CNF_RFSS_Plants_List_2013.xlsx

XLSX spreadsheet 32 KB Posted Apr 26, 2016

Attached to: IDIQ Biological Survey Services Federal contract opportunity
Solicitation number: AG-8197-S-16-0008
Issued by: Department of Agriculture Forest Service R3-Southwestern Region

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Southwest R3 Regional Forester's Sensitive Species List

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Plants

CNF (72) - USFS R3 REGIONAL FORESTER'S SENSITIVE SPECIES: PLANTS - 2013
Common Name	Scientific Name	FWS Status	Heritage Global	Heritage State (AZ,NM)	State of Occurrence	County	Forest(s)	Limiting Factors/Threats	Justifications as to why on list
BLUMER'S DOCK	Rumex orthoneurus		G3	S3,S2?	AZ,NM	Apache, Cochise, Coconino, Gila, Catron, Mora, Otero, San Miguel, Taos	A-S, CAR, COC, COR, GIL, LIN, SFE, TON (sensitive only for AZ forests)	Recreation, grazing, wetland alterations	Taxonomic study has changed the concept of this species. Many plants formerly identified as R. occidentalis are now considered to be R. orthoneurus greatly expanding the range. The Heritage Program ranks are based on the old narrower concept of the species. The State of Arizona has retained this plant on its endangered list (Highly Safeguarded under the Arizona Native Plant Law).
GREENE MILKWEED	Asclepias uncialis ssp. uncialis		G3G4T2T3	SNR,S2	AZ,NM,CO,OK,UT	Apache, Santa Cruz, Yavapai, Colfax, Grant, San Miguel, Union	A-S, CIB, COR, GIL, PRE, SFE	Rarity, fire, herbicides	It has a broad range, but is always rare and has small populations. Reported to prefer stable climax or near climax plains grassland communities. Reported to not tolerate competition from weedy annuals. Its responses to fire and grazing are unknown, but it may not tolerate factors that cause general habitat degradation. A specimen at UNM Herbarium documents Greene milkweed from Mesita de los Ladrones, Anton Chico Grant, Santa Fe NF.
WISLIZENI GENTIAN	Gentianella wislizeni		G2	S1	AZ,Mex	Cochise, Greenlee	A-S, COR	Limited distribution, grazing, recreation	This plant grows in high elevation clearings in pine-oak and mixed conifer forests at 2,060-2,880 m (6,880-9,600 ft). It appears to benefit from some disturbance such as low intensity fire. It flowers in late summer when its habitat tends to be most heavily grazed thus the seed crop is lost or reduced with grazing, which could be critical for a plant with low population numbers. Some of its habitats in the Chiricahua Mountains gets heavy recreational use.
GOODDING'S ONION	Allium gooddingii		G4	S3S4,S1	AZ,NM	Apache, Greenlee, Pima, Catron, Lincoln, San Juan	A-S, COR, GIL, LIN	Grazing, logging, any degradation of riparian habitats	This plant is very palatable and can be heavily grazed. The greatest threat is logging that will open up and dry out the moist habitat. This plant is being managed under a conservation agreement in which the Forest Service has agreed to retain this species on its Sensitive Species list. The State of Arizona lists this plant as endangered (Highly Safeguarded under the Arizona Native Plant Law).
ARIZONA ALUM ROOT	Heuchera glomerulata		G3	S3,S1	AZ,NM	Apache, Cochise, Gila, Graham, Greenlee, Navajo, Hidalgo	A-S, COR, TON	Rarity, wetland impacts from livestock, wildlife, or recreation	This species is found in shaded rocky slopes in humus soil near seeps, streams, and riparian areas of mountain ranges in southeastern Arizona. Its habitat is limited and it is infrequently collected. Its wetland habitats are vulnerable to multiple impacts.
METCALFE'S TICK-TREFOIL	Desmodium metcalfei		G3G4	SNR,S3?	AZ,NM	Cochise, Coconino, Grant, Sierra	COC, COR, PRE, GIL	Rarity, grazing	There are few recent collections of this rare plant. This plant is likely very palatable.
COCHISE SEDGE	Carex ultra (=C.spissa var. ultra)		G3?	S2,S3?	AZ,NM,Mex	Cochise, Coconino, Graham, Pima, Santa Cruz, Yavapai, Hidalgo	COC, COR, PRE, TON	Grazing, trampling	This plant grows in saturated soil near perennial seeps, streams, and springs. Grazing can heavily impact these areas if not properly managed.
CHIRICAHUA FLEABANE	Erigeron kuschei		G1	S1	AZ	Cochise	COR	Rarity and specialized habitat, fire, disease	This plant grows on shaded north-facing cliffs in mixed conifer forest. It could be directly vulnerable to fire or the killing of overstory trees from fire or disease could cause the moist shaded habitat to dry out. Logging is not a factor because this plant is mostly in wilderness.
