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Species Considered, but not listed A-C

[A-B] [C] [D-E] [F-K] [L-N] [O-P] [Q-S] [T-Z]

Abronia bolackii
Abutilon mollicomum
Abutilon sonorae (Malvaceae) - This name is synonymous with Abutilon mollicomum.
Abutilon wrightii (Malvaceae) - This species has a very broad distribution from New Mexico through parts of southern and western Texas south to San Luis Potosi. Populations of this species are peripheral in New Mexico.
Acacia angustissima (Fabaceae) - This is a relatively common tall grass prairie species, synonymous with Acacia angustissima var. hirta, a species with a range of Missouri, Kansas, south to Texas, Mexico and central America, and disjunct east to Florida. New Mexico is on the periphery of this species' range, but otherwise it is relatively widespread and common.
Acacia millefolia
Acer grandidentatum (Aceraceae) - The range for variety grandidentatum is in Montana and Idaho to Texas, New Mexico, Arizona, and Mexico. In these places, it is localized, but common where found. Therefore, neither the species Acer grandidentatum nor either of its varieties that occur in New Mexico appear to meet our criteria as rare plants.
Achillea millefolium var. occidentalis (Asteraceae) - This variety needs further taxonomic study.
Adenophyllum wrightii var. wrightii
Adoxa moschatellina (Adoxaceae) - Populations of this species are circumboreal yet peripheral in New Mexico.
Agastache mearnsii
Agastache micrantha
Agastache pallidiflora ssp. harvardii (Lamiaceae) - Richard Worthington reported this taxon as new to New Mexico at the New Mexico Rare Plants meeting on March 12, 2001. Subsequent investigation indicated the taxon has too broad a range in Texas and Mexico to meet our definition of rare.
Agastache rupestris
Agastache wrightii
Agave palmeri (Agavaceae) - The distribution of this species includes southern Arizona, northern Mexico, and peripheral populations in New Mexico.
Ageratum corymbosum (Asteraceae) - The distribution of populations of this species is peripheral in New Mexico.
Aletes filifolius
Aletes sessiliflorus (Apiaceae) - This name is synonymous with Cymopterus sessiliflorus.
Allium gooddingii (Liliaceae) - Populations of this species are sparse yet widespread and locally abundant in western New Mexico and eastern Arizona.
Amelanchier australis (Rosaceae) - This name is synonymous with A. utahensis, a relatively common species.
Amsonia arenaria (Apocyanaceae) - Populations of this species are relatively common in southern New Mexico, west Texas, southeast Arizona, and Chihuahua, Mexico.
Amsonia longiflora (Apocyanaceae) - Populations of this species are relatively common in southern New Mexico and west Texas.
Anisacanthus thurberi (Acanthaceae) - Populations of this species are relatively common across southern Arizona and adjacent Mexico.
Apacheria chiricahuensis
Aquilegia chrysantha var. rydbergii
Aquilegia desertorum
Arabis lignifera (Brassicaceae) - Populations of this species are relatively common in New Mexico.
Arabis porphyrea (Brassicaceae) - The taxonomic distinctness is questionable, as this name may be synonymous with Arabis fendleri.
Arabis selbyi
Arbutus arizonica (Ericaceae) - Populations of this species are relatively very common.
Arctostaphylos uva-ursi (Ericaceae) - Populations have a widespread distribution and are relatively very common.
Argemone aenea (Papaveraceae) - Populations of this species are peripheral in New Mexico.
Aristolochia watsonii (Aristolochiaceae) - The relatively widespread distribution of this species ranges from southern New Mexico, Trans-Pecos Texas, to Chihuahua and Coahuila, Mexico.
Artemisia pygmaea
Arundo donax (Poaceae) - This species was introduced into New Mexico, and subsequently, populations are common along ditches.
Asclepias nummularia (Asclepidaceae) - Populations of this species occur peripherally in New Mexico (localized in the "bootheel" region of the state) and are relatively common in Chihuahua, Mexico.
Asclepias uncialis ssp. ruthiae (Asclepidaceae) - This name may be synonymous with Asclepias uncialis ssp. sanjuanensis.
