| | |
| AMARANTHACEAE |
| | Atriplex confertifolia (Torr. & Frémont) S.Watson |
| | Krascheninnikovia lanata (Pursh) A.Meeuse & A.Smit |
| ANACAMPSEROTACEAE |
| | Anacampseros coahuilensis (S.Watson) Eggli & Nyffeler |
| APIACEAE |
| | Cymopterus fendleri A.Gray |
| | Cymopterus hallii (A.Gray) B.L.Turner |
| | Cymopterus lemmonii (J.M.Coult. & Rose) Dorn |
| | Musineon tenuifolium Nutt. |
| APOCYNACEAE |
| | Amsonia arenaria Standl. trib. Vinceae |
| ASTERACEAE |
| | Antennaria marginata Greene trib. Gnaphalieae |
| | Antennaria parvifolia Nutt. trib. Gnaphalieae |
| | Arnicastrum glandulosum Greenm. trib. Helenieae |
| | Artemisia carruthii Alph.Wood ex J.H.Carruth trib. Anthemideae |
| | Brickellia parvula A.Gray trib. Eupatorieae |
| | Ericameria laricifolia (A.Gray) Shinners trib. Astereae |
| | Erigeron canus A.Gray trib. Astereae |
| | Erigeron flagellaris A.Gray trib. Astereae |
| | Erigeron karvinskianus DC. trib. Astereae |
| | Eutetras palmeri A.Gray trib. Heliantheae |
| | Eutetras pringlei Greenm. trib. Heliantheae |
| | Gaillardia comosa A.Gray trib. Heliantheae |
| | Gaillardia multiceps Greene trib. Heliantheae |
| | Gaillardia pinnatifida Torr. trib. Heliantheae |
| | Gutierrezia sarothrae (Pursh) Britton & Rusby trib. Astereae |
| | Heterotheca hirsutissima (Greene) G.L.Nesom trib. Astereae |
| | Heterotheca viscida (A.Gray) V.L.Harms trib. Astereae |
| | Chaetopappa ericoides (Torr.) G.L.Nesom trib. Astereae |
| | Chaetopappa parryi A.Gray trib. Astereae |
| | Chrysactinia acerosa S.F.Blake trib. Tageteae |
| | Chrysactinia mexicana A.Gray trib. Tageteae |
| | Chrysactinia truncata S.Watson trib. Tageteae |
| | Laphamia aglossa (A.Gray) Benth. & Hook.f. ex Hemsl. trib. Heliantheae |
| | Laphamia bisetosa Torr. trib. Heliantheae |
| | Laphamia dissecta Torr. trib. Heliantheae |
| | Laphamia lemmonii A.Gray trib. Heliantheae |
| | Laphamia parryi (A.Gray) Benth. & Hook.f. ex Hemsl. trib. Heliantheae |
| | Leucactinia bracteata (S.Watson) Rydb. trib. Tageteae |
| | Leucosyris blepharophylla (A.Gray) Pruski & R.L.Hartm. trib. Astereae |
| | Liatris punctata Hook. trib. Eupatorieae |
| | Melampodium cinereum DC. trib. Heliantheae |
| | Melampodium leucanthum Torr. & A.Gray trib. Heliantheae |
| | Packera actinella (Greene) W.A.Weber & Á.Löve trib. Senecioneae |
| | Pectis latisquama Sch.Bip. ex Greenm. trib. Tageteae |
| | Pectis longipes A.Gray trib. Tageteae |
| | Pectis repens Brandegee trib. Tageteae |
| | Pectis saturejoides (Mill.) Sch.Bip. trib. Tageteae |
| | Pectis stenophylla A.Gray trib. Tageteae |
| | Perityle coronopifolia A.Gray trib. Heliantheae |
| | Perityle hofmeisteria Rydb. trib. Heliantheae |
| | Perityle huecoensis A.M.Powell trib. Heliantheae |
| | Perityle jaliscana A.Gray trib. Heliantheae |
| | Perityle lineariloba Rydb. trib. Heliantheae |
| | Perityle rosei Greenm. trib. Heliantheae |
| | Picradeniopsis absinthifolia (Benth.) B.G.Baldwin trib. Helenieae |
| | Picradeniopsis pringlei (Greenm.) B.G.Baldwin trib. Helenieae |