TEXAS PURPLE-SPIKE	Hexalectris warnockii		G2	S1	AZ,TX,Mex	Cochise	COR	Extreme rarity, fire, collecting	This plant is sporadic and extremely rare across a broad area in Texas, southeastern Arizona, and Baja, Mexico. There are only four locations in Arizona (only one on Forest lands, which was last seen in 1992 despite several later searches). Response to fires and other disturbance are unknown. Orchids, particularly rare species, are sometimes collected by hobbyists interested in certain groups. The State of Arizona lists this plant as endangered (Highly Safeguarded under the Arizona Native Plant Law).
CHIRICAHUA ROCKDAISY	Perityle cochisensis		G1G2	S1S2	AZ	Cochise	COR	Extreme rarity, narrow range, specialized habitat, recreation, fire	This plant is endemic to rhyolite cliffs in the Chiricahua Mts. Most occurrences are on Chiricahua National Monument, but there are two recorded occurrences on the Forest. Recreation is a concern for the National Monument. Responses to fire are unknown.
HINCKLEY'S POLEMONIUM	Polemonium pauciflorum ssp. hinckleyi		G3T2Q	S1	AZ,TX, Mex	Cochise	COR	Very localized in Arizona, recreation, grazing, fire	This plant is known from Big Bend Texas and Mexico, but only occurs in the Chiricahua Mountains in Arizona. It occurs in Ponderos pine and oak forrests up to Douglas fir and white fir forests in various habitats with moderate disturbance. The general area is grazed and has heavy recreational use. This plant's response to fire is unknown although it has been found in a recently burned area.
CHIRICAHUA CINQUEFOIL	Potentilla rhyolitica var. chiricahuensis		GNR	SNR	AZ	Cochise	COR	Extremely limited range, recreation, grazing	This taxon was newly name in 2007 (Journal of the Botanical Research Institute of Texas 1(1):47-57). It is endemic to the upper elevations of the Chiricahua Mts in rocky openings in mixed conifer forest. Its abundance and potential impacts from Forest activities need to be evaluated.
MEXICAN TANSY ASTER	Psilactis gentryi (=machaeranthera mexicana)		G3	S1	AZ,Mex	Cochise	COR	Extreme rarity in U.S., grazing, wetland disturbance	This plant is know from only two collections in the U.S., both from the Huachuca Mts. It grows in moist habitats that might include highland meadows, fields, roadsides, and stream and lake margins. These habitats can be subject to heavy grazing and other disturbances.
BROADLEAF GROUND CHERRY	Physalis latiphysa		G1	S1	AZ	Cochise, Graham, Pima, Santa Cruz	COR	Extreme rarity, grazing	This plant occurs in scattered localities in SE Arizona, but it is extremely rare with only four known occurrences. Its habitat is washes in desertscrub or desert grassland mostly below the elevation of national forests. Cattle often congregate in this habitat for shade or scarce green forage.
TRANS-PECOS INDIAN PAINTBRUSH	Castilleja nervata		G3Q	S1	AZ,Mex	Cochise, Graham, Santa Cruz	COR	Rarity, grazing, loss of natural fire regime	This plant grows in only a few sites in bunch grass meadows that need fire for long-term maintenance. These meadows also need careful grazing management.
MAGUIRE'S (COPPERMINE) MILKVETCH	Astragalus cobrensis var. maguirei		G4T2	S2,S1?	AZ,NM	Cochise, Hidalgo	COR	Rarity, natural disturbances, recreation, grazing	Plants occur in highly vulnerable narrow shady canyons, which are areas of high impact due to grazing (plants are palatable), recreation and natural disturbance. These plants require riparian habitat.
CHIRICAHUA MUDWORT	Limosella pubiflora		GUGHQ	SX,SH	AZ, NM	Cochise, Hidalgo	COR	Extreme rarity, wetland loss from multiple factors	This is an extremely rare wetland plant. The Arizona HDMS ranks it as "presumed extirpated" from AZ and the New Mexico NHP ranks it as "likely extirpated" from NM, although it was collected in NM in 1991. The taxonomy of this species is in doubt, but even the species in which it would be included, Limosella aquatica,is seriously depleted in the two states from wetland loss.
CHIHUAHUA SCURF-PEA	Pediomelum pentaphyllum		G1	SH,S1	AZ,NM,TX, Mex	Cochise, Hidalgo	COR	Extreme rarity, habitat conversion, collecting	This plant grows in desert grassland or among creosote bush in sandy or gravelly loam soils. It is extremely rare, perhaps partly due to habitat type conversions from desert grassland to shrub dominated communities. It is reportedly a medicinal plant for native Americans and perhaps once collected although it is now too rare in the U.S. to be under any collecting pressure. There are no confirmed collection from NFS lands but a specimen was collected along State Highway 181 near Chiricahua National Monument in 1963. This collection is very near the Coronado NF and there is likely suitable habitat on NFS lands.
