NEVADA NATIVE PLANT SOCIETY
Rare Plant Committee Meeting
NEVADA RARE PLANT WORKSHOP
Thursday, 1 April 2004, Reno

2004 FINAL AGENDA
http://heritage.nv.gov/nrpw/agenda04.htm

The chair reserves the right to prioritize agenda items based on time received, conservation priority, presence of participants with expert knowledge, and/or relevance to other items being discussed, and to curtail lengthy or marginally relevant items, to ensure that the most critical items are addressed. Comments from members and participants on current agenda items can be found on the Member Comments page.

• Las Vegas on Tuesday, 5 April 2005? UNLV Campus still available?
• Lunch Break?
• Overview of the Agenda

• Nevada State Listing Recommendations from the 2003 Workshop [emergency-list Eriogonum diatomaceum (Churchill Narrows buckwheat), list Eriogonum corymbosum (Las Vegas buckwheat), and de-list Astragalus mohavensis var. hemigyrus (halfring milkvetch - see comments from Dana York)] were submitted to the Nevada Division of Forestry in July 2003.  Update on listing progress and/or actions? Update on taxonomic studies or description of Las Vegas buckwheat? Move Las Vegas buckwheat to the NNPS Threatened List? Move halfring milkvetch to the NNPS Watch List? 
• Astragalus lentiginosus var. stramineus (Straw milkvetch) - recommended for NNPS Watch List by 2002 Workshop, left open for Threatened list by the 2002-2003 Workshops pending surveys in the Mesquite area, where it may be impacted by development. Locally plentiful over a very restricted range in the lower Virgin River valley of Mohave Co., Arizona, and adjacent Clark Co., Nevada. Heritage ranks T2T3, S1S2, three Nevada occurrences documented by collections at UNLV. Jason Alexander (see his comments) considers the Nevada populations intermediate with the common var. fremontii, but still serving as an important conduit and component of the genetic diversity in var. stramineus. Any other new information? Add to NNPS Threatened List? Recommend for BLM Sensitive list? Is Nevada State listing yet appropriate?
• Astragalus preussii var. laxiflorus (Lancaster milkvetch) - Left open by the 2002-2003 Workshops pending studies by Jason Alexander. Fewer than 20 known occurrences in Nevada and possibly globally (T2T3), perhaps fewer than 6 in Nevada (S1S2). Locally plentiful over a restricted range in the lower Muddy River and Virgin River valleys of Mohave Co., Arizona, and adjacent Clark Co., Nevada, mainly on disturbed gypsum substrates in Lake Mead NRA, with a small disjunct location near Lancaster, California. Welsh et al. (1993) report it to be common along the road south of Overton toward Lake Mead. Seven Nevada occurrences documented by specimens at UNLV. On CNPS List 1B, R-E-D- 3-3-2. The California population has recently been verified as extant on Edwards AFB, but Jason Alexander (see his comments) considers it likely to be genetically distinct from the Nevada population. Any other new information? Add to NNPS Watch List?
• Botrychium lineare (slender moonwort) - left open by the 2002-2003 Workshops, recommended for NNPS Watch List and Forest Service sensitive status pending confirmation of its presence in the Spring Mountains. As of January 2003, Dr. Donald Farrar's enzyme electrophoresis results indicated that plants of B. lineare in the Spring Mountains, if present at all, are atypical, different from other known populations of the species, probably tetraploid, and possibly F1 hybrids involving B. crenulatum. Botrychium lineare was petitioned for listing under the Endangered Species Act, found warranted for Threatened listing but precluded by higher priorities, and remains a Candidate for listing. Any new information? Is it yet appropriate to give B. lineare status or recommendations in Nevada?
• Botrychium sp. (Spring Mountains moonwort) - Left open by the 2003 Workshop, pending further study and formal description. As of January 2003, Dr. Donald Farrar was confident in reporting an undescribed species of moonwort based on his enzyme electrophoresis results. It is related to B. crenulatum and B. lunaria and so far is known only from the Spring Mountains. Any new information? Add to NNPS Watch List? Recommend addition to USFS sensitive species list?
• Draba incrassata - Left open by 2000-2003 Workshops until Steve Rae's report of its presence on the Nevada side of the Sweetwater Mountains can be verified. Field surveys by the Nevada Natural Heritage Program and Jackee Picciani in July 2003 found no plants or potential habitat at the highest elevations in Nevada, but visually identified some low-probability habitat in a different area at somewhat lower elevation.  A field visit to this area is planned for 2004. Any other new information? Leave open until 2005?