| | Picradeniopsis xylopoda (Greenm.) B.G.Baldwin trib. Helenieae |
| | Pinaropappus mojadanus B.L.Turner trib. Cichorieae |
| | Pinaropappus parvus S.F.Blake trib. Cichorieae |
| | Pinaropappus pattersonii B.L.Turner trib. Cichorieae |
| | Pinaropappus pooleanus B.L.Turner trib. Cichorieae |
| | Pinaropappus powellii B.L.Turner trib. Cichorieae |
| | Pinaropappus roseus (Less.) Less. trib. Cichorieae |
| | Plateilema palmeri Cockerell trib. Helenieae |
| | Porophyllum greggii A.Gray trib. Tageteae |
| | Psathyrotopsis purpusii Rydb. |
| | Psilostrophe tagetina (Nutt.) Greene trib. Helenieae |
| | Sartwellia flaveriae A.Gray trib. Helenieae |
| | Symphyotrichum potosinum (A.Gray) G.L.Nesom trib. Astereae |
| | Tetraneuris scaposa (DC.) Greene trib. Helenieae |
| | Thymophylla acerosa (DC.) Strother |
| | Thymophylla greggii A.Gray |
| | Thymophylla micropoides (DC.) Strother |
| | Thymophylla setifolia Lag. |
| | Townsendia exscapa (Richardson) Porter trib. Astereae |
| | Verbesina nana B.L.Rob. & Greenm. trib. Heliantheae |
| | Zinnia acerosa (DC.) A.Gray trib. Heliantheae |
| | Zinnia anomala A.Gray trib. Heliantheae |
| | Zinnia grandiflora Nutt. trib. Heliantheae |
| | |
| BORAGINACEAE |
| | Lithospermum incisum Lehm. |
| | Lithospermum mirabile Small |
| | Mimophytum mexicanum (S.Watson) R.R.Mill ex Holstein & Weigen |
| | Nama xylopoda (Wooton & Standl.) C.L.Hitchc. |
| | Oreocarya suffruticosa (Torr.) Greene |
| | Phacelia secunda J.F.Gmel. |
| | Tiquilia canescens (DC.) A.T.Richardson |
| | Tiquilia hispidissima (Torr. & A.Gray) A.T.Richardson |
| BRASSICACEAE |
| | Boechera fendleri (S.Watson) W.A.Weber |
| | Boechera perennans (S.Watson) W.A.Weber |
| | Cardamine breweri S.Watson |
| | Draba hidalgensis Calderón |
| | Draba implexa Rollins |
| | Draba standleyi J.F.Macbr. & Payson |
| | Draba viridis A.Heller |
| | Erysimum amoenum (Greene) Rydb. |
| | Erysimum capitatum (Douglas) Greene |
| | Lepidium montanum Nutt. |
| | Nerisyrenia linearifolia (S.Watson) Greene |
| | Noccaea fendleri (A.Gray) Holub |
| | Noccaea glauca (A.Nelson) Holub |
| | Physaria argyraea (A.Gray) O´Kane & Al-Shehbaz |
| | Physaria fendleri (A.Gray) O´Kane & Al-Shehbaz |
| | Physaria mcvaughiana (Rollins) O´Kane & Al-Shehbaz |
| | Physaria purpurea (A.Gray) O´Kane & Al-Shehbaz |
| | |
| CAMPANULACEAE |
| | Lobelia nana Kunth |
| CARYOPHYLLACEAE |
| | Cerastium purpusii Greenm. |
| | Paronychia jamesii Torr. & A.Gray |
| | Paronychia wilkinsonii S.Watson |
| | Silene greggii A.Gray |
| | Silene laciniata Cav. |
| | Silene plankii C.L.Hitchc. & Maguire |
| | Stellaria irrigua Bunge |
| CELASTRACEAE |
| | Parnassia cirrata Piper |
| | Paxistima myrsinites (Pursh) Raf. |
| CISTACEAE |
| | Crocanthemum canadense (L.) Britton |
| CRASSULACEAE |
| | Echeveria affinis E.Walther |
| | Echeveria agavoides Lem. |
| | Echeveria angustifolia E.Walther |
| | Echeveria bifida Schltdl. |
| | Echeveria calderoniae Pérez-Calix |