CHIRICAHUA ROCK CRESS	Arabis tricornuta		G1?	S1?	AZ	Cochise, Pima	COR	Rarity, possibly recreation	This plant is known from 9 locations, most of them in the Chiricahus Mts. It occurs near Rustler Park, Barefoot Peak, and Piney Campground that get heavy recreational use. Potential recreation impacts on this plant need to be monitored.
LEMMON MILKWEED	Asclepias lemmonii		G4?	S2	AZ,Mex	Cochise, Pima	COR	Fire, herbicides	This plant is found only in the Chiricahua, Huachuca, and Santa Rita mountains in Arizona, and in Mexico. It is rather uncommon where it occurs. It appears to be somewhat tolerent of disturbance and could occur where noxious weeds need control. It has been collected where fire has occurred, but its direct tollerence to fire is unknown.
LEMMON'S LUPINE	Lupinus lemmonii		G1G2Q	SNR	AZ	Cochise, Pima	COR	Narrow range, rarity	This plant is endemic to the mountains of southeastern Arizona where it occurs mostly in the Chiricahua and Dragoon mountains in open grassland, juniper and oak communities at 4,000-7,300 ft.
SHADE VIOLET	Viola umbraticola		G3G4	S2?	AZ,Mex	Cochise, Pima	COR	Rarity, specialized habitat, grazing, fire	This plant occurs in shady areas in canyon bottoms, usually within riparian pine-oak forests at 5,500-7,300 ft. It is known from three mountain ranges (Santa Catalina, Huachuca, and Chiricahua), but there are only six known occurrences. Shady riparian canyon bottoms are sometimes subject to grazing pressures. The responses of this plant to fire are unknown, but are expected to be detrimental due to overstory removal and scouring floods.
ARID THRONE FLEABANE	Erigeron arisolius		G2	S2	AZ, Mex	Cochise, Pima, Santa Cruz	COR	Infrequent occurrence, grazing	This plant is found at scattered localities in extreme southeastern Arizona. It favors moist areas in grasslands and grassy openings that are favorite feeding areas for livestock.
RUTTER'S FALSE GOLDENASTER	Heterotheca rutteri		G2	S2	AZ,Mex	Cochise, Pima, Santa Cruz	COR	Rarity, loss of grasslands, loss of natural fire regime	This species is dependent on healthy grassland habitats and may be vulnerable to loss of grassland. Fire may be an important management factor because it is found in habitats that historically burned frequently. The rarity of this plant is puzzling because it has many close relatives that are very weedy.
COLEMAN'S CRESTED CORALROOT	Hexalectris colemanii		GNR	SNR	AZ	Cochise, Pima, Santa Cruz	COR	Mining, collecting	The plants in Arizona were formerly included in H. revoluta, but are now considered a distinct species making them even rarer than before (Kennedy and Watson. Systematic Botany 35:64-76 (2010)). Some plants in the Santa Rita Mts are threatened by mining.
LEMON LILY	Lilium parryi		G3	S2	AZ,CA,Mex	Cochise, Pima, Santa Cruz	COR	Rarity, fire, flooding, collecting, grazing	There are only a few hundred plants in Arizona and a few thousand in California. This plant grows in wet shady canyon bottoms along perennial streams. These areas are vulnerable to the effects of scouring floods, often after severe watershed damage from forest fires. It is an attractive plant vulnerable to collecting. Lemon lily grows in riparian areas that are easily degraded by grazing or by the indirect effects of grazing induced watershed damage. No Arizona populations are presently grazed.
HUACHUCA MOUNTAINS LUPINE	Lupinus huachucanus		G2	S2	AZ	Cochise, Pima, Santa Cruz	COR	Rarity, logging, fire	This plant is restricted to the Chiricahua, Huachuca, and Santa Rita mountains where it occurs in scattered, but sometimes dense populations. This plant occurs in pine forest on moderate to steep slopes. It is likely sensitive to overstory removal from logging or fire.
SOUTHWESTERN MUHLY	Muhlenbergia palmeri (=M. dubioides)		GNR	S1	AZ, Mex	Cochise, Pima, Santa Cruz	COR	Rarity, grazing	This plant has been collected at only seven different localities in Arizona. There are no data from which to determine population trends. Southwestern muhly is palatable to ungulates. It occurs in woodland canyons and along stream courses that ungulate grazing could both directly and indirectly affect.