• Lathyrus grimesii and Trifolium leibergii - any new information on status or monitoring of population(s) infested by leafy spurge or other noxious weeds?
• Mimulus ovatus - Steamboat monkeyflower. Considered by past Workshops for State listing recommendation, and left open pending better definition of the taxonomy and range. Is an NNPS Threatened species. The population at Steamboat Springs, known to mass-flower in some years, has not been seen for the past three years. Incidental surveys in 2001 and 2003 have documented the continued presence of a very small population just north of Carson Hot Springs in Carson City, but another larger population south of there has been extirpated by residential and freeway construction. Specimens annotated by Noel Holmgren in the RENO herbarium range from northern Douglas County to the Red Rock area of Washoe County. Any further information on the taxonomic status and possible hybrid origin of this taxon, or it's geographic range beyond the Steamboat Springs area? See 2002 comments from Noel Holmgren. Is a State listing recommendation yet appropriate?
• Perityle congesta (Grand Canyon rockdaisy) - left open by the 2002-2003 Workshops pending verification of a Nevada specimen. Reported from one Nevada site east of Spirit Mountain in the Newberry Mountains, Clark Co. Any new information? Add to NNPS Watch List?
• Petalonyx thurberi ssp. gilmanii - Death Valley sandpaper plant. Left open at the 2001-2003 Workshops, pending verification of a Nevada report from southern Nye County, Nevada. Any new information? See comments from Dana York. Add to NNPS watch list?
• Phacelia geraniifolia (Jaeger phacelia, =P. perityloides var. jaegeri) - left open by the 2002 Workshop pending further information on its range in Nevada. Known only from a few locations in the Sheep Range of Clark County, Nevada, and from Clark Mountain (one quadrangle), San Bernardino Co., California, generally in sheltered carbonate rock crevices. Reported to be fairly common in Red Rock Canyon NCA, where Pat Leary (see his comments) knows it from less than a dozen populations from Potosi Mountain to at least La Madre Mountain. Ranked G2, S2 in Nevada. On CNPS List 1B, R-E-D 3-1-2. Any further information? Add to NNPS Watch List?
• Phacelia laxiflora (nodding scorpionflower, =P. perityloides var. laxiflora) - left open by the 2002 Workshop pending further information on its Nevada range. Known only from sheltered, sometimes moist carbonate rock crevices in the Virgin River gorge, Washington Co., Utah, Emory Falls in the Grand Canyon, Mohave Co., Arizona, and the Virgin Mountains, Clark Co., Nevada. Ranked G2G3, S1? in Nevada. Any new information? Add to NNPS Watch or Marginal List?
• Sisyrinchium funereum (Death Valley blue-eyed grass) - add to the NNPS Threatened List by the 2003 Workshop, and recommended for the first time for addition to the Nevada state list of fully protected species. Cholewa and Henderson (Flora of North America vol. 26, p. 362) recognize the species as distinct based on predominantly branched stems, hyaline margins of inner spathe broad, long, apically rounded or truncate, and flowers pale blue, and report it as endemic to the Death Valley and Ash Meadows area, in moist grassy areas along streams and springs where the soil is strongly alkaline. See comments from Anita Cholewa. Heritage ranks G2G3, S1S2. On CNPS List 1B, R-E-D 3-1-2. USFWS Surveys in the Ash Meadows area in 2003 found many of the plants there to fit the description of, and to not be reliably distinct from, Sisyrinchium radicatum (Las Vegas blue-eyed grass, added to the NNPS Watch List in 2003), and specimens from these surveys were sent to Dr. Cholewa in August 2003. See comments from Dana York. Wetland habitat of both species highly vulnerable. Has there yet been any response from Dr. Cholewa, or any other new information about the problem? Does Sisyrinchium funereum yet merit a second recommendation for addition to the Nevada state list of fully protected species? Should either or both be recommended for the BLM sensitive list?

• Jim Reveal: questions and answers on upcoming revisions to buckwheat taxonomy (10-15 minutes maximum)
• Other Agencies?
• Jim Morefield, Nevada Natural Heritage Program: program updates.
• BRIEF Questions and Answers.