Asclepias uncialis ssp. uncialis (Asclepidaceae) - The distribution of this taxon is widespread from Wyoming to southwest Arizona.
Aspicarpa hirtella
Asplenium septentrionale (Aspleniaceae) - Populations of this species are sparse, yet widely distributed throughout North America, Europe and Asia.
Aster laevis var. guadalupensis (Asteraceae) - This name is synonymous with Aster laevis var. laevis, a relatively common species.
Astragalus calycosus (Fabaceae) - Populations of this spcies are common in Nevada, Utah, Colorado, New Mexico, and Arizona.
Astragalus cobrensis var. cobrensis (Fabaceae) - Populations of this variety are locally abundant in southwestern New Mexico and southeastern Arizona.
Astragalus desperatus var. desperatus (Fabaceae) - The distribution of this variety is widespread in western Colorado, northeastern Arizona and eastern Utah, yet peripheral in San Juan County of northwestern New Mexico.
Astragalus flavus (Fabaceae) - Populations of this species are relatively common in northwestern New Mexico and northeastern Arizona, and they extend northward into Colorado, Utah and southern Wyoming.
Astragalus fucatus (Fabaceae) - Populations of this species are locally common throughout northwestern New Mexico, into Colorado, Utah and northeastern Arizona.
Astragalus gilensis (Fabaceae) - Populations of this species are locally common in the mountains of southwestern New Mexico and southeastern Arizona.
Astragalus gracilis (Fabaceae) - The distribution of this species is widespread, extending from southern Canada into South Dakota and Montana, and southward into New Mexico to Texas, where it is locally abundant.
Astragalus hallii (Fabaceae) - The distribution of this species is relatively widespread. Populations are found throughout the mountains of north-central, central and south-central Colorado and north-central New Mexico.
Astragalus hallii var. fallax (Fabaceae) - Populations of this taxon are widespread and locally common; populations are found throughout west-central and southwestern New Mexico and into east-central and southeastern Arizona.
Astragalus kentrophyta (Fabaceae) - Astragalus kentrophyta var. neomexicana is a relatively common and weedy species across northern New Mexico.
Astragalus lentiginosus var. australis (Fabaceae) - The distribution of populations of this taxon is widespread and locally common. Populations are found in extreme southwestern New Mexico and southeastern Arizona, and southward into Chihuahua, Mexico.
Astragalus missouriensis var. mimetes
Astragalus mollissimus var. matthewsii (Fabaceae) - Populations of this variety are endemic yet common throughout northwest New Mexico, extending from the Colorado border southward to the Zuni Mountains and eastward to Interstate Highway 25.
Astragalus mollissimus var. thompsoniae (Fabaceae) - Populations of this variety are peripheral in northwestern New Mexico (where it is locally common), yet they extend westward into Arizona and Nevada. Additionally, populations are reported from southeastern Colorado.
Astragalus monumentalis var. monumentalis (Fabaceae) - This variety may be misidentified with the rare taxon, Astragalus cottamii, a former variety of A. monumentalis, relatively common in Utah.
Astragalus newberryi (Fabaceae) - This taxon is a common species of the Great Basin and found throughout northwestern New Mexico northward into Utah, Nevada, Idaho, Oregon, and westward into Arizona.
Astragalus nothoxys (Fabaceae) - Populations of this species are locally common in extreme southwestern New Mexico and extend into southeastern Arizona and northern Chihuahua, Mexico.
Astragalus nuttallianus var. austrinus (Fabaceae) - Populations of this variety are common and widespread throughout southern and southeastern New Mexico; additionally, populations extend westward into Arizona, eastward into Texas and southward into Mexico.
Astragalus oophorus (Fabaceae) - Although widespread in the Great Basin, populations of this species have not been documented for New Mexico.
Astragalus pattersonii (Fabaceae) - Populations of this species are locally common in northwestern New Mexico, yet extend into western Colorado, southern Utah, southern Nevada and northern Arizona. Additionally, there are reported records of populations found in extreme northwestern Texas.
Astragalus pictiformis (Fabaceae) - Populations of this species are common and widespread in eastern and southeast New Mexico and extend into the Trans-Pecos of adjacent Texas.