BEARDLESS CHINCHWEED	Pectis imberbis		G3	S1	AZ,Mex	Cochise, Pima, Santa Cruz	COR	Rarity, grazing, road maintenance	This plant grows in open semi-desert grasslands and Madrean evergreen woodlands. Within these communities, it has also been found on steep south-facing road cuts of decomposing granite. This plant has been recorded from about 12 localities in Arizona from 1937 to 1993. Several populations grow on road cuts that could be damaged or destroyed by road maintenance. Plants also occur in desert grassland communities subject to grazing, but plants are too rare to assess possible grazing impacts.
CHIRICAHUA MOUNTAIN BROOKWEED	Samolus vagans		G2?	SNR	AZ,Mex	Cochise, Pima, Santa Cruz	COR	Limited distribution and habitat, water diversions, wetland degradation, waterehed damage	This plant grows in moist sandy soil around springs, seeps, and in and along streams at elevations of 4,000-7,200 ft. It occurs in mountains of SE Arizona, but is most abundant in the Huachuca Mts. It is threatened by any activity that might dry up or degrade wetlands. This could include water diversions, recreation, and grazing. Also, watershed impacts that include grazing and forest fire can lead to scouring floods that destroy habitat.
NODDING BLUE-EYED GRASS	Sisyrinchium cernuum		G5	S2	AZ,TX,Mex	Cochise, Pima, Santa Cruz	COR	Infrequent occurrence, riparian degradation	This plant is widespread in western Mex. South to Jalisco and Guanajuato. Peripheral in U.S. Surveyed in 2001. Good populations in Shaw Can., Rincon Mts., and Big Casa Blanca Can., Santa Rita Mts. Coronado NF recommends not dropping until more surveys are done. It grows in riparian habitats that are sensitive to various types of disturbance.
SONORAN NOSEBURN	Tragia laciniata		G3G4	S3?	AZ,Mex	Cochise, Pima, Santa Cruz	COR	Limited occurrence, grazing, fire	This plant grows along streams, canyon bottoms, and shaded hillsides at 3,500-5,650 ft in elevation. Plants occur at scattered locations mostly within Santa Cruz County. The habitat has many uses including grazing, mining, road building, recreation, etc. The response of this plant to fire is unknown.
HUACHUCA MILKVETCH	Astragalus hypoxylus		G1	S1	AZ	Cochise, Santa Cruz	COR	Rarity, grazing, recreation	This species has a limited range and small populations. Populations have large fluctuations and high mortality due to drought. Plants are subject to trampling from hikers and cattle. One population occupies a four-wheel drive road where plants are damaged by vehicles.
SMOOTH BABYBONNETS	Coursetia glabella		G3?	S1	AZ,Mex	Cochise, Santa Cruz	COR	Rarity, grazing	This plant is known from only 9 locations in southern Arizona. Kearney and Peebles (1960) suggests it is heavily grazed, but quickly recovers. More populations are needed to adequately assess management needs.
VIRLET PASPALUM	Paspalum virletii		G3?	S1	AZ, Mex	Cochise, Santa Cruz	COR	Extreme rarity, grazing	This plant is known from only two localities in Arizona and has not been collected since 1970. Its habitats are sandy soil of canyon bottoms in semi-desert grassland and grassy areas in Madrean evergreen woodland. This is a palatable grass and its habitats are subject to grazing.
HUACHUCA CINQUEFOIL	Potentilla rhyolitica var. rhyolitica		GNR	SNR	AZ	Cochise, Santa Cruz	COR	Limited range, recreation	This taxon was newly name in 2007 (Journal of the Botanical Research Institute of Texas 1(1):47-57). It is endemic to the summit areas of the Huachuca and Santa Rita mountains where it forms dense clumps in crevices of rhyolitic and quartzitic outcrops. Its abundance and potential impacts from Forest activities need to be evaluated.
HUACHUCA GROUNDSEL	Senecio multidentatus var. huachucanus (=s. huachucanus)		G2G4T2	S2	AZ, Mex	Cochise, Santa Cruz	COR	Rarity, recreation, fire, lack of natural fire regime	This plant grows on rocky, poorly stablized mountain slopes and canyon bottoms in pine-oak or mixed conifer forests. It typically occurs in areas with a patchy matrix of moderate canopy cover and small openings. It is known from eight sites in three SE Arizona mountain ranges. Hikers could impact some populations. Populations monitored 1988-1993 showed downward trends for unknown reasons. Perhaps plants need more soil disturbance or canopy openings. The State of Arizona lists this plant as endangered (Highly Safeguarded under the Arizona Native Plant Law).
