Taxon Report

Penstemon fruticiformis Cov. var. amargosae (Keck) N. Holmgren

Amargosa beardtongue

Print Report


Steve Matson 2017

Taxon Summary

Penstemon fruticiformis var. amargosae, commonly known as Amargosa beardtongue, is a perennial herb in the Plantaginaceae that is found in California and elsewhere. It occurs within Mojavean desert scrub, growing at elevations from 850 to 1400 meters. Penstemon fruticiformis var. amargosae is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.


  Classification

Scientific Name:
Penstemon fruticiformis Cov. var. amargosae (Keck) N. Holmgren
Common Name:
Amargosa beardtongue
Family: Plantaginaceae
Element Code: PDSCR1L2F2
USDA Plants Symbol:
Synonyms/Other Names:

Ecology and Life History

Lifeform: perennial herb
Blooming Period: Apr-Jun Apr-Jun
Elevation: 850-1400 (2790-4595)
General Habitats: Mojavean desert scrub
Microhabitat:
Microhabitat Details:

Occurrence Data from the CNDDB

Total Occurrences: 18
Element Occurrence Ranks:
   Excellent (A) 1
   Good (B) 1
   Fair (C) 1
   Poor (D) 0
   None (X) 0
   Unknown (U) 15
California Endemic:  False
California Counties and Islands: Name (Code)
Inyo (INY), San Bernardino (SBD)
Quads: Name (Quad Code)
Ballarat (3611712), Blackwater Mine (3511577), Cactus Peak (3611717), East of Echo Canyon (3611645), Emigrant Pass (3611732), Homewood Canyon (3511784), Horse Thief Springs (3511578), Jackass Canyon (3611755), Last Chance Mtn. (3711736), Nelson Range (3611756), Red Pass Lake Ne (3511643), Sheep Creek Spring (3511653), Tecopa Pass (3511671), Thimble Peak (3611771), West of Shenandoah Peak (3511576)

Threat List Data from the CNDDB

Threat List Total: 7
EOs with Threat Listed: Total EOs % of EOs
3 17 %
Mining 3 16%
ORV activity 2 11%
Recreational use (non-ORV) 1 5%
Vandalism/dumping/litter 1 5%
Non-native animal impacts 1 5%
Non-native plant impacts 1 5%
Grazing 1 5%

Notes

Threatened in NV. See American Midland Naturalist 18:801 (1937) for original description, and Brittonia 44(4):481 (1992) for revised nomenclature.
Threats:
Taxonomy:
Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 13 May 2025].