Taxon Report
Caulanthus californicus (Wats.) Pays.California jewelflower |
|
Taxon Summary
Caulanthus californicus, commonly known as California jewelflower, is a annual herb in the Brassicaceae that is found only in California. It occurs within Chenopod scrub, Pinyon and juniper woodland, and Valley and foothill grassland, growing at elevations from 61 to 1000 meters. Caulanthus californicus is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.Classification
|
Scientific Name: |
Caulanthus californicus (Wats.) Pays. |
|
Common Name: |
California jewelflower |
| Family: | Brassicaceae |
| Element Code: | PDBRA31010 |
| USDA Plants Symbol: | |
|
Synonyms/Other Names: |
|
Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: Feb-May | Feb-May |
| Elevation: | 61-1000 (200-3280) |
| General Habitats: | Chenopod scrub, Pinyon and juniper woodland, Valley and foothill grassland |
| Microhabitat: | Sandy |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G1 |
|
State Rank: |
S1 |
| State List: | CE |
| Fed List: | FE |
| Other Status: | SB_CalBG/RSABG; SB_SBBG; SB_UCBG |
|
CRPR Changes: |
|
Occurrence Data from the CNDDB
| Total Occurrences: | 67 |
| Element Occurrence Ranks: | |
| Excellent (A) | 8 |
| Good (B) | 22 |
| Fair (C) | 3 |
| Poor (D) | 2 |
| None (X) | 30 |
| Unknown (U) | 2 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Fresno (FRE), Kern (KRN), Kings (KNG)*, San Luis Obispo (SLO), Santa Barbara (SBA), Tulare (TUL)* | |
| Quads: Name (Quad Code) | |
| Antelope Plain (3511967), Arvin (3511827)*, Avenal (3612012)*, Ballinger Canyon (3411984)*, Belridge (3511946)*, Clovis (3611976), Coalinga (3612023)*, Curry Mountain (3612014)*, Cuyama (3411985), Cuyama Peak (3411974)*, Delano East (3511972)*, Delano West (3511973)*, Edison (3511837)*, Elkhorn Hills (3511915), Emigrant Hill (3511968)*, Fox Mountain (3411975), Fresno North (3611977)?*, Fresno South (3611967), Garza Peak (3512082)*, Huron (3612021)*, Kreyenhagen Hills (3612013), La Panza (3512032), La Panza Ranch (3512042), Lost Hills (3511956)*, Lost Hills NE (3511965), Malaga (3611966), Mouth of Kern (3511923), New Cuyama (3411986)*, Painted Rock (3511927)*, Pine Mountain (3511857)*, Pyramid Hills (3512071)*, Richgrove (3511971)*, Rio Bravo Ranch (3511847)*, Rosedale (3511942)*, Sausalito School (3511982)*, Semitropic (3511955), Stevens (3511932), Taft (3511924)*, Tejon Ranch (3511816), Tent Hills (3512072), Tulare (3611923)*, Wells Ranch (3511916) | |
Threat List Data from the CNDDB
| Threat List Total: | 7 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 52 | 78 % | |
| Agriculture | 26 | 38% |
| Grazing | 24 | 35% |
| Development | 11 | 16% |
| Other | 6 | 8% |
| Non-native plant impacts | 3 | 4% |
| Mining | 2 | 2% |
| Insufficient population/stand size | 1 | 1% |
Notes
| Over 35 historical occurrences extirpated; new populations recently discovered. Threatened by agriculture, urbanization, energy development, and grazing, and possibly by non-native plants. Experimental reintroductions have occurred in KRN, SBA, and TUL counties, but all have failed. See Fremontia 16(1):18-19 (1988) for species account. |
|
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 5 February 2025].