TEPIC FLAME FLOWER	Talinum marginatum		G2	S1	AZ,Mex	Cochise, Santa Cruz	COR	Extreme rarity, limited distribution, specialized habitat, road building, mining, trampling.	This plant is known from only five sites in the U.S., with four of them relatively close to each other in the Huachuca Mts. Plants grow in shallow sandy soil on exposed bedrock ledges and outcrops. Plants do not appear threatened under present management. Activities in the area that could affect plants include road building, mining, and trampling by hikers or cattle.
HELIOGRAPH PEAK FLEABANE	Erigeron heliographis		G1	S1	AZ	Graham	COR	Extremely limited distribution, recreation, road building and other construction, fire	Endemic to Pinaleno Mts. At high altitudes. Needs study to determine vulnerability to development, recreation, and fire.
CATALINA BEARDTONGUE	Penstemon discolor		G2	S2	AZ	Graham, Pima, Pinal, Santa Cruz	COR	Infrequent occurrence, recreation, grazing	This plant occurs in soil pockets of bare rock outcrops in chaparal or pine-oak communities. It is known from 14 populations scattered in southeastern Arizona. One population is in an area of recreational rock climbing. Several populations are in grazing areas, but impacts are likely small. The State of Arizona lists this plant as endangered (Highly Safeguarded under the Arizona Native Plant Law).
WHITE-FLOWERED CINQUEFOIL	Potentilla albiflora		G1G2	S1S2	AZ	Graham, Santa Cruz	COR	Extremely limited range, fire, or loss of natural fire regime	This plant is known only from the Pinaleno Mountains where it is locally abundant. It grows in open coniferous forests and rocky slopes at 7,500-10,000 ft elevation. Its response to fire or the effect on its habitat from unnatural fire regimes are unknown
NEW MEXICO BITTERWEED	Hymenoxys ambigens var. neomexicana		G3?T2?	S2?	NM	Hidalgo	COR	Extreme rarity, noxious weed control	This variety is known from near the Forest in the NM bootheel. This narrow endemic occurs in small populations and is known from only three localities, all within a 30 km area. It is not well studied and needs additional field surveys to determine abundance and potential threats. Members of this genus are often considered to be noxious weeds and could be targeted for control; although with the rarity and remote locations of this plant, this is unlikely.
TUMAMOC GLOBEBERRY	Tumamoca macdougallii		G4	S3	AZ,Mex	Maricopa, Pima, Pinal	COR	Rare on National Forest, urbanization, farming, overgrazing, recreation	This plant has been found to have a fairly broad distribution in desert habitats in southern Arizona and Mexico. The only known occurrence on National Forest lands is Sabino Canyon in the Santa Catalina Mountains. Many sites on private land west of Tucson are threateded with urban expansion.
TRELEASE AGAVE	Agave schottii var. treleasei		G5T1Q	S1	AZ	Pima	COR	Small populations, herbivore predation on flowering stalks.	This plant is known from less than 12 clones in the Santa Catalina and Ajo Mountains. It is vulnerable to extinction from any activity that might destroy clones, although known clones appear relatively secure. The State of Arizona lists this plant as endangered (Highly Safeguarded under the Arizona Native Plant Law).
SANTA CRUZ STRIPED AGAVE	Agave parviflora ssp. parviflora		G3T3	S3	AZ	Pima, Santa Cruz	COR	Limited range, road maintenance, collecting	This attractive agave is locally abundant within small range. Collecting is considered to be a minor threat. It is being retained of the Sensitive Species List because the State of Arizona lists this plant as endangered (Highly Safeguarded under the Arizona Native Plant Law).
SAIYA	Amoreuxia gonzalezii		G1	S1	AZ,Mex	Pima, Santa Cruz	COR	Very rare in southern Arizona. It is very palatable to livestock and javalina will dig up the rootstock. It was used as a food plant by native Americans, as all parts of the plant are edible. The habitat is subject to invasion by buffelgrass and Lehman's lovegrass that compete with the plant and change the fire regime.	This plant is known from only two or three sites in the U.S., all on the Coronado NF. The habitat is open rocky limestone hillsides at about 4,500 ft elevation. Grazing management is a concern because plants are very palatable. Competition and habitat changes from the introduction of exotic forage grasses is also a concern and could have eliminated much potentially suitable habitat.
LARGE-FLOWERED BLUE STAR	Amsonia grandiflora		G2	S2	AZ,Mex	Pima, Santa Cruz	COR	Small number of populations, limited reproduction, private land development, natural disturbance	The entire world distribution is 15-20 populations in two mountain ranges. Plants are long-lived and reproduce from rhizomes, but few seedlings are seen. Plants are non-palatable to livestock and regenerate well after fire. With development of private land, the national forest could become the refugial location for this plant.
