Introduction

This field guide to the rare plants of Arizona was prepared by the Arizona Rare Plant Committee, who is grateful to the National Fish and Wildlife Foundation and the Plant Conservation Alliance for matching funds toward the preparation of the guide. For a more detailed introduction, please click the Introduction link, below.

• Introduction
• Definitions and Codes
• Other Potentially Rare Plants in Arizona
• References
• Glossary
• Acknowledgements
• Committee Members

Lists of Rare Plants, by various categories:

• Rare Plants by Common Name
• Rare Plants by Scientific Name
• Rare Plants by Scientific Name with Ranks
• Rare Plants by BLM Office
• Rare Plants by County
• Rare Plants by Navajo Nation
• Rare Plants by National Forest

Detailed pages by Latin name:

• Abutilon parishii: Pima indian mallow, parish indian mallow
• Abutilon thurberi: Indian mallow, thurber indian mallow
• Agave delamateri: Rick's agave, tonto basin agave
• Agave murpheyi: Hohokam agave
• Agave parviflora ssp. parviflora: Santa cruz striped agave
• Agave schottii var. treleasei: Trelease's agave
• Agave sp. nova: Deer creek agave
• Agave x arizonica: Arizona agave
• Allium gooddingii: Goodding's onion, goodding onion
• Amoreuxia gonzalezii: Saiya, zaiya, temaqui
• Amsonia grandiflora: Large-flowered blue star
• Amsonia kearneyana: Kearney's blue star, kearney's amsonia
• Amsonia peeblesii: Peebles blue star
• Arabis tricornuta: Chiricahua rock cress
• Arctomecon californica: California bearpoppy, las vegas bearpoppy
• Argemone arizonica: Roaring springs prickly poppy
• Asclepias welshii: Welsh's milkweed
• Asplenium dalhousiae: Dalhouse spleenwort
• Aster potosinus: Lemmon's aster
• Astragalus beathii: Beath milkvetch
• Astragalus cobrensis var. maguirei: Coppermine milkvetch
• Astragalus cremnophylax var. cremnophylax: Sentry milkvetch
• Astragalus cremnophylax var. hevronii: Marble canyon milkvetch
• Astragalus cremnophylax var. myriorrhaphis: Cliff milkvetch
• Astragalus holmgreniorum: Holmgren milkvetch, holmgrens' milkvetch
• Astragalus hypoxylus: Huachuca milkvetch
• Astragalus newberryi var. aquarii: Aquarius milkvetch
• Astragalus nutriosensis: Nutrioso milkvetch
• Astragalus rusbyi: Rusby milkvetch, rusby's milkvetch
• Astragalus sophoroides: Painted desert milkvetch
• Astragalus toanus var. scidulus: Diamond butte milkvetch, toana milkvetch
• Astragalus xiphoides: Gladiator milkvetch
• Berberis harrisoniana: Kofa mountain barberry, kofa barberry
• Browallia eludens: (no common name)
• Camissonia exilis: Slender evening primrose
• Camissonia specuicola ssp. specuicola: (no common name)
• Carex specuicola: Navajo sedge
• Carex spissa var. ultra: Arizona giant sedge
• Castilleja kaibabensis: Kaibab paintbrush
• Castilleja mogollonica: Mogollon paintbrush, white mountains paintbrush
• Choisya mollis: Santa cruz star-leaf, zorillo
• Cimicifuga arizonica: Arizona bugbane
• Cirsium parryi ssp. mogollonicum: Mogollon thistle
• Cirsium virginense: Virgin thistle
• Cirsium wrightii: Wright's thistle, wright's marsh thistle
• Clematis hirsutissima var. hirsutissima: Arizona leather flower, clustered leather flower
• Cleome multicaulis: Playa spider-plant
• Coryphantha recurvata: Santa cruz beehive cactus