| | Echeveria canaliculata Hook.f. |
| | Echeveria cante Glass & Mend.-Garc. |
| | Echeveria corderoyi (Baker) É.Morren |
| | Echeveria cuspidata Rose |
| | Echeveria elegans Rose |
| | Echeveria halbingeri E.Walther |
| | Echeveria humilis Rose |
| | Echeveria chihuahuaensis Poelln. |
| | Echeveria kimnachii J.Meyrán & Vega |
| | Echeveria minima J.Meyrán |
| | Echeveria pringlei (S.Watson) Rose |
| | Echeveria pulidonis E.Walther |
| | Echeveria purpusiorum A.Berger |
| | Echeveria rosea Lindl. |
| | Echeveria runyonii Rose |
| | Echeveria sanchez-mejoradae E.Walther |
| | Echeveria secunda Booth ex Lindl. |
| | Echeveria shaviana E.Walther |
| | Echeveria schaffneri (S.Watson) Rose |
| | Echeveria simulans Rose |
| | Echeveria strictiflora A.Gray |
| | Echeveria tenuis Rose |
| | Echeveria tobarensis A.Berger |
| | Echeveria turgida Rose |
| | Echeveria waltheri Moran & J.Meyrán |
| | Graptopetalum amethystinum (Rose) E.Walther |
| | Graptopetalum bartramii Rose |
| | Graptopetalum bellum (Moran & J.Meyrán) D.R.Hunt |
| | Graptopetalum filiferum (S.Watson) Whitehead |
| | Graptopetalum pachyphyllum Rose |
| | Graptopetalum paraguayense (N.E.Br.) E.Walther |
| | Graptopetalum pusillum Rose |
| | Graptopetalum rusbyi (Greene) Rose |
| | Graptopetalum saxifragoides Kimnach |
| | Lenophyllum acutifolium Rose |
| | Lenophyllum guttatum (Rose) Rose |
| | Lenophyllum obtusum Moran |
| | Lenophyllum reflexum S.S.White |
| | Lenophyllum texanum (Donn.Sm.) Rose |
| | Lenophyllum weinbergii Britton |
| | Pachyphytum bracteosum Link, Klotzsch & Otto |
| | Pachyphytum brachetii J.Reyes, O.Gonzáles & A.Gut. |
| | Pachyphytum brevifolium Rose |
| | Pachyphytum caesium Kimnach & R.C.Moran |
| | Pachyphytum compactum Rose |
| | Pachyphytum fittkaui Moran |
| | Pachyphytum garciae Pérez-Calix & Glass |
| | Pachyphytum glutinicaule Moran |
| | Pachyphytum hookeri (Salm-Dyck) A.Berger |
| | Pachyphytum kimnachii Moran |
| | Pachyphytum longifolium Rose |
| | Pachyphytum oviferum J.A.Purpus |
| | Pachyphytum saltensis Brachet, J.Reyes & R.Mondragón |
| | Pachyphytum viride E.Walther |
| | Pachyphytum werdermannii Poelln. |
| | Sedum alamosanum S.Watson |
| | Sedum batallae Barocio |
| | Sedum bellum Rose ex Praeger |
| | Sedum booleanum B.L.Turner |
| | Sedum botterii Hemsl. |
| | Sedum bourgaei Hemsl. |
| | Sedum caducum R.T.Clausen |
| | Sedum calcaratum Rose |
| | Sedum calcicola B.L.Rob. & Greenm. |
| | Sedum carinatifolium (R.T.Clausen) Pérez-Calix |
| | Sedum catorce G.L.Nesom |
| | Sedum clausenii Pérez-Calix |
| | Sedum cockerellii Britton |
| | Sedum confusum Hemsl. sect. Mexicali |
| | Sedum corynephyllum Fröd. |
| | Sedum craigii R.T.Clausen |
| | Sedum dendroideum Moc. & Sessé ex DC. |
| | Sedum diffusum S.Watson sect. Genuina |
| | Sedum diminutum (R.T.Clausen) G.L.Nesom |
| | Sedum dulcinomen G.L.Nesom |
| | Sedum ebracteatum Moc. & Sessé ex DC. sect. Sedastrum |
| | Sedum edwardsii (R.T.Clausen) B.L.Turner |
| | Sedum flaccidum Rose |
