Home/Species/ Salmon River Mountains Penstemon

Penstemon salmonensis

N.H. Holmgren

Salmon River Mountains Penstemon

G2Imperiled Found in 1 roadless area NatureServe Explorer →

G2ImperiledGlobal Rank

MediumThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.1135863

Element CodePDSCR1L860

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single state or province

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderPlantaginales

FamilyPlantaginaceae

GenusPenstemon

Concept Reference

Holmgren, N.H. 2018. Revision of the Serrulati species of Penstemon section Saccanthera subsection Serrulati. Brittonia 70(1): 115-139.

Taxonomic Comments

A new Penstemon species, Penstemon salmonensis, known only from central Idaho in the Salmon River Mountains, is recognized by Holmgren (2018).

Conservation Status

Rank MethodLegacy Rank calculation - Biotics v1

Review Date2019-12-18

Change Date2019-12-18

Edition Date2019-12-18

Edition AuthorsTomaino, A. (2019)

Threat ImpactMedium

Range Extent1000-5000 square km (about 400-2000 square miles)

Number of Occurrences6 - 20

Rank Reasons

Endemic to central Idaho in the Salmon River Mountains. Known from approximately 18 locations. Threats include invasive plants.

Range Extent Comments

Known only from the Salmon River Mountains in central Idaho, ranging from the southeast corner of Idaho County and northwest corner of Valley County, to western Lemhi County and northern Custer County (Holmgren 2018).

Occurrences Comments

Known from approximately 18 locations (Idaho Native Plant Society Southern Idaho Rare Plant Working Group 2018).

Threat Impact Comments

Invasive species such as spotted knapweed and/or hoary alyssum are a current threat (USFS 2018). Roads, trails, and recreation may also be a current threat to the species (USFS 2018).

Ecology & Habitat

Habitat

Habitat is rocky places, such as cliff crevices and on rocky slopes and talus, 930–1755 m (3045–5755 ft) elevation (Holmgren 2018). The surrounding community is ponderosa pine, ponderosa pine/Douglas-fir, or sagebrush (USFS 2018).

Terrestrial Habitats

Forest/WoodlandShrubland/chaparralBare rock/talus/screeCliff

Other Nations (1)

United StatesN2

Province	Rank	Native
Idaho	S2	Yes

Threat Assessments

Threat	Scope	Severity	Timing
4 - Transportation & service corridors	Small (1-10%)	Moderate - slight	—
4.1 - Roads & railroads	Small (1-10%)	Moderate - slight	—
6 - Human intrusions & disturbance	Small (1-10%)	Moderate - slight	—
6.1 - Recreational activities	Small (1-10%)	Moderate - slight	—
8 - Invasive & other problematic species, genes & diseases	Large (31-70%)	Moderate or 11-30% pop. decline	—
8.1 - Invasive non-native/alien species/diseases	Large (31-70%)	Moderate or 11-30% pop. decline	—

Plant Characteristics

Economic Value (Genus)No

Roadless Areas (1)

Montana (1)

Area	Forest	Acres
Allan Mountain (01946)	Bitterroot National Forest	104,184

References (2)

Holmgren, N.H. 2018. Revision of the Serrulati species of <i>Penstemon </i>section Saccanthera subsection Serrulati. Brittonia 70(1): 115-139.
U.S. Forest Service (USFS). 2018. Forest review results for <i>Penstemon salmonensis </i>in Salmon–Challis National Forest.

Penstemon salmonensis

Habitat

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