• Anulocaulis leiosolenus var. leiosolenus (sticky ringstem) - this gypsum endemic has long been on the NNPS Dropped ("D") list, presumably because it is much more widespread outside Nevada, and there are also several known occurrences in Clark County. It is, however, a Covered Species under the Clark County Multiple Species Habitat Conservation Plan, for reasons perhaps some members of the Workshop can help us understand. As treated in Flora of North America, vol. 4 (2003), several varieties are recognized, only the most widespread of which occurs in Nevada. It occurs in the lower Grand Canyon area and adjacent Nevada, with an isolated occurrence in north-central Arizona, and then is disjunct to the largest part of its range in southeastern New Mexico and extreme west Texas. Should this species be of greater conservation concern in Nevada than it has been for the past 20 years?  Add to NNPS Watch or Marginal list? Recommend for BLM sensitive species list?
• Astragalus anserinus (Goose Creek milkvetch) - recently petitioned to the U.S. Fish and Wildlife Service for emergency listing under the Endangered Species Act, apparently based on increased impacts and threats to the Idaho (and Utah?) populations.  In Nevada, we have 4 small patches in the Goose Creek area of extreme northeastern Elko County. The recent disjunct collection reported from about 200 km to the west in the Owyhee Desert of northwestern Elko County is no longer thought to represent this species, and is apparently A. purshii instead. The Nevada populations were last surveyed in 1992. Any more recent information on conditions of the Nevada sites? Any need to recommend status changes at this time?
• Atriplex argentea var. longitrichoma (Pahrump silverscale) - recently described annual, segregated from Atriplex argentea complex based on presence of long deciduous hairs and different fruit characters, closest to Atriplex argentea var. hillmanii as recognized in Flora of North America, vol. 4, distinguished mainly by the abundant deciduous hairs and subtle differences in leaf shape. Restricted to Pahrump and Stewart valleys, most abundant in abandoned disturbances. Based on specimens cited in the original publication, it is known from one occurrence each in Nevada and California. Threatened by habitat conversion in Pahrump Valley. Heritage ranks currently T1T2, S1, added to the NNPS Watch List by the 2003 Workshop. Any new information? Recommend for BLM sensitive list? NNPS Threatened status more appropriate?
• Calochortus panamintensis (Panamint Mountains mariposa lily) - recently confirmed in Nevada from a single collection in Phinney Canyon (Grapevine Mountains, Death Valley National Park), otherwise known only from the Panamint Mountains of Inyo County, California. Nevada Heritage ranks G3 S1, on CNPS List 4, R-E-D code 1-2-3. Threats relatively low. Add to NNPS Watch or Marginal list?
• Eriogonum douglasii var. nov. (Sunflower Flat buckwheat) - soon to be described by James Reveal, this isolated Nevada endemic is known only from 2-3 distinct occurrences in the Sunflower Flat area north of Wildhorse Reservoir in Elko County. How confident are we in the taxonomy (distinctiveness) of this variant? Could it have been missed in other places, or is it likely restricted to this area? Add to the NNPS Watch List? Recommend for addition to the Humboldt-Toiyabe National Forest sensitive list?
• Eriogonum microthecum var. nov. (Schoolcraft buckwheat) - a tall, robust variant of the species, soon to be described by James Reveal from two occurrences in the Seven Lakes Mountain area of Washoe County, Nevada, and within about a 10-mile radius of Doyle in adjacent Lassen County, California. How confident are we in the taxonomy (distinctiveness) of this variant? Could it have been missed in other places, or is it likely restricted to this area? Add to the NNPS Watch List? Recommend for addition to the BLM sensitive species list?
• Eriogonum nutans var. glabratum (Deeth buckwheat) - apparently endemic to Elko County, Nevada, in the corridor near Interstate 80 and the railroad from Halleck (northeast of Elko) to Deeth to Wells to Montello, where it is known to the Nevada Natural Heritage Program from 8 collections representing about 5 separate occurrences, all from before 1975. In his draft treatment for Flora of North America north of Mexico (posted January 2003), Reveal states that the variety "occurs naturally only in Elko Co., Nevada. It was inadvertently introduced into the Truckee area of Nevada Co., California, probably as a result of truckers stopping to put chains on their truck tires before crossing the Sierra Nevada. The variety was gathered by Gordon True [there] from 1965 until 1970, but the plant apparently failed to persist." The habitat is "Clayey flats and slopes in saltbush, greasewood and sagebrush communities, 750-1300 m," which in this area can be subject to heavy grazing pressure and other disturbances. Add to the NNPS Watch List? Recommend for addition to the BLM Sensitive Species List?