| | Sedum furfuraceum Moran |
| | Sedum glabrum (Rose) Praeger sect. Sedastrum |
| | Sedum glassii Pérez-Calix |
| | Sedum globuliflorum R.T.Clausen |
| | Sedum goldmanii (Rose) Moran |
| | Sedum greggii Hemsl. |
| | Sedum griseum Praeger |
| | Sedum guadalajaranum S.Watson |
| | Sedum gypsophilum B.L.Turner |
| | Sedum havardii Rose |
| | Sedum hemsleyanum Rose sect. Sedastrum |
| | Sedum hintonii R.T.Clausen sect. Sedastrum |
| | Sedum hintoniorum B.L.Turner |
| | Sedum hultenii Fröd. |
| | Sedum humifusum Rose sect. Mexicali |
| | Sedum chrysicaulum J.A.McDonald |
| | Sedum jerzedowskii Pérez-Calix |
| | Sedum jurgensenii (Hemsl.) Moran |
| | Sedum kristenii J.Reyes, O.González & Etter |
| | Sedum lahovarianum Raym.-Hamet |
| | Sedum latifilamentum R.T.Clausen |
| | Sedum liebmannianum Hemsl. |
| | Sedum longipes Rose |
| | Sedum luteoviride R.T.Clausen |
| | Sedum macdonaldii G.L.Nesom |
| | Sedum madrense S.Watson |
| | Sedum mellitulum Rose |
| | Sedum mocinoanum Pérez-Calix sect. Sedastrum |
| | Sedum moranense Kunth sect. Mexicali |
| | Sedum nanifolium Fröd. |
| | Sedum oxycoccoides Rose |
| | Sedum pacense J.Meyrán |
| | Sedum palmeri S.Watson sect. Mexicali |
| | Sedum papillicaulum G.L.Nesom |
| | Sedum parvum Hemsl. |
| | Sedum piaxtlaense J.Reyes, Etter & Kristen |
| | Sedum potosinum Rose |
| | Sedum raramuri J.Metzg. |
| | Sedum reptans R.T.Clausen sect. Mexicali |
| | Sedum retusum Hemsl. |
| | Sedum rhodocarpum Rose |
| | Sedum robertsianum Alexander |
| | Sedum semiteres Rose |
| | Sedum sinforosanum J.Reyes & al. |
| | Sedum spathulisepalum R.T.Clausen |
| | Sedum stelliforme S.Watson sect. Mexicali |
| | Sedum suaveolens Kimnach |
| | Sedum tamaulipense G.L.Nesom |
| | Sedum tortuosum Hemsl. |
| | Sedum trichromum R.T.Clausen |
| | Sedum vinicolor S.Watson |
| | Sedum wrightii A.Gray sect. Genuina |
| | Thompsonella minutilflora (Rose) Britton & Rose |
| | Villadia acuta Moran & C.H.Uhl |
| | Villadia aperta Moran & C.H.Uhl |
| | Villadia aristata Moran |
| | Villadia cucullata Rose |
| | Villadia laxa Moran & C.H.Uhl |
| | Villadia painteri Rose |
| | Villadia patula Moran & C.H.Uhl |
| | Villadia pringlei Rose |
| | Villadia squamulosa (S.Watson) Rose |
| | Villadia stricta Rose |
| | |
| ERICACEAE |
| | Arctostaphylos pungens Kunth |
| | Gaultheria myrsinoides Kunth |
| | Chimaphila maculata (L.) Pursh |
| | Chimaphila umbellata (L.) W.P.C.Barton |
| | Orthilia secunda (L.) House |
| | Vaccinium cespitosum Michx. |
| EUPHORBIACEAE |
| | Euphorbia albomarginata Torr. & Gray |
| | Euphorbia astyla Englem. ex Boiss. |
| | Euphorbia brachycera Engelm. |
| | Euphorbia cinerascens Engelm. |
| | Euphorbia fendleri Torr. & A.Gray |
| | Euphorbia chaetocalyx (Boiss.) Tidestr. |
| | Euphorbia jejuna M.C.Johnst. & Warnock |
| | Euphorbia radians Benth. |
| | |
| FABACEAE |
| | Acmispon oroboides (Kunth) Brouillet trib. Loteae |
| | Astragalus amphioxys A.Gray trib. Galegeae |
| | Astragalus bigelovii A.Gray trib. Galegeae |
