Taxon Report
Dudleya cymosa (Lem.) Britt. & Rose ssp. crebrifolia K. Nakai & VeritySan Gabriel River dudleya |
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Species Description:
Dudleya cymosa ssp. crebrifolia, commonly known as San Gabriel River dudleya, is a perennial herb in the Crassulaceae that is found only in California. It occurs within Chaparral, growing at elevations from 275 to 457 meters. Dudleya cymosa ssp. crebrifolia is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.
Classification
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Scientific Name: |
Dudleya cymosa (Lem.) Britt. & Rose ssp. crebrifolia K. Nakai & Verity |
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Common Name: |
San Gabriel River dudleya |
| Family: | Crassulaceae |
| Element Code: | PDCRA040A8 |
| USDA Plants Symbol: | DUCYC2 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Apr-Jul | Apr-Jul |
| Elevation: | 275-457 (900-1500) |
| General Habitats: | Chaparral |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G5T2 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 6 |
| Element Occurrence Ranks: | |
| Excellent (A) | 2 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 4 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Los Angeles (LAX) | |
| Quads: Name (Quad Code) | |
| Azusa (3411728), Crystal Lake (3411737) | |
Threat List Data from the CNDDB
| Threat List Total: | 2 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 1 | 17 % | |
| Erosion/runoff | 1 | 16% |
| Road/trail construction/maint. | 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 21 January 2025].