Astragalus proximus (Fabaceae) - Populations of this species are common in northwest New Mexico and are found in La Plata and Archuleta counties in adjacent Colorado.
Astragalus puniceus var. puniceus (Fabaceae) - Populations of this species are widespread and locally abundant, extending from the panhandle of Oklahoma through southeastern Colorado, northeastern New Mexico and into extreme northwestern Texas.
Astragalus sabulonum (Fabaceae) - Populations of this species are peripheral and uncommon in extreme northwestern New Mexico (San Juan County) but extend westward through northern Arizona, southern Utah and Nevada and into southeastern California.
Astragalus shortianus (Fabaceae) - Populations of this species are widespread and locally abundant from north-central New Mexico into eastern Colorado and into Wyoming.
Astragalus thurberi (Fabaceae) - Populations of this species are locally common in extreme southwestern New Mexico but extend throughout southeastern Arizona and southward into northern Mexico.
Astragalus vaccarum (Fabaceae) - Populations of this species are peripheral in extreme southwestern New Mexico but extend throughout southeastern Arizona and northern Mexico.
Astragalus waterfallii (Fabaceae) - Populations of this species are widespread, occurring in southeastern New Mexico, into the Trans-Pecos of Texas, Chihuahua and into Coahuila, Mexico.
Astragalus wingatanus (Fabaceae) - Populations of this species occur across west-central and southwestern Colorado, into adjacent Utah and southward into central New Mexico.
Astragalus vaccarum (Fabaceae) - Populations of this species are peripheral in extreme southwestern New Mexico but extend through southeastern Arizona and northern Mexico.
Athyrium filix-femina var. californicum (Aspleniaceae) - Populations of this species are common along streams and seeps in southwestern North America.
Ayenia pusilla
Bartlettia scaposa
Besseya alpina (Scrophulariaceae) - Populations of this species are common in the southern Rocky Mountains.
Besseya arizonica
Bidens lemmonii
Blepharidachne bigelovii (Poaceae) - This species is endemic to the northern Chihuahuan Desert in the Trans-Pecos region of Texas and northern Coahuila. The two records for New Mexico are from Doņa Ana and Eddy counties. This species is peripheral in New Mexico.
Boechera villosa <>(Brassicaceae) - Considered a synonym of the widespread B. pallidiflora, with the type specimen being a oddball collection. M.D. Windham and I.A. Al-Shehbaz, 2006. New and noteworthy species of Boechera (Brassicaceae) I: sexual diploids. Harvard Papers in Botany 11(1): 61-88. P.J. Alexander, M.D. Windham, J.B. Beck, I.A. Al-Shehbaz, L. Allphin, and C.D. Bailey, 2013. Molecular phylogenetics and taxonomy of the genus Boechera and related genera (Brassicaceae: Boechereae). Systematic Botany 38(1): 192-209.
Bogenhardia crispa (Malvaceae) - The distribution of populations of this species is peripheral in New Mexico.
Botrychium lineare (Ophioglossaceae) - This species was newly discovered in New Mexico by Ben S. Legler in 2009 (Jour Bot Res Inst Texas 4(2). 2010). It occurs in very small populations, but is extremely widespread with occurrences in 13 western states and 5 Canadian provinces. There are 25-30 sites in Colorado. It has to many occurrences over a broad range to be considered rare by NMRPTC criteria.
Botrychium tunux (Ophioglossaceae) - This species was newly discovered in New Mexico by Ben S. Legler in 2009 (Jour Bot Res Inst Texas 4(2). 2010). This species was named in 2002 from southeastern Alaska and originally thought to be rare. It has since been found elsewhere in Alaska, Montana, Idaho, California, Colorado, New Mexico, Canada, and Norway. It is widely scattered with only one or two occurrences per state except Colorado where there are 5-10 occurrences. Individual populations can have many plants. This is a tiny plant that is difficult to find. It will likely be found elsewhere with further searches. This plant is too common and widespread to be considered rare by NMRPTC criteria.
Bouteloua breviseta (Poaceae) - Populations of this species are abundant in southeast New Mexico and adjacent Texas.