| | Astragalus cobrensis A.Gray trib. Galegeae |
| | Astragalus coriaceus Hemsl. trib. Galegeae |
| | Astragalus crassicarpus Nutt. |
| | Astragalus diphacus S.Watson trib. Galegeae |
| | Astragalus earlei Greene ex Rydb. trib. Galegeae |
| | Astragalus esperanzae M.E.Jones trib. Galegeae |
| | Astragalus goldmanii M.E.Jones trib. Galegeae |
| | Astragalus helleri Fenzl trib. Galegeae |
| | Astragalus humistratus A.Gray trib. Galegeae |
| | Astragalus hypoleucus S.Schauer trib. Galegeae |
| | Astragalus irolanus (M.E.Jones) Rydb. trib. Galegeae |
| | Astragalus marcidus Greene ex Rydb. trib. Galegeae |
| | Astragalus oxyrhynchus Hemsl. trib. Galegeae |
| | Astragalus parvus Hemsl. trib. Galegeae |
| | Astragalus pringlei S.Watson trib. Galegeae |
| | Astragalus purpusii M.E.Jones trib. Galegeae |
| | Astragalus quinqueflorus S.Watson trib. Galegeae |
| | Astragalus sonorae A.Gray trib. Galegeae |
| | Astragalus tephrodes A.Gray trib. Galegeae |
| | Astragalus tolucanus B.L.Rob. & Seaton trib. Galegeae |
| | Coursetia pumila (Rose) Lavin |
| | Dalea aurea Nutt. ex Pursh trib. Amorpheae |
| | Dalea candida Willd. trib. Amorpheae |
| | Dalea eriophylla S.Watson trib. Amorpheae |
| | Dalea erythrorhiza Greenm. trib. Amorpheae |
| | Dalea formosa Torr. trib. Amorpheae |
| | Dalea greggii A.Gray trib. Amorpheae |
| | Dalea jamesii (Torr.) Torr. & A.Gray trib. Amorpheae |
| | Dalea lachnostachys A.Gray trib. Amorpheae |
| | Dalea lasiathera A.Gray trib. Amorpheae |
| | Dalea longipila (B.L.Rob. ex Rydb.) Cory trib. Amorpheae |
| | Dalea luisana S.Watson trib. Amorpheae |
| | Dalea lumholtzii C.B.Rob. & Fernald trib. Amorpheae |
| | Dalea mollis Benth. trib. Amorpheae |
| | Dalea nana Torr. ex A.Gray trib. Amorpheae |
| | Dalea neomexicana (A.Gray) Cory trib. Amorpheae |
| | Dalea oligophylla (Torr.) Shinners trib. Amorpheae |
| | Dalea pogonathera A.Gray trib. Amorpheae |
| | Dalea radicans S.Watson trib. Amorpheae |
| | Dalea rubescens S.Watson trib. Amorpheae |
| | Dalea wrightii A.Gray trib. Amorpheae |
| | Hoffmannseggia drummondii Torr. & A.Gray trib. Caesalpinieae |
| | Hoffmannseggia glauca (Ortega) Eifert trib. Caesalpinieae |
| | Lathyrus decaphyllus Pursh trib. Vicieae |
| | Lupinus argenteus Pursh trib. Genisteae |
| | Marina calycosa (A.Gray) Barneby trib. Amorpheae |
| | Orbexilum oliganthum (Brandegee) B.L.Turner trib. Psoraleeae |
| | Pediomelum humile Rydb. trib. Psoraleeae |
| | Pediomelum pentaphyllum (L.) Rydb. trib. Psoraleeae |
| | Peteria glandulosa (A.Gray ex S.Watson) Rydb. |
| | Senna pumilio (A.Gray) H.S. Irwin & Barneby trib. Cassieae |
| | Tephrosia watsoniana (Standl.) J.F.Macbr. |
| | Trifolium rusbyi Greene trib. Trifolieae |
| FRANKENIACEAE |
| | Frankenia salina (Molina) I.M.Johnst. |
| | |
| GENTIANACEAE |
| | Gentiana autumnalis L. sect. Pneumonanthe |
| GERANIACEAE |
| | Geranium bellum Rose |
| | Geranium caespitosum E.James |
| | Geranium cruceroense R.Knuth |
| | Geranium potosinum H.E.Moore |
