasutus Say = Sagittunio nasutus

+ Unio nasutus Conrad, 1838

+ Unio rostrata Valenciennes, 1827

Unio nebulosus Con. = Cambarunio nebulosus

Unio neglectus Lea, 1846 = Platynaias subviridis

Unio nervosus Raf. = Megalonaias nervosa + Truncilla donaciformis

+ Unio nervosa ‘Rafinesque’ of Authors

+ Unio zigzag Lea, 1829

+ Unio donaciformis Lea, 1828

Unio nexus Say, 1831 = Epioblasma arcaeformis

+ Unio arcaeformis Lea, 1831

Unio nigellus Lea = Elliptio nigella

Unio niger Raf. = Elliptio crassidens

+ Unio incrassatus Lea, 1840

Unio nigerrimus Lea, 1852 = Leaunio lienosus

Unio nigrinus Lea = Villosa vibex

Unio nitens Lea = Leaunio vanuxemensis

Unio nodiferus Con. = Pustulosa pustulosa

Unio nodulatus Raf. = Pustulosa nodulata

+ Unio pustulatus Lea, 1831

+ Unio nodulatus ‘Rafinesque’ of Authors

Unio notatus Lea, 1838 = Cambarunio simus

Unio novi-eboraci Lea, 1838 = Cambarunio iris

Unio nucleopsis Con. = Pleurobema georgianum

Unio obliquata (Raf.) = Epioblasma obliquata

+ Unio ridibundus Say, 1829

+ Unio sulcatus Lea, 1829

Unio obliquus Lam. = Pleurobema cordatum + Reginaia ebenus

+ Unio obliqua ‘Lamarck’ of Authors

+ Unio ebenus Lea, 1831

+ Unio (s.s.) mytiloides Swainson, 1840

Unio obovalis Raf. = Reginaia ebenus + Pleurobema sintoxia

+ Unio solidus Lea, 1838

Unio obtusus Lea = Lampsilis straminea

Unio occidentalis Con. = Ptychobranchus occidentalis

Unio ochraceus Say = Atlanticoncha ochracea + Lampsilis cariosa

+ Mytilus fluviatilis Gmelin, 1791

+ Unio rosaceus Conrad, 1849

+ Lampsilis rosea Rafinesque, 1820

+ Lampsilis pallida Rafinesque, 1820

Unio ogeecheensis Con. = Villosa delumbis

Unio olivarius Raf. = Obovaria olivaria

+ Unio ellipsis Lea, 1828

Unio oratus Con. = Lampsilis cariosa

Unio orbiculatus Hild., 1828 = Obovaria subrotunda + Lampsilis abrupta

+ Unio abruptus Say, 1831

+ Margarita (Unio) orbiculatus Lea, 1836

+ Unio crassus Conrad, 1836

Unio oviformis Con. = Pleurobema oviforme

Unio paliatus Lea, 1845 = Elliptio complanata

Unio pallescens Lea, 1845 = Lampsilis straminea

Unio paludicolor [sic] Gould = Uniomerus carolinianus

Unio papyraceus Gould = Villosa amygdalum

Unio parvus Barnes = Toxolasma parvum

Unio paulus Lea = Toxolasma paulum

Unio pectitus Con. = Epioblasma obliquata

Unio pectorosus Con., 1834 = Ortmanniana pectorosa

+ Unio perdix Lea, 1834

Unio pellucidus Lea, 1845 = Villosa vibex

Unio penitus Con. = Epioblasma penita

Unio pernodosus Lea, 1845 = Pustulosa pustulosa

Unio perovalis Con. = Hamiota perovalis

Unio perovatus Con. = Pleurobema perovatum

+ Unio nux Lea, 1852

Unio personatus Say, 1829 = Epioblasma personata

+ Unio capillaris Lea, 1834

+ Unio pileus Lea, 1831

Unio perstriatus Lea, 1852 = Elliptio arctata

Unio pictus Lea, 1834 = Cambarunio taeniatus

Unio pilaris Lea = Fusconaia subrotunda

Unio placitus Lea, 1852 = Hamiota perovalis

Unio planitaleris [sic] Con. = Elliptio congaraea

Unio plenus Lea, 1842 = Pleurobema plenum

Unio plexus Con., 1836 = Sphenonaias plexus + Diplodon variabilis

+ Unio pliciferus Lea, 1838

+ Unio subtrapezius Philippi, 1847

+ Unio carbonarius Lea, 1838

Unio politus Say = Fusconaia subrotunda + Potomida littoralis

+ Unio brevialis Lamarck, 1819

+ Unio brevialis Crouch, 1827

+ Unio subrotundus Lea, 1831

Unio powellii Lea, 1852 = Lampsilis powellii

Unio prasinus Con., 1834 = Pustulosa pustulosa

+ Unio schoolcraftensis Lea, 1834

Unio prevostianus Lea, 1852 = Villosa vibex

Unio proximus Lea, 1852 = Leaunio lienosus

Unio pullus Con. = Toxolasma pullus

Unio pulvinulus Lea, 1845 = Pleurobema rubellum

Unio pumilis [sic] Lea, 1838 = Fusconaia masoni

Unio puniceus Haldeman = Cambarunio iris