| Common Name | Scientific Name | Code |
| n/a | Aristolochia cordifolia Mutis ex Kunth [excluded] | ARCO40 |
| Aristolochia bilabiata | Aristolochia chasmema auct. non H. Pfeifer [misapplied] | ARCH16 |
| Aristolochia bilabiata | Aristolochia oblongata auct. non Jacq. [misapplied] | AROB5 |
| Aristolochia californica | Isotrema californica (Torr.) Huber | ISCA2 |
| Aristolochia coryi | Aristolochia brevipes auct. non Benth. [misapplied] | ARBR9 |
| Aristolochia coryi | Aristolochia brevipes Benth. var. acuminata S. Wats. | ARBRA2 |
| Aristolochia elegans | Aristolochia littoralis auct. non Parodi [misapplied] | ARLI5 |
| Aristolochia erecta | Aristolochia longiflora Engelm. & Gray | ARLO10 |
| Aristolochia macrophylla | Aristolochia durior Hill | ARDU2 |
| Aristolochia macrophylla | Isotrema macrophyllum (Lam.) C.F. Reed | ISMA4 |
| Aristolochia pentandra | Aristolochia marshii Standl. | ARMA8 |
| Aristolochia serpentaria | Aristolochia convolvulacea Small | ARCO20 |
| Aristolochia serpentaria | Aristolochia hastata Nutt. | ARHA4 |
| Aristolochia serpentaria | Aristolochia nashii Kearney | ARNA2 |
| Aristolochia serpentaria | Aristolochia serpentaria L. var. hastata (Nutt.) Duchartre | ARSEH |
| Aristolochia serpentaria | Aristolochia serpentaria L. var. nashii (Kearney) Ahles | ARSEN |
| Aristolochia serpentaria | Endodeca serpentaria (L.) Raf. var. hastata (Nutt.) C.F. Reed | ENSEH |
| Aristolochia tomentosa | Isotrema tomentosa (Sims) Huber | ISTO |
| Aristolochia watsonii | Aristolochia porphyrophylla H. Pfeifer | ARPO10 |
| Asarum canadense | Asarum acuminatum (Ashe) Bickn. | ASAC7 |
| Asarum canadense | Asarum canadense L. var. acuminatum Ashe | ASCAA |
| Asarum canadense | Asarum canadense L. var. ambiguum (Bickn.) Farw. | ASCAA2 |
| Asarum canadense | Asarum canadense L. var. reflexum (Bickn.) B.L. Robins. | ASCAR |
| Asarum canadense | Asarum reflexum Bickn. | ASRE10 |
| Asarum canadense | Asarum rubrocinctum Peattie | ASRU9 |
| Asarum caudatum | Asarum caudatum Lindl. var. caudatum Lindl. [superfluous autonym] | ASCAC2 |
| Asarum wagneri | Asarum caudatum Lindl. var. viridiflorum M.E. Peck | ASCAV |
| bejuco de santiago | Aristolochia trilobata L. | ARTR5 |
| birthwort | Aristolochia clematitis L. | ARCL |
| British Columbia wildginger | Asarum caudatum Lindl. | ASCA2 |
| California dutchman's pipe | Aristolochia californica Torr. | ARCA10 |
| Canadian wildginger | Asarum canadense L. | ASCA |
| Cory's dutchman's pipe | Aristolochia coryi I.M. Johnston | ARCO8 |
| dutchman's pipe | Aristolochia L. | ARIST2 |
| dwarfflower heartleaf | Hexastylis naniflora Blomquist | HENA3 |
| elegant dutchman's pipe | Aristolochia elegans Mast. | AREL10 |
| Florida dutchman's pipe | Aristolochia maxima Jacq. | ARMA9 |
| fragrant dutchman's pipe | Aristolochia odoratissima L. | AROD |
| gaping dutchman's pipe | Aristolochia ringens Vahl | ARRI3 |
| harlequin dutchman's pipe | Aristolochia anguicida Jacq. | ARAN6 |
| Harper's heartleaf | Hexastylis speciosa Harper | HESP4 |
| Hartweg's wildginger | Asarum hartwegii S. Wats. | ASHA |
| heartleaf | Hexastylis Raf. | HEXAS |
| Hexastylis arifolia var. arifolia | Asarum arifolium Michx. | ASAR10 |