| | Geranium tenue Hanks |
| | Geranium trolliifolium Small |
| | Geranium wislizeni S.Watson |
| | |
| HYPERICACEAE |
| | Hypericum scouleri Hook. sect. Hypericum |
| | |
| LAMIACEAE |
| | Hedeoma nana (Torr.) Briq. |
| | Monarda fistulosa L. |
| | Monarda menthifolia Graham |
| | Salvia summa A.Nelson |
| | Salvia texana (Scheele) Torr. |
| LINACEAE |
| | Linum cruciatum Planch. |
| | Linum elongatum (Small) H.J.P. Winkl. |
| | Linum lewisii Pursh |
| | Linum rupestre Engelm. ex A.Gray |
| | |
| MALVACEAE |
| | Callirhoe involucrata (Torr. & A.Gray) A.Gray |
| | Sphaeralcea coccinea (Nutt.) Rydb. |
| | Sphaeralcea hastulata A.Gray |
| | Sphaeralcea leptophylla (A.Gray) Rydb. |
| | Sphaeralcea pedatifida (A.Gray) A.Gray |
| MONTIACEAE |
| | Calyptridium umbellatum (Torr.) Greene |
| | Claytonia rosea Rydb. |
| | Montia chamissoi (Ledeb. ex Spreng.) Greene |
| | Phemeranthus brevicaulis (S.Watson) Kiger |
| | Phemeranthus calycinus (Engelm.) Kiger |
| | Phemeranthus humilis (Greene) Kiger |
| | Phemeranthus longipes (Wooton & Standl.] Kiger |
| | Phemeranthus mexicanus (Hemsl.) Ocampo |
| | Phemeranthus multiflorus (Rose & Standl.) Ocampo |
| | Phemeranthus napiformis (DC.) Ocampo |
| | Phemeranthus palmeri (Rose & Standl.) D.J.Ferguson |
| | Phemeranthus parviflorus (Nutt.) Kiger |
| | Phemeranthus parvulus (Rose & Standl.) D.J.Ferguson & T.M.Price |
| | |
| NYCTAGINACEAE |
| | Abronia fragrans Nutt. ex Hook. |
| | |
| OLEACEAE |
| | Menodora scabra Engelm. ex A.Gray |
| ONAGRACEAE |
| | Epilobium arizonicum (Davidson) P.M.Sl. |
| | Epilobium glaberrimum Barbey |
| | Epilobium hallianum Hausskn. |
| | Oenothera albicaulis Pursh sect. Anogra |
| | Oenothera berlandieri (Spach) Steud. |
| | Oenothera brachycarpa A.Gray sect. Megapterium |
| | Oenothera deserticola (Loes.) Munz sect. Hartmannia |
| | Oenothera dissecta A.Gray ex S.Watson sect. Leucocoryne |
| | Oenothera fendleri A.Gray sect. Calylophus |
| | Oenothera filifolia (Eastw.) Tidestr. sect. Calylophus |
| | Oenothera flava (A.Nelson) Garrett sect. Lavauxia |
| | Oenothera greggii A.Gray sect. Calylophus |
| | Oenothera hartwegii Benth. sect. Calylophus |
| | Oenothera havardii S.Watson sect. Paradoxus |
| | Oenothera hispida (Benth.) W.L.Wagner & al. |
| | Oenothera kunthiana (Spach) Munz |
| | Oenothera lavandulifolia Torr. & A.Gray sect. Calylophus |
| | Oenothera luciae-julianiae W.L.Wagner sect. Leucocoryne |
| | Oenothera macrocarpa Nutt. sect. Megapterium |
| | Oenothera macrosceles A.Gray sect. Oenothera |
| | Oenothera marginata Nutt. ex Hook. & Arn. sect. Pachylophus |
| | Oenothera maysillesii Munz sect. Oenothera |
| | Oenothera mckelveyae (Munz) W.L.Wagner & Hoch sect. Gaura |
| | Oenothera muelleri Munz sect. Ravenia |
| | Oenothera pallida Lindl. sect. Anogra |
| | Oenothera pennellii Munz sect. Oenothera |
| | Oenothera pringlei (Munz) Munz sect. Calylophus |
| | Oenothera rosea L‘Hér. ex Aiton sect. Hartmannia |
| | Oenothera runcinata (Engelm.) Munz sect. Anogra |
