2016-2018 UNPS Utah Rare Plant Master List
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NumCronquist FamilyAPG/PPG FamilyUtah Flora FamilyTaxonUtah Flora Taxon NameAlternate Taxonomic NameUT-DISTRangeHabitat Spec# Indiv# PopsIntrins RarityThreatTrendMin ScorePot ScorePriorityScored ByScoreDateConfidenceCommentsNew CommentsComments ByDateBEAVBOXECACHCARBDAGGDAVIDUCHEMERGARFGRANIRONJUABKANEMILLMORGPIUTRICHSALTSANJSANPSEVISUMMTOOEUINTUTAHWASAWASHWAYNWEBE
163AsteraceaeAsteraceaeCompositaeEutrochium maculatum var. bruneriEupatorium maculatum var. bruneriPeriph11unk1unk1157HighAlexander & FratesJul 2014MediumAccording to Blake Wellard and Tony Frates, the distribution is really primarily limited to the Wasatch Front. Welsh's comment that the species is relatively common in the northern part of the state is a very old comment going back to the earliest Utah Floras. It is the type of out-dated comment that that does not take into account the habitat loss due to the rapid development of Wetlands in this region. The latest Uinta Basin flora confirms again that the species is known from just a few specimens in the Tidwell/LaPoint area and it appears that a lot of that habitat has been significantly impacted. Wellard has located a Bottle Hollow population; someone else indicated finding an occurrence near Neola but without further information. The Kane County report in A Utah Flora has not been relocated and its current status is unknown. In Utah County, most known occurrences are under current threat or have been lost. The UVU occurrence was bulldozed for the athetic practice field expansion. The Lehi shopping center occurrence has significant and imminent threats. The east shore Utah Lake occurrences are threated by new road construction. In Salt Lake County, Frates and Wellard still know of only one extant occurrence; that location has had some impacts and it has an uncertain future (close to a superfund site). Davis County has the highest number of known occurrances. Most are threatened. One site is in the southeast corner of the county at 6,000 ft. There are 50 plants with a Phragmites threat. There are four sites between Centerville and Ogden, sandwiched in about a 10 mile length area: (a) two tiny occurrences next to each other, less than 30 plants, weed and development threats in North Centerville; (b) two adjoining occurrences in south Farmington, one has been lost due to a housing development, the other consisting of 5 to 10 plants; (c) a small population in a weedy pasture in north Farmington; (d) A cluster of five occcurences in the Layton area with extensive teasel and burdock and Phragmites threats - only two of these are relatively stable. One site has only five plants, with over hald of the former population was lost at another due to Antelope Dr. construction in the past two years. The few scattered occurrences in Cache, Weber, and Box Elder Counties are in areas that have been impacted and some are believed to be lost by road construction and other development. Blake has only been able to confirm two extant Box Elder occurrences and knows of no extant Weber occurrence. He indicates that there were large populations from the 1970's reported in the vicinity of Farr West but there is so much private property, that has been difficult to investigate. This is why Blake and Tony thought it should be getting tracked by the UNHP. Based on these data, Habitat Specificity scored as "1" due to its status as a riparian species according to A Utah Flora ("River and canal banks, wet meadows, bogs, and seeps") and FNA ("Stream and canal banks, wet meadows, bogs, and seeps, calcareous soils"). Threats scored as "1" since riparian habitat modification and disturbance related to residential-highway development and farming impacts are degrading wetlands at least within the Wasatch Front portion of its range inUutah. Trends are scored as "1" based on comments by Frates & Wellard. Intrinsic Rarity and Number of Individuals scored as "unknown". Although this species is widespread and common in the eastern US, it is on the edge of its range in Utah. Perhaps in the past, Number of Populations could have been scored as a "0" since wetland sites were much more common in the past. There was likely more than 25 populations known in Utah. Frates and Wellard make a case for the Number of Populations (and therefore the Trend also) to be shrinking dramatically over the past ten years due to development. As delimited above, this taxon is estimated herein to have not much fewer than 25 populations and is on the borderline for a "1" in this category This taxon is currently on the "High" list, but it may be placed on the "Watch" list if more than 25 populations are found in Utah as a result of more intensive surveys, especially in the Uinta Basin.
