Taxon Report

Penstemon thompsoniae (Gray) Rydb.

Thompson's beardtongue

Print Report

Classification


Scientific Name:	Penstemon thompsoniae (Gray) Rydb.
Common Name:	Thompson's beardtongue
Family:	Plantaginaceae
Element Code:	PDSCR1L670
USDA Plants Symbol:	PETH2
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: May-Jun	May-Jun
Elevation:	1500-2700 (4920-8860)
General Habitats:	Pinyon and juniper woodland
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.3
Global Rank:	G4
State Rank:	S1
State List:	None
Fed List:	None
Other Status:	SB_CalBG/RSABG
CRPR Changes:	changed from 2.3 to 2B.3 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	6
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	6

Location


California Endemic: False
California Counties and Islands: Name (Code)
San Bernardino (SBD)
Quads: Name (Quad Code)
Clark Mtn. (3511555), Ivanpah (3511533), Pinto Valley (3511523)

Threat List Data from the CNDDB


Threat List Total:	1
EOs with Threat Listed:	Total EOs	% of EOs
	1	17 %
Recreational use (non-ORV)	1	16%

Notes



See Synoptical Flora of North America 2(1):269 (1878) for original description, Bulletin of the Torrey Botanical Club 36(1):690 (1909) for revised nomenclature, and Aliso 2(2):194-195 (1950) for species information.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 5 January 2025].