• Coryphantha robbinsiorum: Cochise pincushion cactus
• Coryphantha scheeri var. robustispina: Pima pineapple cactus, scheer's strong-spined cory cactus
• Coursetia glabella: (no common name)
• Croton wigginsii: Wiggin's croton, dune croton
• Cryptantha ganderi: Dune cryptantha, gander's cryptantha
• Cycladenia humilis var. jonesii: Jones cyclad, jone's cycladenia
• Dalea tentaculoides: Gentry indigo bush
• Echinocactus horizonthalonius var. nicholii: Nichol turk's head cactus
• Echinocereus triglochidiatus var. arizonicus: Arizona hedgehog cactus
• Echinomastus erectocentrus var. acuñensis: Acuña cactus
• Echinomastus erectocentrus var. erectocentrus: Needle-spined pineapple cactus
• Erigeron anchana: Sierra ancha fleabane, mogollon fleabane
• Erigeron heliographis: Pinaleno fleabane, pinalenos fleabane
• Erigeron kuschei: Chiricahua fleabane, winn falls fleabane
• Erigeron lemmonii: Lemmon fleabane
• Erigeron piscaticus: Fish creek fleabane
• Erigeron rhizomatus: Zuni fleabane, rhizome fleabane
• Erigeron sivinskii: Sivinski's fleabane
• Eriogonum apachense: Apache wild buckwheat
• Eriogonum ericifolium var. ericifolium: Heathleaf wild buckwheat
• Eriogonum mortonianum: Morton wild buckwheat
• Eriogonum ripleyi: Ripley's wild buckwheat, frazier's wells wild buckwheat
• Eriogonum thompsonae var. atwoodii: Atwood wild buckwheat
• Eriogonum viscidulum: Sticky buckwheat, sticky wild buckwheat
• Errazurizia rotundata: Round dune-broom, roundleaf errazurizia
• Euphorbia aaron-rossii: Ross spurge
• Euphorbia platysperma: Dune spurge, flat-seeded spurge
• Flaveria mcdougallii: Grand canyon flaveria
• Gentianella wislizenii: Wislizeni gentian
• Graptopetalum bartramii: Bartram stonecrop
• Hedeoma diffusum: Flagstaff pennyroyal
• Heterotheca rutteri: Rutter's golden aster, huachuca golden aster
• Hexalectris warnockii: Purple-spike coralroot, texas purple-spike
• Hieracium pringlei: Pringle hawkweed
• Hieracium rusbyi: Rusby hawkweed
• Laennecia eriophylla: Woolly fleabane
• Lesquerella kaibabensis: Kaibab bladderpod
• Lilaeopsis schaffneriana var. recurva: Huachuca water umbel
• Lilium parryi: Lemon lily
• Lotus mearnsii var. equisolensis: Horseshoe deer vetch
• Lupinus huachucanus: Huachuca mountain lupine
• Macroptilium supinum: Supine bean
• Malaxis porphyrea: (no common name)
• Manihot davisiae: Arizona manihot
• Metastelma mexicanum: Wiggins milkweed vine
• Muhlenbergia dubioides: Box canyon muhly
• Muhlenbergia xerophila: Weeping muhly
• Panicum mohavense: Mojave panicum
• Pectis imberbis: Beardless chinch weed
• Pediocactus bradyi: Brady pincushion cactus
• Pediocactus paradinei: Paradine plains cactus, kaibab pincushion cactus
• Pediocactus peeblesianus var. fickeiseniae: Fickeisen plains cactus, fickeisen pincushion cactus
• Pediocactus peeblesianus var. peeblesianus: Navajo plains cactus, peebles navajo cactus
• Pediocactus sileri: Siler pincushion cactus
• Penstemon albomarginatus: White-margined penstemon
• Penstemon discolor: Catalina beardtongue
• Penstemon distans: Mt.trumbull beardtongue
• Penstemon petiolatus: Crevice penstemon, sheep range beardtongue
• Perityle ajoensis: Ajo rock daisy
• Perityle cochisensis: Chiricahua rock daisy
• Perityle saxicola: Fish creek rock daisy
• Phacelia parishii: Parish scorpionweed, parish's phacelia
