Roadless Areas
Home/Species/ Idaho Beardtongue

Penstemon laxus

A. Nels.

Idaho Beardtongue

G2Imperiled Found in 2 roadless areas NatureServe Explorer →
G2ImperiledGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.153302
Element CodePDSCR1L3L0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderPlantaginales
FamilyPlantaginaceae
GenusPenstemon
Concept Reference
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Conservation Status
Rank MethodLegacy Rank calculation - Biotics v1
Review Date2020-01-13
Change Date2020-01-13
Edition Date2020-01-13
Edition AuthorsMacBryde, Bruce (2000), rev. A. Tomaino (2020)
Threat ImpactUnknown
Range Extent5000-20,000 square km (about 2000-8000 square miles)
Number of Occurrences6 - 80
Rank Reasons
Endemic to south-central Idaho north of the Snake River Plain. Possible threats include invasive plants and fire.
Range Extent Comments
Endemic to south-central Idaho, north of the Snake River Plain in Blaine, Boise, Camas, Custer, Elmore, and Lincoln counties (Hitchcock and Cronquist 2018).
Threat Impact Comments
Posisble threats include invasive plants and fire (Idaho Native Plant Society 2011). As of 2020, no new information about threats was found.
Ecology & Habitat

Habitat

Dry sagebrush-grassy slopes, and open woodlands (Pinus ponderosa, Pseudotsuga menziesii) in the foothills to moderate elevations in the mountains (1700-2400 m) (Flora of North America Editorial Committee 2019; Hitchcock and Cronquist 2018; Idaho Native Plant Society 2011). Occurs in the Idaho Batholith region.
Terrestrial Habitats
Forest/WoodlandWoodland - ConiferShrubland/chaparralGrassland/herbaceous
Other Nations (1)
United StatesN2
ProvinceRankNative
IdahoS2Yes
Threat Assessments
ThreatScopeSeverityTiming
1 - Residential & commercial developmentUnknownUnknown—
7 - Natural system modificationsPervasive (71-100%)Unknown—
7.1 - Fire & fire suppressionPervasive (71-100%)Unknown—
8 - Invasive & other problematic species, genes & diseasesLarge (31-70%)Unknown—
8.1 - Invasive non-native/alien species/diseasesLarge (31-70%)Unknown—

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Plant Characteristics
Economic Value (Genus)No
Roadless Areas (2)
Idaho (2)
AreaForestAcres
Pioneer MountainsSalmon-Challis National Forest172,460
Pioneer MountainsSawtooth National Forest119,563
References (9)
  1. Cronquist, A., A.H. Holmgren, N.H. Holmgren, J.L. Reveal, and P.K. Holmgren. 1984. Intermountain Flora: Vascular Plants of the Intermountain West, U.S.A. Vol. 4, Subclass Asteridae (except Asteraceae). New York Botanical Garden, Bronx. 573 pp.
  2. Davis, R.J. 1952. Flora of Idaho. Brigham Young Univ. Press, Provo, UT. 836 pp.
  3. Flora of North America Editorial Committee (FNA). 2019. Flora of North America north of Mexico. Vol. 17: Magnoliophyta: Tetrachondraceae to Orobanchaceae. Oxford Univ. Press, New York. xxiv + 737 pp.
  4. Hitchcock, C.L., A. Cronquist, M. Ownbey, and J.W. Thompson. 1959. Vascular plants of the Pacific Northwest. Part 4: Ericaceae through Campanulaceae, by C.L. Hitchcock, A. Cronquist, and M. Ownbey. Univ. Washington Press, Seattle. 510 pp.
  5. Hitchcock, C.L., and A. Cronquist. 2018. Flora of the Pacific Northwest: An illustrated manual. Edited by D.E. Giblin, B. S. Legler, P.F. Zika, and R. G. Olmstead. 2nd edition. Univ. Washington Press, Seattle. xiii + 822 pp.
  6. Idaho Department of Fish and Game. 2020. Idaho Fish and Wildlife Information System. Online. Available: https://idfg.idaho.gov/species/taxa/list (accessed 2020).
  7. Idaho Native Plant Society. 2011. Idaho Rare Plant Conference. Conservation ranks and rank calculators, ratified October 19, 2011.
  8. Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
  9. Lodewick, R., and K. Lodewick. 1999. Key to the genus Penstemon and its related genera in the tribe Cheloneae including Chelone, Chionophila, Keckiella, Nothochelone and Pennellianthus (Scrophulariaceae). Kenneth and Robin Lodewick, Eugene, Oregon. 136 pp.