• Horkelia hispidula (White Mountains horkelia) - one collection reported from Nevada by Dean Taylor (Taylor 15283, 20 July 1995) in the White Mountains, ridge 1 mile NE of Trail Canyon Saddle north of Boundary Peak, 11,000 ft. Otherwise endemic to the White Mountains in California. On CNPS List 1B, R-E-D 3-1-3. Heritage ranks G2, S1. On Inyo National Forest Sensitive Species List. Add to NNPS Watch List?
• Imperata brevifolia (satintail - Poaceae) - Mark L. Gabel's treatment in Flora of North America, vol. 25, p. 621, states: "Once known from wet or moist sites in the southwestern deserts from southern California, Nevada, and Utah to western Texas, Imperata brevifolia is currently known only from populations in Grand Canyon National Park. It was last collected outside the park in the early 1970s at a site that is now under Lake Powell. Most collections were made before 1945, in sites that are now used for housing or agriculture." The accompanying map includes Clark and Nye counties in the historic range, along with most of the Mojave Desert and scattered counties in Sonoran and Chihuahuan deserts and on adjacent portions of the Colorado Plateau. Can anyone corroborate these statements, or provide any other new information? Add to the NNPS Endangered, Threatened, or Watch list? Recommend other agency status?
• Meesia triquetra (three-ranked humpmoss) - confirmed to be present in boggy habitats at two localities in the Mount Rose area. Heritage ranks G5 S1, but considered to be a sensitive wetland indicator in the Sierra Nevada. Add to the NNPS Watch or Marginal list? Recommend for addition to the Humboldt-Toiyabe National Forest sensitive species list?
• Opuntia whipplei var. multigeniculata (Blue Diamond cholla) - reported from several large new populations in the La Madre Mountains and elsewhere outside the Blue Diamond Hills by Marc Baker and others. Previously known only from the Blue Diamond Hills. Current Heritage ranks T1 S1, on the State of Nevada list of fully protected species, on the BLM Special Status Species list, and on the NNPS Threatened list. Has the taxonomic identity of these new populations been further studied or confirmed? Volume 4 of Flora of North America treats it as the nothotaxon Cylindropuntia x multigeniculata, putatively a hybrid between C. whipplei and C. echinocarpa. Are any changes in status yet warranted?
• Pinus washoensis (Washoe pine) - Placed on the NNPS Watch List by the 2003 Workshop. David Charlet (2000, 2001) was planning to further investigate the relationship of the Nevada populations to the northern race of Pinus ponderosa var. ponderosa. He still believed they might be distinct at some level and worthy of continued conservation status (see the 2001 comments by David Charlet). A recent DNA study (Patten and Brunsfeld. Madroño 49: 189-192. 2002) confirms a close and perhaps reticulate relationship between the two taxa. Informal observations by Jim Morefield during a family vacation found cones indistinguishable from those of Mt. Rose P. washoensis just east of Lowman in central Idaho, and some cones intermediate to "typical" P. ponderosa at Superior, Montana, suggesting possible varietal status under the latter. Any status changes or recommendations?
• Polygonaceae sp. nov. (Lunar Crater buckwheat) - James Reveal will soon be placing Eriogonum puberulum in a separate genus named for the late John Thomas Howell, who had long noted its distinctiveness within Eriogonum. At the same time, the plants from black cinder soils in a small area of northeastern Nye County, Nevada, near US Highway 6 northeast of Lunar Crater, formerly included in Eriogonum puberulum, are being recognized as a separate endemic species. How confident are we in the taxonomy (distinctiveness) of this species? Could it have been missed in other places, or is it likely restricted to this area? Add to the NNPS Watch or Threatened List? Recommend for addition to the BLM sensitive species list?
• Senecio pattersonensis (Mono ragwort) - Added to the NNPS Watch List by the 2003 Workshop. Known in Nevada from a single specimen southeast of the summit of Mt. Grant in the Wassuk Range. Heritage ranks G2 S1. Recommend for the BLM sensitive list?
• Spiranthes diluvialis (Ute ladies'-tresses) - The U.S. Fish and Wildlife Service is considering a petition to de-list this threatened species based mainly on the much larger geographic range discovered since it was listed in 1992. The species is now known from small populations in Utah, Colorado, Wyoming, Nebraska, Montana, Idaho, and Washington. In Nevada it is known only from a single historic population in the outflow of Panaca Spring in Lincoln County, where the habitat may still persist but is inaccessible for surveys due to landowner restrictions. The species is on the State of Nevada's list of fully protected species, and is on the NNPS Threatened list. Any recommendations for status change at this time?