| Hexastylis arifolia var. callifolia | Asarum arifolium Michx. var. callifolia (Small) Barringer | ASARC |
| Hexastylis arifolia var. callifolia | Asarum callifolium Small | ASCA33 |
| Hexastylis arifolia var. ruthii | Asarum arifolium Michx. var. ruthii (Ashe) Barringer | ASARR |
| Hexastylis arifolia var. ruthii | Asarum ruthii Ashe | ASRU8 |
| Hexastylis arifolia var. ruthii | Hexastylis ruthii (Ashe) Small | HERU5 |
| Hexastylis contracta | Asarum contractum (Blomquist) Barringer | ASCO55 |
| Hexastylis heterophylla | Asarum heterophyllum Ashe | ASHE5 |
| Hexastylis lewisii | Asarum lewisii Fern. | ASLE12 |
| Hexastylis minor | Asarum minus Ashe | ASMI11 |
| Hexastylis shuttleworthii var. harperi | Asarum shuttleworthii Britten & Baker var. harperi (Gaddy) Barringer | ASSHH |
| Hexastylis shuttleworthii var. shuttleworthii | Asarum shuttleworthii Britten & Baker | ASSH4 |
| Hexastylis speciosa | Asarum speciosum (Harper) Barringer | ASSP18 |
| Hexastylis virginica | Asarum memmingeri Ashe | ASME10 |
| Hexastylis virginica | Asarum virginicum L. | ASVI8 |
| Hexastylis virginica | Hexastylis memmingeri (Ashe) Small | HEME7 |
| largeflower heartleaf | Hexastylis shuttleworthii (Britten & Baker) Small | HESH2 |
| largeflower heartleaf | Hexastylis shuttleworthii (Britten & Baker) Small var. harperi Gaddy | HESHH |
| largeflower heartleaf | Hexastylis shuttleworthii (Britten & Baker) Small var. shuttleworthii | HESHS |
| Lemmon's wildginger | Asarum lemmonii S. Wats. | ASLE |
| Lewis's heartleaf | Hexastylis lewisii (Fern.) Blomquist & Oosting | HELE2 |
| little heartleaf | Hexastylis minor (Ashe) Blomquist | HEMI13 |
| littlebrownjug | Hexastylis arifolia (Michx.) Small | HEAR6 |
| littlebrownjug | Hexastylis arifolia (Michx.) Small var. arifolia | HEARA |
| littlebrownjug | Hexastylis arifolia (Michx.) Small var. callifolia (Small) Blomquist | HEARC |
| longtail wildginger | Asarum wagneri Lu & Mesler | ASWA6 |
| marbled wildginger | Asarum marmoratum Piper | ASMA8 |
| Marsh's dutchman's pipe | Aristolochia pentandra Jacq. | ARPE8 |
| mottled dutchman's pipe | Aristolochia labiata Willd. | ARLA24 |
| mountain heartleaf | Hexastylis contracta Blomquist | HECO19 |
| North Fork heartleaf | Hexastylis rhombiformis Gaddy | HERH |
| pelicanflower | Aristolochia grandiflora Sw. | ARGR2 |
| peltate dutchman's pipe | Aristolochia peltata L. | ARPE7 |
| pipevine | Aristolochia macrophylla Lam. | ARMA7 |
| Ruth's littlebrownjug | Hexastylis arifolia (Michx.) Small var. ruthii (Ashe) Blomquist | HEARR |
| swanflower | Aristolochia erecta L. | ARER |
| Texas dutchman's pipe | Aristolochia reticulata Jacq. | ARRE3 |
| twolobe dutchman's pipe | Aristolochia bilobata L. | ARBI5 |
| variableleaf heartleaf | Hexastylis heterophylla (Ashe) Small | HEHE12 |
| Virginia heartleaf | Hexastylis virginica (L.) Small | HEVI3 |
| Virginia snakeroot | Aristolochia serpentaria L. | ARSE3 |
| Watson's dutchman's pipe | Aristolochia watsonii Woot. & Standl. | ARWA |
| West Indian dutchman's pipe | Aristolochia bilabiata L. | ARBI4 |
| wildginger | Asarum L. | ASARU |
| woolly dutchman's pipe | Aristolochia tomentosa Sims | ARTO3 |
| Wright's dutchman's pipe | Aristolochia wrightii Seem. | ARWR2 |