Taxon Report
Caulanthus lemmonii S. WatsonLemmon's jewelflower |
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Species Description:
Caulanthus lemmonii, commonly known as Lemmon's jewelflower, is a annual herb in the Brassicaceae that is found only in California. It occurs within Pinyon and juniper woodland, and Valley and foothill grassland, growing at elevations from 80 to 1580 meters. Caulanthus lemmonii is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.
Classification
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Scientific Name: |
Caulanthus lemmonii S. Watson |
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Common Name: |
Lemmon's jewelflower |
| Family: | Brassicaceae |
| Element Code: | PDBRA0M0E0 |
| USDA Plants Symbol: | CALE25 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: Feb-May | Feb-May |
| Elevation: | 80-1580 (260-5185) |
| General Habitats: | Pinyon and juniper woodland, Valley and foothill grassland |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G3 |
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State Rank: |
S3 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S; SB_SBBG; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 91 |
| Element Occurrence Ranks: | |
| Excellent (A) | 7 |
| Good (B) | 8 |
| Fair (C) | 2 |
| Poor (D) | 1 |
| None (X) | 0 |
| Unknown (U) | 73 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Alameda (ALA)*, Fresno (FRE), Kern (KRN), Kings (KNG), Merced (MER), Monterey (MNT), San Joaquin (SJQ), San Luis Obispo (SLO), Santa Barbara (SBA), Stanislaus (STA), Ventura (VEN) | |
| Quads: Name (Quad Code) | |
| Adelaida (3512067), Apache Canyon (3411973), Avenal (3612012), Ballinger Canyon (3411984), Bradley (3512077), Bryson (3512171), Caliente Mtn. (3511917), Camatta Ranch (3512043), Chimineas Ranch (3511928), Cholame (3512063), Cholame Hills (3512074), Cholame Valley (3512073), Curry Mountain (3612014), Cuyama (3411985), Cuyama Peak (3411974), Fox Mountain (3411975), Frazier Mtn. (3411878), Garza Peak (3512082), Grapevine (3411888), Greenfield (3612132), Hames Valley (3512088), Holland Canyon (3512052), Junipero Serra Peak (3612124), Kettleman Plain (3512081), La Cima (3612011), La Panza (3512032), La Panza NE (3512041), La Panza Ranch (3512042), Lone Tree Creek (3712154), Lonoak (3612038), Los Banos Valley (3612181), Maricopa (3511914), McKittrick Summit (3511937), Mettler (3511818), Midway (3712165), Monarch Peak (3612027), Nattrass Valley (3612028), New Cuyama (3411986), North Chalone Peak (3612142), Orchard Peak (3512062), Ortigalita Peak NW (3612088), Packwood Creek (3512051), Painted Rock (3511927), Paraiso Springs (3612133), Parkfield (3512084), Paso Robles (3512066), Patterson (3712142), Pleito Hills (3411981), Pozo Summit (3512033), Ranchito Canyon (3512075), Rancho Nuevo Creek (3411964), Reward (3511936), Reyes Peak (3411963), Salisbury Potrero (3411976), San Miguel (3512076), Shandon (3512064), Solyo (3712153), Stockdale Mountain (3512085), Sycamore Flat (3612134), Taylor Canyon (3511918), Templeton (3512056), Tent Hills (3512072), The Dark Hole (3512083), Tierra Redonda Mountain (3512078), Wells Ranch (3511916), Westley (3712152), Wheeler Springs (3411953), Williams Hill (3512181), Wilson Corner (3512044) | |
Threat List Data from the CNDDB
| Threat List Total: | 10 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 18 | 20 % | |
| Grazing | 9 | 9% |
| Non-native plant impacts | 9 | 9% |
| ORV activity | 1 | 1% |
| Road/trail construction/maint. | 1 | 1% |
| Improper burning regime | 1 | 1% |
| Military operations | 1 | 1% |
| Dam/Inundation | 1 | 1% |
| Erosion/runoff | 1 | 1% |
| Feral pigs | 1 | 1% |
| Foot traffic/trampling | 1 | 1% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 22 January 2025].