• Astragalus pulsiferae var. coronensis (Rams Horn Spring milkvetch) - segregated from var. suksdorfii by Welsh et al. (2002), and now considered endemic to eastern Plumas, Lassen, and Modoc counties, California, and northern Washoe County, Nevada. Already on NNPS Watch List (as var. suksdorfii). New Heritage ranks: T2?, S1. Suggested at the 2003 Workshop for possible transfer to the NNPS M-list. Any further information or recommendations?
• Dermatocarpon luridum (stream stippleback lichen) - just added to BLM's sensitive species list for Nevada. This aquatic lichen is known in Nevada only from a spring in Red Rock Canyon National Conservation Area of the Spring Mountains, Clark County. The D. luridum population in Nevada appears to be a relictual disjunct with the species core range in North America being located in the northern Rockies and eastward. A scattering of sites are reported in the southern Rockies, 4 sites in Arizona, 15 sites in Washington and Oregon, and about 7 sites in California including Alpine County. The Spring Mountains site is certainly the most arid site known for the species in North America. The species is thought to be vulnerable to changes in water chemistry, clarity, and temperature. In Nevada, recreation and grazing both by livestock and wild horse or burrow constitute significant threats. Add to NNPS Watch or Marginal list?
• Echinocereus engelmannii var. armatus (armored hedgehog cactus) - known from 5 sites, two east of Victorville, San Bernardino Co., CA, one in the Argus Range of Inyo County, CA, and two from the Pahute Mesa area on the Nevada Test Site of Nye Co., all in granite boulder areas. Recognized by Benson (1982) but not in Jepson Manual treatments (1993, 2002). Its taxonomy has been questioned because of its spotty distribution amidst other variants of Echinocereus engelmannii, and it is not recognized in Volume 4 of Flora of North America. Heritage ranks T2?Q, S1?. Add to NNPS Watch List?
• Eriogonum heermannii var. floccosum (Clark Mountain buckwheat) - until recently thought to be endemic to the desert mountains of eastern San Bernardino and southern Inyo counties, California, where it is on CNPS List 4, R-E-D code 1-1-3, heritage ranks G5T3, S3.3. It is now known from two occurrences in the adjacent McCullough Mountains of southern Clark County, Nevada, and from adjacent northwest Arizona and disjunct in central Arizona. Does this have the potential to be much more widespread in southern Nevada? Add to the NNPS Watch List or Marginal List? Recommend for BLM sensitive species list?
• Eriogonum mensicola (Pinyon Mesa buckwheat) - This distinctive taxon has until recently been synonymized with, or treated as a variety of, Eriogonum panamintense. On the basis of this synonymy, CNPS considered it too common to warrant conservation concern. As a distinct species, it is known only from infrequent encounters in the Panamint, Inyo, and Coso ranges of California, and disjunctly from about 3 occurrences in the Sheep Range of Clark County, Nevada. How rare or common is this species in California? Add to the NNPS Watch or Marginal List?
• Eriogonum ovalifolium var. eximium (Slide Mountain buckwheat, brown-margined buckwheat) - apparently endemic to the Carson Range of Douglas and Washoe counties, Carson City, and adjacent California in the Jobs Peak area. On CNPS List 4, R-E-D code 1-1-1. Heritage ranks G5T3, S3.2 in California though apparently restricted to a very small area, S2S3 in Nevada where known from about 20 collections. Doesn't seem to belong on the NNPS Marginal List, since the bulk of its range is in Nevada. Occurs in an area of increasing recreational and residential uses. Add to NNPS Watch List? Recommend for Forest Service sensitive species lists (LTBMU and HTNF)?
• Eriogonum pharnaceoides var. cervinum (Deer Lodge buckwheat) - In his draft treatment for Flora of North America north of Mexico (posted January 2003), Reveal states that the variety is "rare to infrequent in its limited range of eastern Lincoln Co., Nevada, southwestern Iron and western Washington counties, Utah, and northeastern Mohave Co., Arizona. As such, the variant is totally disjunct from the typical expression." In Nevada the variety is known from 4 collections representing 3 distinct occurrences, and the species appears to be about equally rare in adjacent Utah and Arizona, suggesting a heritage rank of G4G5T2. Its habitat, "sandy or gravelly slopes in sagebrush and mountain mahogany communities, and in oak, pinyon-juniper and montane conifer woodlands, (1400-)1800-2300 m," is not highly vulnerable. Add to the NNPS Watch List? Recommend for addition to the BLM Sensitive Species List?
• Eriogonum umbellatum var. vernum (spring sulphurflower) - known from 23 collections representing fewer than 20 occurrences in the Pahute Mesa region of south-central Nye County north to near US Highway 6. ENDEMIC to Nevada, habitat "sandy to gravelly, often volcanic flats and slopes in saltbush and sagebrush communities; 1400-1950(-2200) m". Widespread and secure enough not to warrant conservation concern? Do more than 20 occurrences likely exist? Add to NNPS Watch List?
• Goodmania luteola (yellow spinecape) - collected from only one site in Nevada, at Alkali Lake in Mineral County, this monotypic genus is otherwise known from adjacent Mono County, the southern San Joaquin Valley, and the northwestern edge of the Mojave Desert in California. According to Reveal, the species is rapidly becoming rare and frequently locally extirpated throughout its range. Heritage ranks G3, S1 in Nevada, S3.2 in California. On CNPS List 4, R-E-D code 1-2-2. Add to the NNPS Watch or Marginal list? Recommend for addition to the Humboldt-Toiyabe National Forest sensitive species list?
• Hackelia brevicula (Poison Canyon stickseed) - one collection reported from Nevada by Dean Taylor (Taylor 15236, 18 July 1995) in the White Mountains, Queen Canyon near Albert Mine, 8200 ft. Otherwise endemic to the White Mountains in California. Identity may be questionable, as this species is difficult to distinguish from H. floribunda, also reported from the same general vicinity. On CNPS List 3 (needing more information), R-E-D ?-1-3. Heritage ranks G2Q, S1. On Inyo National Forest Watch List. Any need to add to NNPS Watch List yet?
• Solorina spongiosa (fringed chocolate chip lichen) - a relictual, disjunct population of this was recently discovered in the Spring Mountains, Clark County, that would shock the cortex off most vascular plant biogeographers. This lichen's core range runs from the Arctic Ocean down the Canadian Rockies to the Yellowstone area and Cascades to Washington State, with two previously known disjunct populations in central Colorado and near the New Mexico/Texas boarder. The Nevada population is more than 800 km from the nearest (Colorado) population. Two locations for the species are known in the Spring Mountains, both adjacent to water sources with high recreational impact. Add to NNPS Watch or Marginal list? Recommend for addition to the Humboldt-Toiyabe National Forest sensitive list? 
• Taxa recommended for addition or transfer to the NNPS "M" list (Marginal and/or disjunct occurrence in Nevada, more widespread elsewhere).