| | Oenothera serrulata Nutt. sect. Calylophus |
| | Oenothera speciosa Nutt. sect. Hartmannia |
| | Oenothera texensis P.H.Raven & D.R.Parn. sect. Hartmannia |
| | Oenothera tubicula A.Gray sect. Calylophus |
| | Oenothera tubifera Ser. sect. Ravenia |
| OROBANCHACEAE |
| | Castilleja integra A.Gray |
| | Castilleja lanata A.Gray |
| OXALIDACEAE |
| | Oxalis alpina (Rose) Rose ex R.Knuth |
| | Oxalis caerulea (Small) R.Knuth |
| | Oxalis decaphylla Kunth |
| | Oxalis drummondii A.Gray |
| | Oxalis hernandesii DC. |
| | Oxalis jacquiniana Kunth |
| | Oxalis lunulata Zucc. |
| | Oxalis metcalfei (Small) R.Knuth |
| | Oxalis tetraphylla Cav. |
| | |
| PHRYMACEAE |
| | Erythranthe geyeri (Torr.) G.L.Nesom |
| | Erythranthe glabrata (Kunth) G.L.Nesom |
| | Erythranthe parvula (Wooton & Standl.) G.L.Nesom |
| PLANTAGINACEAE |
| | Penstemon ambiguus Torr. sect. Ambigui |
| | Penstemon baccharifolius Hook. sect. Baccharifolii |
| | Penstemon brandegeei (Porter) Rydb. sect. Glabri |
| | Penstemon dasyphyllus A.Gray sect. Chamaeleon |
| | Penstemon fendleri Torr. & A.Gray sect. Coerulei |
| | Penstemon jamesii Benth. sect. Cristati |
| | Penstemon neomexicanus Wooton & Standl. sect. Glabri |
| | Penstemon parryi (A.Gray) A.Gray sect. Gentianoides |
| | Penstemon pinifolius Greene sect. Caespitosi |
| | Penstemon roseus (Cerv. ex Sweet) G.Don sect. Campanulati |
| | Penstemon secundiflorus Benth. sect. Coerulei |
| | Penstemon superbus A.Nelson sect. Gentianoides |
| | Penstemon thurberi Torr. sect. Ambigui |
| | Penstemon triflorus A.Heller sect. Cristati |
| | Penstemon virgatus A.Gray sect. Glabri |
| | Plantago caulescens S.Watson trib. Plantaginae |
| | Sibthorpia repens (Mutis ex L.) Kuntze trib. Sibthorpieae |
| | Veronica plantaginea E.James subgen. Synthyris |
| POLEMONIACEAE |
| | Giliastrum acerosum (A.Gray) Rydb. |
| | Giliastrum rigidulum (Benth.) Rydb. |
| | Ipomopsis longiflora (Torr.) V.E.Grant |
| | Phlox nana Nutt. Protophlox, Nanae |
| | Phlox pilosa L. Protophlox, Divaricatae |
| | Polemonium glabrum J.F.Davidson |
| | Polemonium grandiflorum Benth. |
| | Polemonium pauciflorum S.Watson |
| POLYGALACEAE |
| | Hebecarpa americana (Mill.) J.R.I.Wood & S.Beck |
| | Hebecarpa barbeyana (Chodat) J.R.Abbott |
| | Hebecarpa buxifolia (Kunth) J.R.Abbott & J..F.B.Pastore |
| | Hebecarpa macradenia (A.Gray) J.R.Abbott |
| | Hebecarpa myrtilloides (Willd.) J.R.Abbott & J.F.B.Pastore |
| | Hebecarpa obscura (Benth.) J.R.Abbott |
| | Hebecarpa ovatifolia (A.Gray) J.R.Abbott |
| | Hebecarpa palmeri (S.Watson) J.R.Abbott |
| | Hebecarpa punctata (Humb. ex Schult.) J.R.Abbott & J.Pastore |
| | Hebecarpa rectipilis (S.F.Blake) J.R.Abbott |
| | Polygala amphothrix S.F.Blake |
| | Polygala brachyanthema S.F.Blake |
| | Polygala brachytropis S.F.Blake |
| | Polygala brandegeeana Chodat |
| | Polygala compacta Rose |
| | Polygala microtricha S.F.Blake |
| | Polygala neurocarpa Brandegee |
| | Polygala parrasana Brandegee |