Brachystigma wrightii
Brickellia baccharidea (Asteraceae) - This species is considered rare in Rare Plants of Texas (Poole et al. 2007). It is found in at least four mountain ranges in southern New Mexico. It is even more common in southeastern Arizona where there are 50+ collections from 14 major and minor mountain ranges. It also occurs in Sonora and Chihuahua.
Brickellia lemmonii var. lemmonii (Asteraceae) - The taxonomy is currently under scrutiny.
Brickellia lemmonii var. wootonii
Brickellia modesta (Asteraceae) - This name may be synonymous with Brickellia fendleri.
Brickellia simplex
Brickellia squamulosa (Asteraceae) - Populations of the species are common in New Mexico.
Bulbostylis schaffneri
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Cacalia decomposita (Asteraceae) - This species needs further taxonomic study. Additionally, although the populations of this species are peripheral in New Mexico, yet relatively more common in the northern Sierra Madre mountains, populations have been over-harvested due to the medicinal properties of the plant.
Calandrinia ciliata var. menziesii (Portulacaceae) - Populations of this variety are peripheral in New Mexico and common in the Sonoran Desert.
Calypso bulbosa (Orchidaceae) - Populations of this species are relatively common and circumboreal.
Camissonia scapoidea (Onagraceae) - Population of this species are common in the Great Basin desert and are widespread and locally abundant in northwestern New Mexico.
Campanula uniflora
Cardamine cardiophylla (Brassicaceae) - This name is synonymous with Cardamine cordifolia.
Cardamine cordifolia var. incana
Carex bigelowii
Carex geophila
Carex gravida
Carex heteroneura var. brevisquama
Carex praegracilis
Carex scirpoidea
Carex ultra
Carex xerantica
Carlowrightia texana (Acanthaceae) - The distribution of populations of this species is peripheral in New Mexico.
Castilleja angustifolia (Scrophulariaceae) - Populations of this species have not been found in New Mexico.
Castilleja chromosa
Castilleja haydenii (Scrophulariaceae) - Populations of this species are very common in the peaks of mountains from Taos county to central Colorado.
Castilleja lanata
Castilleja laxa (Scrophulariaceae) - This name is synonymous with Castilleja tenuiflora. Additionally, populations of this species are common in Mexico.
Castilleja linariifolia (Scrophulariaceae) - Populations of this species occur throughout the Intermountain Region (Oregon and Montana to California and New Mexico. This paintbrush is the state flower of Wyoming.
Castilleja lineata (Scrophulariaceae) - Populations of this species are relatively widespread and common.
Castilleja occidentalis (Scrophulariaceae) - Populations of this species are relatively widespread and common.
Castilleja patriotica
Castilleja rhexiifolia (Scrophulariaceae) - Populations of this species are relatively common.
Castilleja tenuiflora
Castilleja wootonii (Scrophulariaceae) - Populations of this species are relatively common from the Sacramento Mountains to west Texas.
Caucalis microcarpa (Apiaceae) - In some years, populations of this species are relatively abundant.
Cerastium texanum
Cercocarpus intricatus (Rosaceae) - Populations of this species are peripheral in northwestern New Mexico (San Juan County) but are relatively widespread throughout the Great Basin desert.
Chaetopappa elegans (Asteraceae) - This name is synonymous with Ionactis elegans.
Chaptalia texana (Asteraceae) - Populations of this species are relatively common outside of New Mexico, and there are historic records of occurrences within a limited area of New Mexico.
Chenopodium cycloides (Chenopodiaceae) - This species occurs in sandy soils of the High Plains from southwestern Nebraska to southwestern Texas. There are at least 67 specimens in regional herbaria. It is not rare and probably greatly undercollected.
Chionophila jamesii (Scrophulariaceae) - Populations of this species are probably not present in New Mexico and otherwise are relatively common in Colorado.
Chrysothamnus spathulatus (Asteraceae) - Populations of this species are relatively common from Socorro County to the Guadalupe Mountains of New Mexico.
Circaea alpina (Onagraceae) - This species is considered a widespread weed.
Cirsium grahamii
Clematis bigelovii
Clematis hirsutissima var. arizonica (Ranunculaceae) - The taxonomy is questionable, and the variety is not recognized.