Alexander and FratesFeb 2016xxxxxxxx
1246OnagraceaeOnagraceaeOnagraceaeEpilobium nevadenseReg End11110unkunk46WatchUNPS Rare Plant Committeeprior to 2008MediumOnly 6 specimens in Utah have been collected. It has been found in Millard County in the Canyon Mountains (Goodrich 14918, 15144, BRY, NY; Franklin 7308, 7310 SJNM); in Washington County in the Bull Valley Mountains-upper Beaver Dam Wash drainage (Higgins 20843 BRY; Atwood 20132 BRY, NY) and in the Beaver Dam Mountains (Higgins 778 BRY); and in Iron County at the mouth of Camp Creek S of Kanarraville (Thorne 5689 BRY, NY, ZION herbarium). It has an equally sparse N to S range in Nevada with montane sites in Eureka, White Pine, Lincoln and Clark Counties. There is a new report of a population in the Grand Canyon in Mohave County, Arizona. Although the habitat does not seem unusual according to A Utah Flora ("Pinyon-juniper and oak-mountain mahogany communities, on limestone or quartzite"), the Intermountain Flora ("talus and cliffs") and herbarium specimen label data suggest that this is a rock crevice species, inhabiting both limestone and igneous substrates. In Utah, naturalized mountain goats do not apear to be threateneing this species since it occurs at lower elevation sites (3100 ft to 8700 ft in Utah) and is only known from ranges where goats have not been transplated by the State of Utah. The cliff and talus habitat preferred by the species likely also reduces the impact by livestock grazing. Climate change may be a threat. Droughts and rapid snowmelt due to wind-blown sediments are melting snowpack earlier than normal in our region. Threats and Trends are scored as "unknown" due to uncertainty of the magnitude of the impacts of disturbance on extant populations and the lack of population-level surveys. These changes do not re-rank this species from the "Watch" list.AlexanderFeb 2016xxx
1046PolygonaceaePolygonaceaePolygonaceaePersicaria pensylvanicaPolygonum pensylvanicumSparse111101unk56ExcludedAlexanderAug 2015LowA taxon not included in previous versions of the UNPS Rare Plant list, but its apparent rarity in Utah warrants further research. Only 5 specimens at BRY have been collected. It has been found in Kane, Utah, and Wasington Counties in Utah. This taxon is widespread throughout the eastern U.S. and Canada. Sensu FNA, "Persicaria pensylvanica is a morphologically variable allotetraploid, with P. lapathifolia probably one of the parents", which is the reason it is often confused with P. lapahtifolium. Habitat Specificity scored as "1" due to its status as a riparian species according to A Utah Flora ("Stream and pond margins and other wet sites") and FNA ("Moist, disturbed places, ditches, riverbanks, cultivated fields, shorelines of ponds and reservoirs"). Threats scored as a "1" due to increasing riparian habitat modification and disturbance from residential development, the grazing-related impacts of cattle, farming-related disturbance, and municipal water pumping. These are the primary reasons for the upgrade of the threats to this species to a "1". Trends are scored as "unknown" due to uncertainty of the magnitude of the impacts of disturbance on extant populations and the lack of population-level surveys. This taxon is ranked on the "Watch" list. [Alexander, Aug 2015]; Previous rankings above are not valid since this taxon may be introduced in our area. This taxon is re-ranked to the "Excluded" list until evidence of its native status in Utah is confirmed.AlexanderFeb 2016xxx
268AsteraceaeAsteraceaeCompositaeTownsendia apricaTownsendia apricaTownsendia jonesii var. lutea, in partLocEnd211101177ExHighD. ClarkApr 2009Listed Threatened under ESA. Edaphic endemic, vulnerable to trampling, pops mostly small, trend downward in recent years from drought.data for this taxon may be found by examining the 5 year plant completed in 2013 by FWSUNPS Rare Plant CommitteeMar 2015xxx
371BrassicaceaeBrassicaceaeCruciferaeHesperidanthus argillaceusSchoenocrambe argillaceaThelypodiopsis argillaceaLocEnd2111unk1unk68ExHighUNPS Rare Plant Committeeprior to 2008Listed as Threatened under ESA.a potential habitat model was developed at U of WY by Shannon AlbekeUNPS Rare Plant CommitteeMar 2015x