• Phacelia welshii: Welsh's phacelia
• Phlox cluteana: Navajo phlox
• Pholisma arenarium: Scaly sandplant
• Pholisma sonorae: Sand food
• Platanthera zothecina: Alcove bog orchid
• Psorothamnus arborescens var. pubescens: Marble canyon dalea, mohave indigo bush
• Puccinellia parishii: Parish's alkali grass
• Purshia subintegra: Arizona cliffrose, kearney cliffrose, burro creek cliffrose
• Rhus kearneyi ssp. kearneyi: Kearney sumac
• Rosa stellata ssp. abyssa: Grand canyon rose
• Rumex orthoneurus: Chiricahua or blumer's dock
• Salix arizonica: Arizona willow
• Salvia amissa: Galiuro sage, aravaipa sage
• Salvia dorrii ssp. mearnsii: Mearns sage, verde valley sage
• Sclerocactus sileri: House rock fishhook
• Senecio franciscanus: San francisco peaks groundsel, san francisco groundsel
• Senecio huachucanus: Huachuca groundsel
• Senecio quaerens: Gila groundsel
• Silene rectiramea: Grand canyon catchfly
• Spiranthes delitescens: Canelo hills ladies' tresses orchid, madrean ladies' tresses
• Stellaria porsildii: Porsild's starwort
• Stephanomeria schottii: Schott wire-lettuce
• Talinum humile: Pinos altos flame flower
• Talinum marginatum: Tepic flame flower
• Talinum validulum: Tusayan flame flower
• Townsendia smithii: Black rock daisy, black rock ground daisy
• Tricardia watsonii: Three-heart
• Trifolium neurophyllum: White mountain clover, mogollon clover
• Triteleiopsis palmeri: Blue sand-lily
• Tumamoca macdouglii: Tumamoca globeberry
• Vauquelinia californica ssp. sonorensis: Sonoran mountain rosewood

Detailed pages by common name:

• Acuña cactus: Echinomastus erectocentrus var. acuñensis
• Ajo rock daisy: Perityle ajoensis
• Alcove bog orchid: Platanthera zothecina
• Apache wild buckwheat: Eriogonum apachense
• Aquarius milkvetch: Astragalus newberryi var. aquarii
• Aravaipa sage: Salvia amissa
• Arizona agave: Agave x arizonica
• Arizona bugbane: Cimicifuga arizonica
• Arizona cliffrose: Purshia subintegra
• Arizona giant sedge: Carex spissa var. ultra
• Arizona hedgehog cactus: Echinocereus triglochidiatus var. arizonicus
• Arizona leather flower: Clematis hirsutissima var. hirsutissima
• Arizona manihot: Manihot davisiae
• Arizona willow: Salix arizonica
• Atwood wild buckwheat: Eriogonum thompsonae var. atwoodii
• Bartram stonecrop: Graptopetalum bartramii
• Beardless chinch weed: Pectis imberbis
• Beath milkvetch: Astragalus beathii
• Black rock daisy: Townsendia smithii
• Black rock ground daisy: Townsendia smithii
• Blue sand-lily: Triteleiopsis palmeri
• Box canyon muhly: Muhlenbergia dubioides
• Brady pincushion cactus: Pediocactus bradyi
• Burro creek cliffrose: Purshia subintegra
• California bearpoppy: Arctomecon californica
• Canelo hills ladies' tresses orchid: Spiranthes delitescens
• Catalina beardtongue: Penstemon discolor
• Chiricahua fleabane: Erigeron kuschei
• Chiricahua or blumer's dock: Rumex orthoneurus
• Chiricahua rock cress: Arabis tricornuta
• Chiricahua rock daisy: Perityle cochisensis
• Cliff milkvetch: Astragalus cremnophylax var. myriorrhaphis
• Clustered leather flower: Clematis hirsutissima var. hirsutissima
• Cochise pincushion cactus: Coryphantha robbinsiorum
• Coppermine milkvetch: Astragalus cobrensis var. maguirei
• Crevice penstemon: Penstemon petiolatus