Cologania broussonettii
Cologania pallida
Cologania pulchella (Fabaceae) - This name is synonymous with Cologania broussonettii.
Conopholis alpina (Orobanchaceae) - Populations of this species are common throughout New Mexico and northern Mexico.
Conyza sophiifolia (Asteraceae) - This species was removed due to common sense.
Corallorrhiza striata var. striata (Orchidaceae) - This name is synonymous with Corallorrhiza striata var. berlandii, a relatively widespread variety across Canada and the western U.S.
Corydalis caseana ssp. brandegei (Fumariaceae) - The range of this variety is about 150 miles, locally abundant in Colorado and peripheral in New Mexico.
Cornus canadensis (Cornaceae) - Although populations of this species are disjunct in New Mexico, the distribution of populations are widespread further north.
Coryphantha dasyacantha var. dasyacantha (Cactaceae) - This name is synonymous with Escobaria dasyacantha, a species whose populations do not occur in New Mexico.
Coryphantha duncani (Cactaceae) - This name is synonymous with Escobaria duncani, a rare species.
Coryphantha organensis (Cactaceae) - This name is synonymous with Escobaria organensis, a rare species.
Coryphantha scheeri var. uncinata (Cactaceae) - This is a variant in regard to spine shape and is synonymous with Coryphantha scheeri var. valida.
Coryphantha scheeri var. valida (Cactaceae) - Populations of this variety are widespread and relatively common west of the Great Plains from southern New Mexico and southeast Arizona to southern Chihuahua, northeast Durango and southwest Coahuila, Mexico.
Coryphantha sneedii var. leei (Cactaceae) - This name is synonymous with Escobaria sneedii var. leei, a rare species.
Coryphantha sneedii var. sneedii (Cactaceae) - This name is synonymous with Escobaria sneedii var. sneedii, a rare species.
Coryphantha strobiliformis (Cactaceae) - This name is synonymous with Escobaria tuberculata which is common from southern New Mexico and southward to Zacatecas and Durango, Mexico.
Coryphantha vivipara var. bisbeeana (Cactaceae) - This name is synonymous with Escobaria vivipara var. bisbeeana. Further, populations of this variety are relatively common in southwestern New Mexico and adjacent Arizona, with a range of more than 100 miles.
Coryphantha vivipara var. radiosa (Cactaceae) - This name is synonymous with Escobaria vivipara var. radiosa. Specimens are not quite distinct from Coryphantha vivipara var. vivipara and are often confused with Coryphantha vivipara var. neomexicana, despite being distinct and common in the southern Great Plains, Texas Hill Country, and extreme southeastern New Mexico.
Crataegus erythropoda
Cryptantha bakeri (Boraginaceae) - Populations of this species occur peripherally in New Mexico; it is common in western Colorado and adjacent Utah.
Cryptantha paradoxa (Boraginaceae) - Populations of this species occur peripherally in New Mexico; it is common in western Colorado and adjacent Utah.
Cryptantha paysonii (Boraginaceae) - This endemic species is locally common across the southern part of New Mexico.
Cryptantha recurvata (Boraginaceae) - Populations of this species occur peripherally in New Mexico; it is a common species west of New Mexico to Nevada.
Cucurbita texana
Cuphea wrightii (Lythraceae) - Populations of this species are peripheral in New Mexico and are fairly common.
Cupressus arizonica (Cupressaceae) - Populations of this species are peripheral in New Mexico. This species is more common in adjacent Arizona and Mexico and as far as southern California.
Cuscuta fasciculata
Cymopterus breviradiatus
Cymopterus sessiliflorus
Cyclanthera dissecta
Cynanchum arizonicum
Cypripedium calceolus var. pubescens (Orchidaceae) - This name is synonymous with Cypripedium parviflorus, a species that is widespread across North America.
Cypripedium parviflorum var. pubescens
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Photo credits in header Peniocereus greggii var. greggii © T. Todsen,
Lepidospartum burgessii © M. Howard, Argemone pleiacantha ssp. pinnatisecta © R. Sivinski
Design: J. Mygatt; Copyright © 1999-2005 New Mexico Rare Plant Technical Council