373BrassicaceaeBrassicaceaeCruciferaeHesperidanthus suffrutescensSchoenocrambe suffrutescensGlaucocarpum suffrutescensLocEnd2111unk1178ExHighUNPS Rare Plant Committeeprior to 2008Listed as Endangered under ESA. Unk pollinators, low recruitment according to Larry Englanda potential habitat model was developed at U of WY by Shannon Albeke, Matt Lewis from USU did reproductive biology and effects of dust on reproductive successUNPS Rare Plant CommitteeMar 2015xx
375BrassicaceaeBrassicaceaeCruciferaeLepidium barnebyanum Lepidium barnebyanum LocEnd2111unk1unk68ExHighUNPS Rare Plant Committeeprior to 2008Listed as Endangered under ESA. Intrinsic rarity could be a 1, recruitment is probably low (according to Duane Atwood)Bioblitz survey in 2012, found additional plants but no additional populations. Recruitment still unknown. A potential habitat model was developed at U of WY by Shannon AlbekeUNPS Rare Plant CommitteeMar 2015x
455CactaceaeCactaceaeCactaceaePediocactus despainiiPediocactus despainiiLocEnd211111188ExHighD. ClarkFeb 2009Listed Endangered under ESA, threats high from ATV rec, over-collecting, habitat specialist, trend downwardTypical P. despainii is not known for Wayne County. The past list had a "?" in Wayne County for this species. The specimens from Wayne County need confirmaition (population marked "?" for this species), molecularly, to determine if they are this species. 8,000+ individuals in around 19 populations. Most recent population discovered in 2013. New population is farther north in Emery County, near the northern border, than previous known populations. Southern-most populations of this cactus are impacted by cactus longhorn beetle. Threats also include grazing, atv disturbance, and climate change. A FWS Recovery plan in development.UNPS Rare Plant CommitteeMar 2015x?
457CactaceaeCactaceaeCactaceaePediocactus winkleri Pediocactus winkleri LocEnd211111188ExHighD. ClarkApr 2009Listed Threatened under ESA, threats high from ATV rec, over-collecting. Trends significantly downward in recent years.over 4 populations and a total of 5,000 individuals in latest census. Need to track down voucher information for 2015 UNPS Meeting report of this plant being found in Sevier County. Threats include grazing, atv disturbance, climate change. Illegal collection a threat to Notom Road populations. Cactus longhorn beetle observed recently impacting this species more than P. dispainii due to its more southern range. A FWS Recovery plan is in development.UNPS Rare Plant CommitteeMar 2015?x
464CactaceaeCactaceaeCactaceaeSclerocactus wrightiae Sclerocactus wrightiaeLocEnd200111166HighUNPS Rare Plant CommitteeMar 2015Listed Endangered under ESA, high degree of threats from over-collection, ATV recreation, road building, droughts, and grazing. Trend is declining.D. Rooks, 2011-2013 survey, found 12,000 individuals on BLM from 151 localities of 500 known sites. 71 individuals on average per locality. This taxon is also present in E Sevier County based on this survey. Total sstimate of all populations is 35,000+ individuals. D. Clarks original ranking estimate was low and did not include many of the above sites. Numbers of Individuals rescored as "0" from "1". Occurs on many different geological substrates, not just the Mancos shale. Habitat Specificity rescored as "0" from "1". Threat from cattle and ATV disturbance may be lower in contribution than other cacti. 15 of 17 sites that were scored as extirpated in previous inventories were found recently to have viable populations. These changes re-rank this taxon from the "ExHigh" to the "High" List.UNPS Rare Plant CommitteeMar 2015xxx
596FabaceaeFabaceaeLeguminosaeAstragalus anserinusAstragalus anserinusLocEnd211101177ExHighUNPS Rare Plant Committeeprior to 2008Added to USFWS candidate list in Sept 2009. Edaphic endemic of tuffaceous sediments, pops sharply declined after large 2007 wildfiresPopulation recently sustained at around 30,000 individuals after a drop from high of 60,000.UNPS Rare Plant CommitteeMar 2015x
