Taxon Details

Lasthenia chrysantha

alkali-sink goldfields

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Taxon Summary:

Lasthenia chrysantha, commonly known as alkali-sink goldfields, is a annual herb in the Asteraceae that is found only in California. It occurs within Vernal pools, growing at elevations from 0 to 200 meters. Lasthenia chrysantha is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.

Classification

Scientific Name: Lasthenia chrysantha (A. Gray) Greene
Common Name: alkali-sink goldfields
Family:	Asteraceae
Element Code:	PDAST5L030
USDA Plants Symbol:
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:
CRPR Changes: added to 1B.1 on 2019-09-30
Add Date:	2019-09-30
Date Edited:	2022-04-05

Ecology and Life History

Lifeform: annual herb

Blooming Period: Feb-Apr

Elevation:
0 - 200 meters
0 - 655 feet

General Habitats:

Vernal pools

Microhabitat Details:

Microhabitat:

Alkaline

Notes

Notes: See Synoptical Flora of North America 1(2):445 (1884) for original description, and Manual of the Botany of the Region of San Francisco Bay, p. 204 (1894) by E.L. Greene for revised nomenclature.
Threats: Threatened by habitat loss, agriculture, urbanization, and development.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	4
	Total EOs	% of EOs
EOs with Threat Listed:	25	45 %
Agriculture	23	41%
Development	5	9%
Grazing	1	1%
Non-native plant impacts	1	1%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					55
A	B	C	D	X	U
0	0	0	0	15	40

Occurrence Status:
Historical >20 Years	49
Recent <=20 Years	6

Presence:
Presumed Extant	40
Possibly Extirpated	15
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Fresno (FRE), Kern (KRN), Kings (KNG), Madera (MAD), Merced (MER), Sacramento (SAC), Solano (SOL), Stanislaus (STA), Tulare (TUL)

Quads: Name (Quad Code)
Allensworth (3511974), Alpaugh (3511984), Arena (3712036), Cairns Corner (3611922), Cerro Colorado (3612068), Chounet Ranch (3612066), Chowchilla (3712013), Conejo (3611956), Crows Landing (3712141), Delano West (3511973), Dozier (3812137), Dudley Ridge (3511987), El Nido (3712024), El Rico Ranch (3611916), Exeter (3611932), Florin (3812144), Goshen (3611934), Gravelly Ford (3612072), Guijarral Hills (3612022), Gustine (3712038), Hacienda Ranch NW (3511986), Hammonds Ranch (3612076), Helm (3612051), Jamesan (3612062), Kerman (3612061), Laguna Seca Ranch (3612077), Laton (3611946), Lone Tree Well (3511976), Lost Hills (3511956), Lost Hills NE (3511965), Lost Hills NW (3511966), Mercey Hot Springs (3612067), Monson (3611943), Ortigalita Peak (3612078), Pixley (3511983), Remnoy (3611935), Ripon (3712162), San Luis Ranch (3712027), Sausalito School (3511982), Semitropic (3511955), Stevinson (3712037), Stratford Se (3611917), Taylor Weir (3611914), Tranquillity (3612063), Traver (3611944), Tulare (3611923), Tupman (3511933), Westley (3712152)

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