• Astragalus johannis-howellii - previously on NNPS Dropped List, heritage ranks G2, S1.
• Brickellia knappiana - previously on NNPS Dropped List, heritage ranks G2, S1; considered a hybrid by CNPS.
• Chorizanthe corrugata - known from about 5 collections in the Lake Mead / Colorado River corridor, otherwise much more common (G5) in CA, AZ, and northwest Mexico.
• Cryptantha flaccida - known only from the Dogskin Mountain and Red Rock area of extreme western Washoe County, otherwise common from Washington to California and Idaho.
• Eriogonum contiguum - previously on NNPS Dropped List, heritage ranks G2, S1.
• Eriogonum elatum var. villosum - known from about 5 occurrences in the Lake Tahoe basin and Verdi area, otherwise at least somewhat more common (T2-T4) in northern CA and southern OR.
• Eriogonum gracilipes - known from 3 collections in the Boundary Peak area of Esmeralda County, otherwise more abundant (G3-G4, though fairly limited in range) in the adjacent White Mountains and Sierra Nevada of CA. Considered for listing by CNPS, but rejected because too common there.
• Eriogonum kennedyi var. purpusii - known from a single collection on the northwest slope of the White Mountains in Esmeralda County, otherwise somewhat more common (T2-T4) along the east foot of the Sierra Nevada and adjacent Owens Valley in CA.
• Eriogonum latens - known from 4 collections in the White Mountains of Esmeralda County, north of Boundary Peak, otherwise somewhat more common (G3) in the northern White Mountains and eastern Sierra Nevada of CA. Considered for listing by CNPS, but rejected because too common there.
• Eriogonum nudum var. pubiflorum - known from 4 collections in northern Washoe and adjacent Humboldt counties, otherwise common (T5) in northern CA and southern OR.
• Eriogonum ovalifolium var. depressum - known from a single collection near the head of Jack Creek in the Independence Range of north-central Elko County, otherwise widespread and common through eastern OR, ID, western MT, western WY, and southwestern AB.
• Eriogonum plumatella - known from fewer than 6 collections in Clark County, otherwise widespread though infrequently encountered (G3G4) throughout the Mojave Desert of southeastern CA and western AZ.
• Eriogonum saxatile - known from a few occurrences in Esmeralda and western Nye counties, otherwise more widespread (G3G4) in the drier mountains of southern CA.
• Eriogonum umbellatum var. furcosum - known from a single collection near Verdi in Washoe County, otherwise common (T4) throughout the Sierra Nevada of CA.
• Eriogonum wrightii var. wrightii - known mainly from the southern McCullough Mountains of southern Clark County, otherwise widespread and common (T5) from southeast CA to southwest UT and west TX.
• Hackelia cusickii - previously on NNPS Dropped List, heritage ranks G5?, S1.
• Lathyrus laetivirens - previously on NNPS Dropped List, heritage ranks G4, S1.
• Machaeranthera arida -  previously on NNPS Dropped List (as M. ammophila), heritage ranks G3G4, S1.
• Penstemon patricus - previously on NNPS Dropped List, heritage ranks G2Q, S1.
• Pilostyles thurberi - previously on NNPS Dropped List, heritage ranks G5, S1.
• Primula cusickiana var. cusickiana - known from a single specimen collected in the "Nevada Strip" area on BLM lands north of Jarbidge in 1997.  Heritage ranks G4T4, S1.
• Sidalcea candida var. glabrata - previously on NNPS Dropped List (as S. candida), heritage ranks G4T4, S1.
• Tonestus eximius - previously on NNPS Dropped List, heritage ranks G3, S1.
• Trifolium lemmonii - previously on NNPS Dropped List, heritage ranks G4?, S1.

