Taxon Details

Helianthus nuttallii ssp. parishii

Los Angeles sunflower

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Taxon Summary:

Helianthus nuttallii ssp. parishii, commonly known as Los Angeles sunflower, is a perennial rhizomatous herb in the Asteraceae that is found only in California. It occurs within Marshes and swamps (freshwater, and coastal salt), growing at elevations from 10 to 1525 meters. Helianthus nuttallii ssp. parishii is ranked 1A, Plants Presumed Extirpated in California and Either Rare or Extinct Elsewhere.

Classification

Scientific Name: Helianthus nuttallii T. & G. ssp. parishii (Gray) Heiser
Common Name: Los Angeles sunflower
Family:	Asteraceae
Element Code:	PDAST4N102
USDA Plants Symbol:	HENUP
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1A
Fed List:	None
State List:	None
Global Rank:	G5TX
State Rank:	SX
Other Status:
CRPR Changes:
Add Date:	1974-01-01
Date Edited:	2022-01-05

Ecology and Life History

Lifeform: perennial rhizomatous herb

Blooming Period: Aug-Oct

Elevation:
10 - 1525 meters
35 - 5005 feet

General Habitats:

Marshes and swamps (freshwater, coastal salt)

Microhabitat Details:

Microhabitat:

Notes

Notes: Last seen in 1937. Extirpated by urbanization. See Proceedings of the American Academy of Arts and Sciences 14:7 (1883) for original description, and Memoirs of the Torrey Botanical Club 22(3):147-152 (1969) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	2
	Total EOs	% of EOs
EOs with Threat Listed:	5	71 %
Development	5	71%
Altered flood/tidal/hydrologic regime	1	14%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					7
A	B	C	D	X	U
0	0	0	0	5	2

Occurrence Status:
Historical >20 Years	7
Recent <=20 Years	0

Presence:
Presumed Extant	2
Possibly Extirpated	2
Presumed Extirpated	3

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Los Angeles (LAX)*, Orange (ORA)*, San Bernardino (SBD)*

Quads: Name (Quad Code)
Hollywood (3411813)*, Los Angeles (3411812)*, Newport Beach (3311768)*, Pasadena (3411822), San Bernardino South (3411713)*, Seal Beach (3311861), Telegraph Peak (3411735), Tustin (3311767)

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