• Dalhouse spleenwort: Asplenium dalhousiae
• Deer creek agave: Agave sp. nova
• Diamond butte milkvetch: Astragalus toanus var. scidulus
• Dune croton: Croton wigginsii
• Dune cryptantha: Cryptantha ganderi
• Dune spurge: Euphorbia platysperma
• Fickeisen pincushion cactus: Pediocactus peeblesianus var. fickeiseniae
• Fickeisen plains cactus: Pediocactus peeblesianus var. fickeiseniae
• Fish creek fleabane: Erigeron piscaticus
• Fish creek rock daisy: Perityle saxicola
• Flagstaff pennyroyal: Hedeoma diffusum
• Flat-seeded spurge: Euphorbia platysperma
• Frazier's wells wild buckwheat: Eriogonum ripleyi
• Galiuro sage: Salvia amissa
• Gander's cryptantha: Cryptantha ganderi
• Gentry indigo bush: Dalea tentaculoides
• Gila groundsel: Senecio quaerens
• Gladiator milkvetch: Astragalus xiphoides
• Goodding onion: Allium gooddingii
• Goodding's onion: Allium gooddingii
• Grand canyon catchfly: Silene rectiramea
• Grand canyon flaveria: Flaveria mcdougallii
• Grand canyon rose: Rosa stellata ssp. abyssa
• Heathleaf wild buckwheat: Eriogonum ericifolium var. ericifolium
• Hohokam agave: Agave murpheyi
• Holmgren milkvetch: Astragalus holmgreniorum
• Holmgrens' milkvetch: Astragalus holmgreniorum
• Horseshoe deer vetch: Lotus mearnsii var. equisolensis
• House rock fishhook: Sclerocactus sileri
• Huachuca golden aster: Heterotheca rutteri
• Huachuca groundsel: Senecio huachucanus
• Huachuca milkvetch: Astragalus hypoxylus
• Huachuca mountain lupine: Lupinus huachucanus
• Huachuca water umbel: Lilaeopsis schaffneriana var. recurva
• Indian mallow: Abutilon thurberi
• Jone's cycladenia: Cycladenia humilis var. jonesii
• Jones cyclad: Cycladenia humilis var. jonesii
• Kaibab bladderpod: Lesquerella kaibabensis
• Kaibab paintbrush: Castilleja kaibabensis
• Kaibab pincushion cactus: Pediocactus paradinei
• Kearney cliffrose: Purshia subintegra
• Kearney sumac: Rhus kearneyi ssp. kearneyi
• Kearney's amsonia: Amsonia kearneyana
• Kearney's blue star: Amsonia kearneyana
• Kofa barberry: Berberis harrisoniana
• Kofa mountain barberry: Berberis harrisoniana
• Large-flowered blue star: Amsonia grandiflora
• Las vegas bearpoppy: Arctomecon californica
• Lemmon fleabane: Erigeron lemmonii
• Lemmon's aster: Aster potosinus
• Lemon lily: Lilium parryi
• Madrean ladies' tresses: Spiranthes delitescens
• Marble canyon dalea: Psorothamnus arborescens var. pubescens
• Marble canyon milkvetch: Astragalus cremnophylax var. hevronii
• Mearns sage: Salvia dorrii ssp. mearnsii
• Mogollon clover: Trifolium neurophyllum
• Mogollon fleabane: Erigeron anchana
• Mogollon paintbrush: Castilleja mogollonica
• Mogollon thistle: Cirsium parryi ssp. mogollonicum
• Mohave indigo bush: Psorothamnus arborescens var. pubescens
• Mojave panicum: Panicum mohavense
• Morton wild buckwheat: Eriogonum mortonianum
• Mt.trumbull beardtongue: Penstemon distans
• Navajo phlox: Phlox cluteana
• Navajo plains cactus: Pediocactus peeblesianus var. peeblesianus
• Navajo sedge: Carex specuicola
• Needle-spined pineapple cactus: Echinomastus erectocentrus var. erectocentrus
• Nichol turk's head cactus: Echinocactus horizonthalonius var. nicholii
• Nutrioso milkvetch: Astragalus nutriosensis
• Painted desert milkvetch: Astragalus sophoroides