CHILTEPIN	Capsicum annuum var. glabriusculum		G5T5	S2	AZ,TX,Mex	Pima, Santa Cruz	COR	Grazing, collecting	Chiltepin is a wild pepper that is sometimes collected for cooking. The Coronado NF has established the Chiltepin Botanical Area for conservaiton of this plant. Grazing is restricted during the plant's growing season. This plant is of agronomic interest because of its close relation to cultivated peppers and of cultural interest because of its long history of use in local cooking.
GENTRY INDIGO BUSH	Dalea tentaculoides		G1	S1	AZ,Mex	Pima, Santa Cruz	COR	Rarity, grazing, flooding	The only extant population is in Sycamore Canyon on the Sierra Vista Ranger District. The canyon is closed to grazing, but trespass cattle come up from Mexico. Plants could be destroyed by scouring floods, the severity of which is partly determined by upstream watershed conditions on the Forest. The State of Arizona lists this plant as endangered (Highly Safeguarded under the Arizona Native Plant Law).
BARTRAM STONECROP	Graptopetalum bartramii		G3	S3	AZ,Mex	Pima, Santa Cruz	COR	Specialized habitat, limited distribution, low numbers, mining, road construction and maintenance, collecting	This is a cliff plant. Some populations occur in historic and presently active mining districts. Some plants occur near roads where they could be impacted by road maintenance or improvements. Stonecrops are sometimes collected for the cactus and succulent trade and rare species, such as this one, may be particularly sought.
ARIZONA MANIHOT	Manihot davisiae		G4	S2	AZ,Mex	Pima, Santa Cruz	COR	Extreme rarity, grazing	There are only 11 specimen records from the U.S., the most recent collected in 1991 and the others collected in 1980 or earlier. Arizona manihot is unpalatable to ungulates and not grazed, but it grows in habitats that grazing can easily degrade. The effects from grazing-induced habitat alteration have not been studied.
WIGGINS MILKWEED VINE	Metastelma mexicanum (=Cynanchum wigginsii)		G4	S1S2	AZ,Mex	Pima, Santa Cruz	COR	Rarity, habitat alterations	This plant is known from only 11 sites in the U.S. It occurs on open slopes in open oak woodland where it grows underneath shrubs and twining on grasses and shrubs. It is likely sensitive to habitat alterations from fire or grazing.
SYCAMORE CANYON MUHLY	Muhlenbergia elongata (=M. xerophila)		G4	S1	AZ,Mex	Pima, Santa Cruz	COR	Rarity, grazing	This plant has been collected at only ten different localities in Arizona. There are no data from which to determine population trends. Sycamore Canyon muhly is palatable to ungulates. It occurs around rocky seeps in woodland canyons and in wet soil adjacent to bedrock streambeds that ungulate grazing could both directly and indirectly affect.
ARIZONA PASSIONFLOWER	Passiflora arizonica		GNR	SNR	AZ,Mex	Pima, Santa Cruz	COR	Rarity	This species was recently elevated to the rank of full species (Goldman in Madrono 50:243-264) after formerly being considered a variety of Passiflora foetida. It occupies the Lower Sonoran Zone at elevations up to 5,900 feet. There is one collection from near the Pajarito Wilderness. Other U.S. collections are from Buenos Aires NWR and the Baboquivari Mts. There are a few widely scattered collections from Sonora, Mex., but its abundance and status in Mexico are unknown. It grows on rocky desert hillsides and should be evaluated for possible impacts from FS activities.
LEMMON'S STEVIA	Stevia lemmonii		G3G4	SNR	AZ,Mex	Pima, Santa Cruz	COR	Rarity, recreation, fire	This plant grows in rocky canyon slopes and stream beds in pine-oak woodlands. There are only seven known occurrences in Arizona with most of these in the Santa Catalina and Rincon mountains near Tucson. These areas are under increasing recreation pressure. The response of this plant to fire is unknown.
AYENIA	Ayenia jaliscana (= A. truncata)		GNR	S1	AZ,Mex	Santa Cruz	COR	Extreme rarity, grazing	Nomenclature change. The nomenclature for this species has been confused in the past leading some plants to be identified a A. truncata and some as A. glabra, which is actually a separate species. No matter how treated, it is a rare plant in Arizona, known from fewer than 5 sites in the US. It is a woody perennial that often dies back to the ground in winter and resprouts in May. Its responses to grazing and habitat disturbance have not been studied.
BUSH-VIOLET	Browallia eludens		G1G2	S1	AZ,Mex	Santa Cruz	COR	Rarity, various activities occur in its habitat that need evaluation	The plant is an annual and populations fluctuate drastically with moisture conditions. Activities in its habitat include fuelwood cutting, military operations, recreation, grazing, and natural floods. The impacts from these activities need evaluation.
