THE IDAHO NATIVE PLANT SOCIETY RARE PLANT LIST The Idaho Rare Plant List has three main divisions:
GLOBALLY RARE = Species and varieties or subspecies (taxa) rare throughout their range.
STATE RARE = Taxa rare within the political boundaries of Idaho, but more common elsewhere.
REVIEW = Taxa that may be of conservation concern in Idaho, but which lack sufficient information to base a recommendation regarding their appropriate classification.
Global conservation ranks used to assign taxa to the first two groups are based on a system developed by The Nature Conservancy and used by the Natural Heritage and Conservation Data Center network (NatureServe). Using this one-through-five ranking system, the INPS considers taxa ranked G1-G3 to be GLOBALLY RARE, while those ranked G4 or G5 are assigned to one of the STATE RARE categories.
CONTENTS GLOBALLY RARE SPECIES 1
2002 Status Changes 1
Global Priority 1 2
Global Priority 2 2
Global Priority 3 2
INPS Recommendations to the U.S. Fish and Wildlife Service 3
STATE RARE SPECIES 4
2002 Status Changes 4
Taxa Believed to be Extirpated From Idaho 4
State Priority 1 4
State Priority 2 5
REVIEW SPECIES 7
TAXA DROPPED FROM INPS LIST - 2002 8
GLOBALLY RARE SPECIES
Globally Rare species are assigned to one of four INPS categories: Globally Extinct (GX), Global Priority 1 (G1), Global Priority 2 (G2), or Global Priority 3 (G3). The Global ranks are defined below. In addition, each globally rare species that is not currently listed as Endangered or Threatened under the federal Endangered Species Act receives a Threat Priority rank. This one-through-twelve rank is based on the old U.S. Fish and Wildlife Service (USFWS) Listing Priority criteria explained below. In the past, these rankings have helped the INPS make and prioritize recommendations to the USFWS for the federal Candidate list, as well as other conservation efforts.
DEFINITIONS USFWS Status:
ENDANGERED = taxa in danger of extinction throughout all or a significant portion of their range.
THREATENED = taxa likely to become endangered in the foreseeable future throughout all or a significant portion of their range.
CANDIDATE = taxa for which substantial biological information exists on file to support a proposal to list as Endangered or Threatened, but no proposal has yet been published in the Federal Register.
Global Rank: G = Global rank indicator; denotes rank based on rangewide status.
T = Trinomial rank indicator; denotes rangewide status of variety or subspecies.
X = Considered extinct throughout its range.
1 = Critically imperiled because of extreme rarity or because of some factor of its biology making it especially vulnerable to extinction (typically 5 or fewer occurrences).
2 = Imperiled because of rarity or because of other factors demonstrably making it very vulnerable to extinction (typically 6 to 20 occurrences).
3 = Rare or uncommon, but not imperiled (typically 21 to 100 occurrences).
4 = Not rare and apparently secure, but with cause for long-term concern (usually more than 100 occurrences).
5 = Demonstrably widespread, abundant, and secure.
2002 STATUS CHANGES An asterisk ( * ) preceding a taxon name indicates a change in Status or Threat Priority was made during the 2002 Idaho Rare Plant Conference. A plus mark ( + ) indicates a new taxon added to the Idaho list during the conference.
GLOBAL PRIORITY 1
(global rank & threat priority in parentheses)
ASTRAGALUS CUSICKII VAR. PACKARDIAE (G4/5T1, 3)
BOTRYCHIUM LINEARE (G1 ?)
CAREX ABORIGINUM (G1, 2)
CASTILLEJA CHRISTII (CANDIDATE; G1, 8)
CHRYSOTHAMNUS PARRYI SSP. MONTANUS (G5/T1, 12)
CLADONIA ANDEREGGII (G1, ?) (lichen)
MIMULUS HYMENOPHYLLUS (G1, 11)
MIMULUS AMPLIATUS (G1, 9)
PHACELIA INCONSPICUA (G1, 5)
PHLOX IDAHONIS (G1, 2)
PHYSARIA DIDYMOCARPA VAR. LYRATA (G5/T1, 3)
SPHAEROCARPOS HIANS (G1, ?) (liverwort)
STANLEYA CONFERTIFLORA (G1, 2)
GLOBAL PRIORITY 2
ANTENNARIA ARCUATA (G2, 5)
ASTER JESSICAE (G2, 2)
ASTRAGALUS ANSERINUS (G2, 8)
ASTRAGALUS DIVERSIFOLIUS (G2, 11)
ASTRAGALUS MULFORDIAE (G2, 2)
ASTRAGALUS VEXILLIFLEXUS VAR. NUBILUS (G4/T2, 12)
BOTRYCHIUM PARADOXUM (G2, ?)