• Paradine plains cactus: Pediocactus paradinei
• Parish indian mallow: Abutilon parishii
• Parish scorpionweed: Phacelia parishii
• Parish's alkali grass: Puccinellia parishii
• Parish's phacelia: Phacelia parishii
• Peebles blue star: Amsonia peeblesii
• Peebles navajo cactus: Pediocactus peeblesianus var. peeblesianus
• Pima indian mallow: Abutilon parishii
• Pima pineapple cactus: Coryphantha scheeri var. robustispina
• Pinaleno fleabane: Erigeron heliographis
• Pinalenos fleabane: Erigeron heliographis
• Pinos altos flame flower: Talinum humile
• Playa spider-plant: Cleome multicaulis
• Porsild's starwort: Stellaria porsildii
• Pringle hawkweed: Hieracium pringlei
• Purple-spike coralroot: Hexalectris warnockii
• Rhizome fleabane: Erigeron rhizomatus
• Rick's agave: Agave delamateri
• Ripley's wild buckwheat: Eriogonum ripleyi
• Roaring springs prickly poppy: Argemone arizonica
• Ross spurge: Euphorbia aaron-rossii
• Round dune-broom: Errazurizia rotundata
• Roundleaf errazurizia: Errazurizia rotundata
• Rusby hawkweed: Hieracium rusbyi
• Rusby milkvetch: Astragalus rusbyi
• Rusby's milkvetch: Astragalus rusbyi
• Rutter's golden aster: Heterotheca rutteri
• Saiya: Amoreuxia gonzalezii
• San francisco groundsel: Senecio franciscanus
• San francisco peaks groundsel: Senecio franciscanus
• Sand food: Pholisma sonorae
• Santa cruz beehive cactus: Coryphantha recurvata
• Santa cruz star-leaf: Choisya mollis
• Santa cruz striped agave: Agave parviflora ssp. parviflora
• Scaly sandplant: Pholisma arenarium
• Scheer's strong-spined cory cactus: Coryphantha scheeri var. robustispina
• Schott wire-lettuce: Stephanomeria schottii
• Sentry milkvetch: Astragalus cremnophylax var. cremnophylax
• Sheep range beardtongue: Penstemon petiolatus
• Sierra ancha fleabane: Erigeron anchana
• Siler pincushion cactus: Pediocactus sileri
• Sivinski's fleabane: Erigeron sivinskii
• Slender evening primrose: Camissonia exilis
• Sonoran mountain rosewood: Vauquelinia californica ssp. sonorensis
• Sticky buckwheat: Eriogonum viscidulum
• Sticky wild buckwheat: Eriogonum viscidulum
• Supine bean: Macroptilium supinum
• Temaqui: Amoreuxia gonzalezii
• Tepic flame flower: Talinum marginatum
• Texas purple-spike: Hexalectris warnockii
• Three-heart: Tricardia watsonii
• Thurber indian mallow: Abutilon thurberi
• Toana milkvetch: Astragalus toanus var. scidulus
• Tonto basin agave: Agave delamateri
• Trelease's agave: Agave schottii var. treleasei
• Tumamoca globeberry: Tumamoca macdouglii
• Tusayan flame flower: Talinum validulum
• Verde valley sage: Salvia dorrii ssp. mearnsii
• Virgin thistle: Cirsium virginense
• Weeping muhly: Muhlenbergia xerophila
• Welsh's milkweed: Asclepias welshii
• Welsh's phacelia: Phacelia welshii
• White mountain clover: Trifolium neurophyllum
• White mountains paintbrush: Castilleja mogollonica
• White-margined penstemon: Penstemon albomarginatus
• Wiggin's croton: Croton wigginsii
• Wiggins milkweed vine: Metastelma mexicanum
• Winn falls fleabane: Erigeron kuschei
• Wislizeni gentian: Gentianella wislizenii
• Woolly fleabane: Laennecia eriophylla
• Wright's marsh thistle: Cirsium wrightii
• Wright's thistle: Cirsium wrightii
• Zaiya: Amoreuxia gonzalezii
• Zorillo: Choisya mollis
• Zuni fleabane: Erigeron rhizomatus