Taxon Report
Penstemon thompsoniae (Gray) Rydb.Thompson's beardtongue |
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Taxon Summary
Penstemon thompsoniae, commonly known as Thompson's beardtongue, is a perennial herb in the Plantaginaceae that is found in California and elsewhere. It occurs within Pinyon and juniper woodland (gravelly, and carbonate), growing at elevations from 1500 to 2700 meters. Penstemon thompsoniae is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.Classification
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Scientific Name: |
Penstemon thompsoniae (Gray) Rydb. |
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Common Name: |
Thompson's beardtongue |
| Family: | Plantaginaceae |
| Element Code: | PDSCR1L670 |
| USDA Plants Symbol: | PETH2 |
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Synonyms/Other Names: |
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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 |
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State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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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 |
| 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% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 14 November 2025].