Taxon Report
Lathyrus sulphureus Gray var. argillaceus Jeps.dubious pea |
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Taxon Summary
Lathyrus sulphureus var. argillaceus, commonly known as dubious pea, is a perennial herb in the Fabaceae that is found only in California. It occurs within Cismontane woodland, Lower montane coniferous forest, and Upper montane coniferous forest, growing at elevations from 150 to 930 meters. Lathyrus sulphureus var. argillaceus is ranked 3, Plants About Which We Need More Information, A Review List.Classification
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Scientific Name: |
Lathyrus sulphureus Gray var. argillaceus Jeps. |
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Common Name: |
dubious pea |
| Family: | Fabaceae |
| Element Code: | PDFAB25101 |
| USDA Plants Symbol: | LASUA |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Apr-May | Apr-May |
| Elevation: | 150-930 (490-3050) |
| General Habitats: | Cismontane woodland, Lower montane coniferous forest, Upper montane coniferous forest |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 3 |
| Global Rank: | G5T1T2Q |
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State Rank: |
S1S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 7 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 1 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 6 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Amador (AMA), Calaveras (CAL), El Dorado (ELD), Nevada (NEV)?, Placer (PLA), Shasta (SHA), Tehama (TEH) | |
| Quads: Name (Quad Code) | |
| Auburn (3812181), Enterprise (4012253), Grass Valley (3912121), Lake Combie (3912111)?, Nevada City (3912131), North Bloomfield (3912038), Rail Road Flat (3812035), Redding (4012254), Rosewood (4012235), Rough And Ready (3912122)?, West Point (3812045) | |
Threat List Data from the CNDDB
| Threat List Total: | 3 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 2 | 29 % | |
| Foot traffic/trampling | 2 | 28% |
| Grazing | 1 | 14% |
| Road/trail construction/maint. | 1 | 14% |
Notes
| Move to List 1B? Location, rarity, and endangerment information needed. Taxonomy poorly understood; needs further study. Possibly threatened by development and road maintenance. A synonym of L. sulphureus in TJM (1993) and TJM 2. See Flora of California 2(1):393 (1936) by W.L. Jepson for original description. |
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Threats: |
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Taxonomy: |
Selected References
| CRPR List Deletion on 2013-02-01 |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 18 April 2025].