• Agastache cusickii - previously on NNPS Dropped List, heritage ranks G3G4, S2.
• Arabis dispar - previously on NNPS Dropped List, heritage ranks G3, S1S2.
• Artemisia packardiae - previously on NNPS Dropped List, heritage ranks G3, S2.
• Artemisia papposa - previously on NNPS Dropped List, heritage ranks G4, S2.
• Astragalus alvordensis - previously on NNPS Dropped List, heritage ranks G4, S2.
• Astragalus lentiginosus var. chartaceus - previously on NNPS Dropped List, heritage ranks T3T4, S2.
• Cymopterus corrugatus - previously on NNPS Dropped List, heritage ranks G4, S2.
• Cymopterus nivalis - previously on NNPS Dropped List, heritage ranks G5, S1 (but should be S2).
• Ephedra funerea - previously on NNPS Dropped List, heritage ranks G3, S2.
• Eriogonum darrovii - previously on NNPS Dropped List, heritage ranks G2, S1 (but should probably be G3, S2).
• Eriogonum davidsonii - known mainly from the Virgin Mountains northward in eastern Clark County, otherwise widespread and common (G5) in southern CA, northwest AZ, southwest UT, and Baja California.
• Eriogonum nudum var. oblongifolium - known from fewer than a dozen collections along the east slope of the Carson Range and on Peavine Mountain in Douglas and Washoe counties and probably in Carson City, otherwise widespread and common (T5) in northern CA and southern OR.
• Eriogonum ochrocephalum var. calcareum - known from at least 6 sites in Lyon, Storey, and southern Washoe counties, particularly in the Virginia Range, otherwise disjunct from its larger range (formerly T3, now probably T4) on the Snake River plains of southern ID and southeastern OR, previously confused with var. ochrocephalum in NV.
• Eriogonum panamintense (excluding E. mensicola) - known from less than 15 collections in western Esmeralda and southwestern Nye counties and in the Spring Mountains of western Clark County, otherwise somewhat more widespread (G3G4) in eastern Inyo and San Bernardino counties, CA, to Mojave County, AZ.
• Eriogonum rixfordii - endemic to the Death Valley area of southwestern Nye County in the Grapevine Mountains and Beatty area, and adjacent Inyo County, CA, where it is apparently somewhat more common (G2G3), but rarely abundant and only occasionally seen. Considered for listing by CNPS, but rejected because too common there.
• Eriogonum umbellatum var. desereticum - known from about 10 collections, mainly in the Jarbidge Mountains with outliers in the Ruby and Independence mountains, of Elko County, otherwise fairly common in the high mountains of southern ID and northern UT.
• Eriogonum umbellatum var. porteri - known from about a dozen collections mainly in the Ruby - East Humboldt ranges of Elko County, with outliers in the Toiyabe and Toquima ranges of Lander and Nye counties, otherwise widespread across UT and western CO.
• Fimbristylis thermalis - previously on NNPS Dropped List (lumped under F. spadicea), heritage ranks G4, S2.
• Hackelia ophiobia - previously on NNPS Dropped List, heritage ranks G3, S2.
• Hackelia sharsmithii - previously on NNPS Dropped List, heritage ranks G3, S2.
• Lupinus holmgrenianus - previously on NNPS Dropped List, heritage ranks G3?Q, S2.
• Mertensia cusickii - previously on NNPS Dropped List, heritage ranks G4?, S2.
• Peteria thompsonae - previously on NNPS Dropped List, heritage ranks G4, S2.
• Phacelia anelsonii - previously on NNPS Dropped List, heritage ranks G2G3, S1S2.
• Thelypodium laxiflorum - previously on NNPS Dropped List, heritage ranks G4, S2.