CALOCHORTUS MACROCARPUS VAR. MACULOSUS (G5/T2, 3)
CAREX PARRYANA SPP. IDAHOA (G5/T2, 9)
CLADONIA LUTEOALBA (G2, 8) (lichen)
*COLLOMIA DEBILIS VAR. CAMPORUM (G5/T3, 12) (from Global Priority 3)
CREPIS BAKERI SSP. IDAHOENSIS (G4/T2, 3)
CYMOPTERUS ACAULIS VAR. GREELEYORUM (G5/T2, 12)
DERMATOCARPON LORENZIANUM (G2, 11) (lichen)
DOUGLASIA IDAHOENSIS (G2, 11)
DRABA TRICHOCARPA (G2, 11)
ERIOGONUM CAPISTRATUM VAR. WELSHII (G4/T2, 9)
*ERIOGONUM MELEDONUM (G2, 11) (from Global Priority 1)
ERIOGONUM SHOCKLEYI VAR. PACKARDIAE (G5/T2, 9)
GRIMMIA BRITTONIAE (G2, 11) (moss)
HAPLOPAPPUS LIATRIFORMIS (G2, 2)
HOWELLIA AQUATILIS (THREATENED; G2)
LEPIDIUM PAPILLIFERUM (CANDIDATE; G2, 2)
LEPTODACTYLON GLABRUM (G2, 11)
LEPTODACTYLON PUNGENS SSP. HAZELIAE (G5/T2, 12)
LOMATIUM PACKARDIAE (G2, 8)
MENTZELIA MOLLIS (G2, 2)
MIRABILIS MACFARLANEI (THREATENED; G2)
MUSINEON LINEARE (G2, 11)
ORTHOTRICHUM HOLZINGERI (G2, ?) (moss)
PENSTEMON COMPACTUS (G2, 8)
PENSTEMON IDAHOENSIS (G2, 11)
POA ABREVIATA SPP. MARSHII (G5/T2, 12)
*PRIMULA ALCALINA (G2, 8) (from Global Priority 1)
RUBUS BARTONIANUS (G2, 8)
*SAXIFRAGA BRYOPHORA VAR. TOBIASIAE (G5/T1, 6) (from Global Priority 1)
SILENE SPALDINGII (THREATENED; G2)
SPIRANTHES DILUVIALIS (THREATENED; G2)
TEXOSPORIUM SANCTI-JACOBI (G2, 1) (lichen)
TRIFOLIUM PLUMOSUM VAR. AMPLIFOLIUM (G4/T2, 6)
XANTHOPARMELIA IDAHOENSIS (G2, 8) (lichen)
GLOBAL PRIORITY 3
*ALLIUM AASEAE (G3, 8) (threat rank formerly 11)
ALLIUM MADIDUM (G3, 8)
ALLIUM TOLMIEI VAR. PERSIMILE (G4/T3, 12)
ASTRAGALUS AMBLYTROPIS (G3, 11)
ASTRAGALUS AMNIS-AMISSI (G3, 11)
ASTRAGALUS AQUILONIUS (G3, 5)
ASTRAGALUS ATRATUS VAR. INSEPTUS (G4/T3, 12)
ASTRAGALUS JEJUNUS VAR. JEJUNUS (G3/T3, 9)
ASTRAGALUS ONICIFORMIS (G3, 11)
ASTRAGALUS PAYSONII (G3, 11)
ASTRAGALUS STERILIS (G3, 11)
ASTRAGALUS YODER WILLIAMSII (G3, 11)
BOTRYCHIUM ASCENDENS (G2G3, 8)
BOTRYCHIUM CAMPESTRE (G3, 5)
BOTRYCHIUM CRENULATUM (G3, 11)
BOTRYCHIUM MONTANUM (G3, 8)
BOTRYCHIUM PEDUNCULOSUM (G2G3, 5)
BRYUM CALOBRYOIDES (G3, 2) (moss)
CALAMAGROSTIS TWEEDYI (G3, 8)
CALOCHORTUS NITIDUS (G3, 8)
CAMISSONIA PALMERI (G3, 8)
CARDAMINE CONSTANCEI (G3, 8)
CASTILLEJA PULCHELLA (G3, 11)
CHAENACTIS CUSICKII (G3, 8)
CIRSIUM BREVIFOLIUM (G3, 5)
GLOBAL PRIORITY 3 continued…
COLLEMA CURTISPORUM (G3, 11) (lichen)
CORYDALIS CASEANA VAR. HASTATA (G4/T3, 12)
CRYPTANTHA CAESPITOSA (G3, 2)
CYMOPTERUS DAVISII (G3, 11)
CYMOPTERUS DOUGLASSII (G3, 11)
DASYNOTUS DAUBENMIREI (G3, 10)
ERIGERON SALMONENSIS (G3, 11)
ERIOGONUM OCHROCEPHALUM CALCAREUM (G4/T3, 12)
GRINDELIA HOWELLII (G3, 5)
HACKELIA CRONQUISTII (G3, 11)
HACKELIA DAVISII (G3, 11)
HACKELIA OPHIOBIA (G3, 11)
HAPLOPAPPUS HIRTUS VAR. SONCHIFOLIUS (G4/T3, 6)
HAPLOPAPPUS INSECTICRURIS (G3, 11)
HAPLOPAPPUS RADIATUS (G3, 11)
LEPIDIUM DAVISII (G3, 11)
LESQUERELLA MULTICEPS (G3, 11)
LESQUERELLA PAYSONII (G3, 11)
LOMATIUM SALMONIFLORUM (G3, 8)
MIMULUS PATULUS (G3, 2)
OENOTHERA PSAMMOPHILA (G3, 8)
OXYTROPIS BESSEYI VAR. SALMONENSIS (G5/T3, 12)
PENSTEMON LEMHIENSIS (G3, 11)