SANTA CRUZ STAR LEAF	Choisya mollis		G2?	S2	AZ	Santa Cruz	COR	Low numbers and narrow distribution, fire	This rare shrub is limited to a small area of the Pajarito, Atascosa, and Tumacacori mountains. It usually grows in the shade of oaks in Madrean evergreen woodland communities. It appears to reproduce mostly from rhizomes. Population trends and responses to fire are unknown.
MEXICAN HEMLOCK PARSLEY	Conioselinum mexicanum		G2	S1	AZ,Mex	Santa Cruz	COR	Extreme rarity	This plant is known in southern Arizona from only 2 very old specimens. Extant populations need to be found to evaluate management needs.
SANTA CRUZ BEEHIVE CACTUS	Corypantha recurvata		G3	S3	AZ, Mex	Santa Cruz	COR	Limited range, grazing, collecting	It has a small range and is considered an AZ rare plant, but CNF surveys have greatly increased the known abundance to 40+ locations. It is being retained of the Sensitive Species List because the State of Arizona lists this plant as endangered (Highly Safeguarded under the Arizona Native Plant Law).
ALAMOS DEER VETCH	Lotus alamosanus		G4	S1	AZ, Mex	Santa Cruz	COR	Rarity, flooding, grazing	This species has only two recent occurrences in Arizona both in wilderness areas, although it is reported to be abundant locally in Mexico. It is a semi-aquatic perennial that occurs in wet soil or sand in springs, seeps, and streams of canyons or meadows. This habitat is sensitive to natural floods, grazing impacts, and watershed degradation.
SUPINE BEAN	Macroptilium supinum		G2	S1	AZ,Mex	Santa Cruz	COR	Rarity, grazing, ORVs, road construction and maintenance, noxious weeds control	There are only about 12 populations of this plant in the U.S. with a relatively small acreage of occupied habitat. This plant grows on ridge tops and gentle slopes of rolling hills in semi-desert grassland or grassy openings in oak-juniper woodlands. These habitats are grazed and this plant is eaten by rodents and livestock. Some plants are near roads where they could be damaged by road maintenance or construction, or by highway right-of-way noxious weeds control efforts.
WHISK FERN	Psiilotum nudum		G5	S1	AZ, Southeastern US, HI	Santa Cruz	COR	Extreme rarity in AZ, collecting	Although common in the tropics worldwide, this is a very rare plant in AZ. It is a very primative form of fern that is often collected as a novelty or for botanical study. The State of Arizona lists this plant as endangered (Highly Safeguarded under the Arizona Native Plant Law).
RUSBY HAWKWEED	Hieracium abscissum (= H. rusbyi)		G2?	S1,SNR	AZ,NM,Mex	Cochise, Graham, Pima, Catron, Grant	COR, GIL	Rarity, fire	This plant is found in mixed confier forests above 8,000 ft. Of the four sites in Arizona, only one has been confirmed since 1990. Its status in New Mexico is unknown. Its response to catastrophic forest fire is likely negative.
PORSILD'S STARWORT	Stellaria porsildii		G1	S1,S1	AZ,NM	Cochise, Grant	COR, GIL	Extreme rarity, grazing, fire	This plant is known from only two locations. It grows in partly shaded understory of mixed conifer or aspen at 7,000-8,200 ft. Its responses to fire and grazing are unknown.
PINOS ALTOS FLAME FLOWER	Talinum humile		G2	S1,S2	AZ,NM,Mex	Santa Cruz, Grant, Hidalgo	COR, GIL	Rarity, grazing, urban development	This plant grows in shallow, gravelly, usually clayey soils overlying rhyolite. It is present for only a short period after summer rains. It has 10 known occurrences in the U.S., 8 in NM and 2 in AZ. Heavy grazing seems to reduce populations, but once grazing pressure drops, populations may explode in numbers for several years until other vegetation again becomes competitive. In Arizona, and perhaps in New Mexico, housing may be a future threat because some populations are close to areas being developed.
ARIZONA CORALROOT	Hexalectris spicata var. arizonica		G5T2T4	SNR,SNR	AZ,NM,TX,Mex	Cochise, Pima, Santa Cruz, Doña Ana, Otero, Hidalgo, Sierra	COR, GIL, LIN	Extreme rarity, fire, collecting	This variety is extremely rare and sporadic mostly occurring under oaks. Response to fires and other disturbance are unknown. Orchids, particularly rare species, are sometimes collected by hobbyists interested in certain groups. The State of New Mexico lists this plant as endangered. NMC Herbarium has one specimen from the Black Range (Gila NF) and two specimens from the Sacramento Mts. (Lincoln NF).