1024PolygonaceaePolygonaceaePolygonaceaeEriogonum mitophyllumEriogonum brevicaule var. mitophyllum LocEnd2111unk1178ExHighFittsMar 2015Arapien shale endemic [UNPS 2008]status revised to Ex High in 2013. Robert Fitts reported low numbers and high threats from 2012 Heritage program studies [Alexander & Fits 2013]; Habitat being actively mined near Aurora near Salt Creek, S of Salina. Some portions of the population on BLM land, remaining on patented mining claims. Trend is down according to observations by R. Fitts. These changes do not re-rank this taxon from the original ranking scored by the UNPS prior to 2008.FittsMar 2015x
1201ScrophulariaceaePlantaginaceaeScrophulariaceaePenstemon grahamii Penstemon grahamii LocEnd211111188ExHighUNPS Rare Plant Committeeprior to 2008pops small, threats high, poor pollination, trends down40333 individuals in 24 populations. Neese collection at BRY for this taxon a voucher for Duschesne County. Heritage-BLM surveys have also documented this taxon for Duchesne County; low seedling recruitment a possible reason for the score of "1" in Intrinsic RarityUNPS Rare Plant CommitteeMar 2015xxx
1219ScrophulariaceaePlantaginaceaeScrophulariaceaePenstemon scariosus var. albifluvisPenstemon scariosus var. albifluvisLocEnd211101177ExHighUNPS Rare Plant Committeeprior to 2008Candidate for listing under ESA, threatened by mineral development in narrow range in Uinta Basin12,215 individuals in 8 populations. Seedling recruitment higher in this taxon than in P. grahamii.UNPS Rare Plant CommitteeMar 2015x
721GentianaceaeGentianaceaeGentianaceaeFrasera ackermaniaeSwertia ackermaniaeLocEnd2111unk1unk68ExHighUNPS Rare Plant CommitteeMar 2015Threats have been scored as "1" from "0" in the original ranking from the UNPS prior to 2008. ATV's, mainly 2-wheeled dirt bikes, have been observed disturbing habitat in populations of this taxon. These changes re-rank this taxon from the "High" to the "ExHigh" ListUNPS Rare Plant CommitteeMar 2015x
46ApocynaceaeApocynaceaeApocynaceaeCycladenia humilis var. jonesiiCycladenia humilis var. jonesiiC. jonesiiRegEnd111111066HighUNPS Rare Plant Committeeprior to 2008Listed as Threatened under ESA. Pops mostly small, habitat specialized, important reproductive bottlenecks, pops stable? (perhaps should be scored higher on trend), many pops are in areas receiving few human impactsGenetic data suggests that this variety in Utah is distinct from the population in California, which has not been named as a separate taxon yet. The population in Pipe Spring area of northern Arizona is still considered var. jonesii. Only a few populations are accessible by ATV or cattle. Most are in remote areas.UNPS Rare Plant CommitteeMar 2015xxxx
53AsclepiadaceaeApocynaceaeAsclepiadaceaeAsclepias welshiiAsclepias welshiiLocEnd211111077ExHighUNPS Rare Plant CommitteeMar 2015Listed as Threatened under ESA. Low sexual reproduction and seed production (loss of some fruiting plants from trampling), intrinsic rarity may be = 1, better trend data needed (may be stable in recent times)2 populations in Utah, one on the Arizona-Utah border, and 5 in Arizona (two on Navajo Indian Reservation). 98% of known individuals (ramets) in Coral Pink Sand Dunes State Park. Primary threat ATV disturbance. Population trends difficult to document due to life history of the species. Individuals are difficult to track over time. Poor seedling survival and population dynamics of ramet survival and movement in dunes is evidence for the re-scoring of Intrinsic Rarity from "0" in the original UNPS ranking prior to 2008 to "1". These changes re-rank this species from the "High" to the "ExHigh" list.UNPS Rare Plant CommitteeMar 2015x
1196ScrophulariaceaePlantaginaceaeScrophulariaceaePenstemon duchesnensisPenstemon duchesnensisP. dolius var. duchesnensisLocEnd210101166HighUNPS Rare Plant CommitteeMar 2015As faras known, this taxon is present only on private and tribal lands. Unlike P. flowersii, there are no known populations on federal lands. New drilling development is more common within this taxon's range and is impacting the integrity of these populations. The exact number of populations and individuals that have been impacted from oil & gas develoipment is not known. Trends re-scored a "1" from "unknown" in the original UNPS ranking prior to 2008 These changes re-rank this taxon from the "Watch" to the "High" list.UNPS Rare Plant CommitteeMar 2015x
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