Species Details

Caulanthus lemmonii

Lemmon'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

Scientific Name: Caulanthus lemmonii S. Watson
Common Name: Lemmon's jewelflower
Family:	Brassicaceae
Element Code:	PDBRA0M0E0
USDA Plants Symbol:	CALE25
Synonyms/Other Names: Caulanthus coulteri var. lemmonii
Name Status:	JEP, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G3
State Rank:	S3
Other Status:	BLM_S; SB_SBBG; USFS_S
CRPR Changes:
Add Date:	2001-01-01
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: annual herb

Blooming Period: Feb-May

Elevation:
80 - 1580 meters
260 - 5185 feet

General Habitats:

Pinyon and juniper woodland
Valley and foothill grassland

Microhabitat Details:

Microhabitat:

Notes

Notes: Need quads for SBT Co. Threatened by development, grazing, and vehicles. See Proceedings of the American Academy of Arts and Sciences 23:261 (1888) for original description, and Aliso 4(3):503 (1960) for revised nomenclature.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	10
	Total EOs	% of EOs
EOs with Threat Listed:	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%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					91
A	B	C	D	X	U
7	8	2	1	0	73

Occurrence Status:
Historical >20 Years	62
Recent <=20 Years	29

Presence:
Presumed Extant	91
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

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)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

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CNPS Rare Plant Inventory