Species Details

Helianthus inexpectatus

Newhall sunflower

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Scientific Name:
Helianthus inexpectatus D.J. Keil & Elvin
Common Name:
Newhall sunflower
Family: Asteraceae
Element Code: PDAST4N250
USDA Plants Symbol:
Synonyms/Other Names:
Fed List: None
State List: None
Global Rank: G1
State Rank:
S1
CA Rare Plant Rank: 1B.1
Other Status: SB_CalBG/RSABG
CRPR Changes:
added to 1B.1 on 2010-08-16
Add Date: 2010-08-16
Date Edited: 2021-05-26
Lifeform: perennial rhizomatous herb
Blooming Period: Aug-Oct
Elevation:
305 - 305 meters
1000 - 1000 feet
General Habitat:
  • Marshes and swamps
  • Riparian woodland
General Micro Habitat: freshwater, seeps
Micro Habitat:
Notes:
Known from a single occurrence of fewer than 10 individuals. Potentially threatened by development, hydrological alterations, habitat alteration and loss, urban runoff, non-native plants, recreational activities, and foot traffic. Possibly threatened by air pollution and pollination reduction. See Aliso 28:59-62 (2010) for original description.
Threats:
Potentially threatened by development, hydrological alterations, habitat alteration and loss, urban runoff, non-native plants, recreational activities, and foot traffic. Possibly threatened by air pollution and pollination reduction.
Taxonomy:
Other:
Known from a single occurrence of fewer than 10 individuals.
References:
See Aliso 28:59-62 (2010) for original description.
Total Occurrences: 1
Element Occurrence Ranks:
A B C D X U
0 0 1 0 0 0
Occurrence Status:
Historical >20 Years 0
Recent <=20 Years 1
Presence:
Presumed Extant 1
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Los Angeles (LAX)
Quads: Name (Quad Code)
Newhall (3411845)
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.

Map

Presumed Extant
Counties   Quads