• Bowlesia incana - known from Newberry Mountains only? (offered by Elizabeth Powell, April 2002)
• Draba ventosa - reported by Kartesz from the Ruby Mountains, of conservation concern in some Rocky Mountain states. Recognized only from Wyoming, Utah, and Colorado by Rollins (1993), but considered to occur additionally in Montana, Idaho, Washington, and Canada. Left open by 2003 Workshop pending confirmation of its presence in Nevada. Specimen in the RENO herbarium annotated to D. sphaeroides by Kartesz. Any new information? Drop from further consideration?
• Eriogonum salicornioides - reported from a very imprecisely located collection by Percy Train in northern Humboldt County, and has not been relocated there after some effort.
• Hesperocallis undulata - known from Newberry Mountains and south to Calif. only? (offered by Elizabeth Powell, April 2002)
• Hordeum californicum - reported from one location in Little Valley, southwest Washoe County, by Kartesz (1987).  Specimen could not be located in the RENO herbarium. Otherwise fairly widespread in California. Any additional information? Drop from further consideration?
• Keckiella antirrhinoides - known from Newberry Mountains only? (offered by Elizabeth Powell, April 2002)
• Lycium parishii - known from Newberry Mountains area only? (offered by Elizabeth Powell, April 2002)
• Mentzelia jonesii - Newberry Mountains only? (offered by Elizabeth Powell, April 2002)
• Nolina bigelovii - known from Newberry Mountains area only? (offered by Elizabeth Powell, April 2002)
• Physaria newberryi - The New York Botanical Garden on-line specimen catalog lists one 1984 collection from far southeastern Nevada, Kartesz's 1987 Flora of Nevada describes it as "known throughout southern and southeastern Nevada," but Rollins (1993) mentions only New Mexico, Arizona, and Utah.
• Stillingia linearifolia - known from Newberry Mountains only? (offered by Elizabeth Powell, April 2002)
• Tetracoccus hallii - known from Newberry Mountains only? (offered by Elizabeth Powell, April 2002)

Cirsium hallii - previously on the NNPS Dropped List, a G5 known only from Oregon.

Draba cusickii - previously on the NNPS Dropped List, now considered endemic to Steens Mountain in Oregon.

Helianthus anomalus - previously on the NNPS Dropped List, previously confused with H. deserticola and now considered restricted to Utah and Arizona.

9. Nevada Native Plant Society (http://heritage.nv.gov/nnps.htm) regular meeting, 7:00-9:00 pm. Workshop participant Jan Nachlinger of The Nature Conservancy will be speaking on Desert Islands: Highlights of Two Decades of Botanical Explorations in Nevada. Directions available at the Workshop.

(last updated 29 March 2004) 

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