| | Polygala phoenicistes S.F.Blake |
| | Rhinotropis eucosma (S.F.Blake) P.M.Sl. |
| | Rhinotropis lindheimeri (A.Gray) J.R.Abbott |
| | Rhinotropis maravillasensis (Correll) J.R.Abbott |
| | Rhinotropis minutifolia (Rose) J.R.Abbott |
| | Rhinotropis nitida (Brandegee) J..R.Abbott |
| | Rhinotropis parryi (A.W.Benn.) J.R.Abbott |
| | Rhinotropis parvifolia (Wheelock) P.M.Sl. |
| | Rhinotropis purpusii (Brandegee) J.R.Abbott |
| | Rhinotropis tamaulipana (T.Wendt) P.M.Sl. |
| | Senega alba (Nutt.) J.F.B.Pastore & J.R.Abboott |
| | Senega hemipterocarpa (A.Gray) J.F.B.Pastore & J.R.Abbott |
| | Senega mexicana (Moc. ex Cav.) J.F.B.Pastore & J.R.Abbott |
| | Senega scoparioides (Chodat) J.F.B.Pastore & J.R.Abbott |
| | Senega semialata (S.Watson) J.F.B.Pastore & J.R.Abbott |
| | Senega viridis (S.Watson) J.F.B.Pastore & J.R.Abbott |
| | Senega watsonii (Chodat) J.F.B.Pastore & J.R.Abbott |
| POLYGONACEAE |
| | Eriogonum lonchophyllum Torr. & A.Gray sect. Eucycla |
| | Eriogonum undulatum Benth. sect. Oligogonum |
| | Eriogonum wrightii Torr. ex Benth. sect. Eucycla |
| PRIMULACEAE |
| | Primula pauciflora (Durand) A.R.Mast & Reveal sect. Dodecatheon |
| | Primula rusbyi Greene sect. Parryi |
| | Primula standleyana A.R.Mast & Reveal sect. Dodecatheon |
| | Samolus cinerascens (B.L.Rob.) Pax & Knuth |
| | |
| RANUNCULACEAE |
| | Anemone berlandieri Pritz. |
| | Anemone tuberosa Rydb. |
| | Aquilegia canadensis L. |
| | Aquilegia elegantula Greene |
| | Aquilegia formosa Fisch. ex DC. |
| | Aquilegia hypolasia Greene |
| | Aquilegia chrysantha A.Gray |
| | Aquilegia longissima A.Gray ex S.Watson |
| | Knowltonia mexicana (Kunth) Christenh. & Byng |
| | Ranunculus fasciculatus Sessé & Moc. |
| | Ranunculus peruvianus Pers. |
| RHAMNACEAE |
| | Ceanothus fendleri A.Gray |
| ROSACEAE |
| | Fallugia paradoxa (D.Don ex Tilloch) Endl. ex Torr. |
| | Petrophytum caespitosum (Nutt.) Rydb. |
| | Potentilla concinna Richardson |
| | Potentilla durangensis Rydb. |
| | Potentilla haematochrus Lehm. |
| | Potentilla horrida Rydb. |
| | Potentilla leonina Standl. |
| | Potentilla ranunculoides Humb. & Bonpl. ex Nestl. |
| | Potentilla rubra Willd. ex D.F.K.Schltdl. |
| | Potentilla staminea Rydb. |
| | Potentilla thurberi A.Gray ex Lehm. |
| RUBIACEAE |
| | Houstonia rubra Cav. |
| | Houstonia wrightii A.Gray |
| | Mitchella repens L. |
| | |
| SAXIFRAGACEAE |
| | Heuchera longipetala Moc. ex Ser. |
| | Heuchera mexicana J.H.Schaffn. |
| | Heuchera orizabensis Hemsl. |
| | Heuchera parvifolia Nutt. |
| | Heuchera rubescens Torr. |
| | Heuchera sanguinea Engelm. |
| | Micranthes eriophora (S.Watson) Small sect. Dermasea |
| | |
| TALINACEAE |
| | Talinum lineare Kunth |
| | |
| VERBENACEAE |
| | Phyla cuneifolia (Torr.) Greene |
| | Phyla lanceolata (Michx.) Greene |
| | Verbena bipinnatifida Schauer |
| VIOLACEAE |
| | Viola adunca Sm. sect. Viola |
| | Viola nephrophylla Greene sect. Viola |
| | Viola sororia Willd. sect. Viola |
| | Viola umbraticola Kunth |