TOUMEY GROUNDSEL	Packera neomexicana var. toumeyi (=Senecio n. var. t.)		G5T2Q	S2	AZ	Cochise, Gila, Pima	COR, TON	Rarity, fire, logging	This is a plant of infrequent occurrence in the Chiricahua, Huachuca, Santa Catalina, and Pinal mountains. It occurs mostly in pine forest at 5,200-9,200 ft in elevation. It may be negatively affected by overstory removal throuth fire or logging, but this needs study
CHIHUAHUAN SEDGE	Carex chihuahuensis		G2G4	S2S3	AZ,NM,Mex	Cochise, Graham, Gila, Pima, Santa Cruz, Hidalgo	COR, TON	Grazing, trampling	This plant grows in wet meadows, cienegas, marshy areas, and canyon bottoms. Grazing can heavily impact these areas if not properly managed.
ARAVAIPA WOODFERN	Thelypteris puberula var. sonorensis		G5T3	S2	AZ, CA, Mex	Coconino, Maricopa, Pima, Pinal, Yavapai	COR, TON	Rarity, spring development, drought	This rare fern occurs in several scattered localites across central AZ including BLM sites in the Arrastra Mts. and Aravaipa Canyon in the Galiuro Mts. and FS sites in the Catalina Mts. and the Four Peaks area. There are additional populations in Mex and CA. Spring development and water diversion could damage its localized wetland habitat. Prolonged dought could dry up some sites.
GALIURO SAGE	Salvia amissa		G2	S2	AZ	Gila, Graham, Maricopa, Pima	COR, TON	Rarity, grazing, recreation, wood cutting, watershed conditions	Galiuro sage is a narrow endemic found abundantly only in the Galiuro Mountains of southeastern Arizona. It is believed extirpated from the Santa Catalina and Superstition mountains. It grows in upper floodplain terraces in canyon bottoms with mature sycamore, ash, walnut, and mesquite plant communities at 1,500-5,000 ft in elevation. Riparian canyon habitats are potentially vulnerable to such impacts as grazing, camping, wood cutting, and ORVs. Catastrophic flooding is increased when upstream watersheds are in poor condition.
PIMA INDIAN MALLOW	Abutilon parishii		G2	S2	AZ	Gila, Graham, Maricopa, Pima, Pinal, Santa Cruz, Yavapai	COR, TON	Mining, recreation and trail construction, livestock trampling, very palatable to livestock and wildlife, buffelgrass invasion, drought	Plants now occur mostly in steep, rocky terrain, which may be refugial habitat free from grazing pressure. Populations are small and have few plants. Populations appear to decline in dry years. Various threats could extirpate small populations.

DEFINITIONS
A-S	Apache-Sitgreaves National Forests
AZ	Arizona	72
AZGFD	Arizona Game and Fish Department
B	Status rank is for breeding population.
BBS	Breeding Bird Survey
BK	Black Kettle National Grassland
B-M	Bison-M
C	Candidate species for federal listing
CAR	Carson National Forest
CIB	Cibola National Forest
CO	Colorado
COC	Coconino National Forest
G	Heritage Global Ranking
G1	Globally critically imperiled
G2	Globally imperiled
G3	Globally vulnerable to extirpation or extinction
G4	Globally apparently secure
G5	Globally demonstrably widespread, abundant, secure
EMA	Ecosystem Management Area
FWS	U.S. Fish and Wildlife Service
GIL	Gila National Forest
KAI	Kaibab National Forest
KRB	Kiowa/Rita Blanca National Grasslands
LIN	Lincoln National Forest
N #	Heritage National Ranking
N	Nonbreeding qualifier e.g. S4N
NM	New Mexico
NMDGF	New Mexico Department of Game and Fish
NMSU	New Mexico State University
NR	Not ranked
NS	NatureServe
OK	Oklahoma
P*	Species is proposed for federal listing, and will be removed from the RFSS list if/once the final rule is published implementing the Federal protections provided by the ESA.
PRE	Prescott National Forest
Q	Questionable taxonomy that may reduce conservation priority
S	Heritage subnational ranking
S1	subnationally critically imperiled
S2	sensationally imperiled
S3	subnationally vulnerable to extirpation or extinction
S4	subnationally demonstrably widespread, abundant, and secure
SFE	Santa Fe National Forest
SH	possibly extirpated
SOC	U.S. Fish and Wildlife Service Species of Concern
S?	Status unknown
T	infraspecific taxon (trinomial) subspecies
TON	Tonto National Forest
TX	Texas
U	Currently unrankable
U.S.	United States
WSC	Wildlife of Special Concern in Arizona. Species whose occurrence in Arizona is or may be in jeopardy, or with known or perceived threats or population declines, as described by the Arizona Game and Fish Department's listing of Wildlife of Special Concern in Arizona (WSCA, in prep). Species indicated on printouts as WSC are currently the same as those in Threatened Native Wildlife in Arizona (1988).

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File details come from the government source that posted it. Updated Nov 14, 2017.