PHACELIA LUTEA VAR. CALVA (G3, 11)
PHACELIA MINUTISSIMA (G3, 11)
SCIRPUS ROLLANDII (G3, 8)
(=SCIRPUS PUMILUS SSP. ROLLANDII)
SULLIVANTIA HAPEMANII VAR. HAPEMANII (G3/T3, 12)
SYNTHYRIS PLATYCARPA (G3, 11)
TAUSCHIA TENUISSIMA (G3, 11)
THELYPODIUM REPANDUM (G3, 11)
THLASPI IDAHOENSE VAR. AILEENIAE (G4/T3, 12)
TRIFOLIUM DOUGLASII (G3, 2)
TRIFOLIUM OWYHEENSE (G2G3, 2)
WALDSTEINIA IDAHOENSIS (G3, 11)
INPS RECOMMENDATIONS TO THE U.S. FISH AND WILDLIFE SERVICE
INPS suggests the following species have a high priority for field investigations or monitoring to acquire distribution, abundance, threat, and other conservation information.
ASTRAGALUS ANSERINUS: INPS recommends USFWS support a more intensive monitoring program for this species.
CAREX ABORIGINUM: INPS recommends USFWS support additional field surveys and establishment of a monitoring program.
CASTILLEJA CHRISTII: INPS recommends USFWS support monitoring of this species.
TEXOSPORIUM SANCTI-JACOBI: INPS recommends USFWS support additional field surveys for this species.
INPS will pursue conservation actions regarding the following species of high conservation concern.
ASTER JESSICAE: INPS committee will assemble information for a listing package and submit to USFWS.
ASTRAGALUS MULFORDIAE: INPS committee will assemble information for a listing package and submit to USFWS.
HAPLOPAPPUS LIATRIFORMIS: INPS committee will assemble information for a listing package and submit to USFWS.
STATE RARE SPECIES
State Rare species are assigned to one of five categories: Possibly Extirpated, State Priority 1, State Priority 2, Sensitive, or Monitor.
DEFINITIONS Possibly Extirpated = Taxa known in Idaho only from historical (pre-1920) records or otherwise considered extirpated from the state.
State Priority 1 = Taxa in danger of becoming extinct or extirpated from Idaho in the foreseeable future if identifiable factors contributing to their decline continue to operate. These are taxa whose populations are present only at critically low levels or whose habitats have been degraded or depleted to a significant degree.
State Priority 2 = Taxa likely to be classified as Priority 1 within the foreseeable future in Idaho, if factors contributing to their population decline or habitat degradation or loss continue.
Sensitive = Taxa with small populations or localized distributions within Idaho that presently do not meet the criteria for classification as Priority 1 or 2, but whose populations and habitats may be jeopardized without active management or removal of threats.
Monitor = Taxa common within a limited range in Idaho, as well as those which are uncommon, but have no identifiable threats (e.g., certain alpine taxa).
2002 STATUS CHANGES An asterisk ( * ) preceding a taxon name indicates a change in status was made during the 2002 conference. A plus mark ( + ) indicates a new taxon added to the Idaho list during the conference.
TAXA BELIEVED TO BE EXTIRPATED FROM IDAHO
PAPAVER RADICATUM VAR. KLUANENSE (=PAPAVER KLUANENSE)