Species Details

Grindelia hirsutula var. maritima

San Francisco gumplant

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Photo of Grindelia hirsutula var. maritima
Robert Potts © 2001 California Academy of Sciences
Scientific Name:
Grindelia hirsutula H. & A. var. maritima (Greene) M.A. Lane
Common Name:
San Francisco gumplant
Family: Asteraceae
Element Code: PDAST470D3
USDA Plants Symbol: GRHIM
Synonyms/Other Names:
CA Rare Plant Rank: 3.2
Fed List: None
State List: None
Global Rank: G5T1Q
State Rank:
Other Status: SB_UCSC
CRPR Changes:
changed from 1B.2 to 3.2 on 2011-09-20
Add Date: 1974-01-01
Date Edited: 2022-01-05
Lifeform: perennial herb
Blooming Period: Jun-Sep
15 - 400 meters
50 - 1310 feet
General Habitats:
  • Coastal bluff scrub
  • Coastal scrub
  • Valley and foothill grassland
Microhabitat Details:
  • Sandy (sometimes)
  • Serpentine (sometimes)
Previously on List 1B. Plants from MNT and SCR counties need verification. Threatened by coastal development and non-native plants. Can be difficult to identify; many herbarium specimens need to be checked for correct identification. May be a hybrid between G. hirsutula var. hirsutula and G. stricta var. platyphylla or G. stricta var. angustifolia; needs further study. Not in TJM 2. See Pittonia 2:289 (1892) for original description and Novon 2(3):215-217 (1992) for revised nomenclature.
Threat List Total: 5
Total EOs % of EOs
EOs with Threat Listed: 11 73 %
Non-native plant impacts 7 46%
Other 2 13%
Development 2 13%
Foot traffic/trampling 2 13%
Road/trail construction/maint. 1 6%
Total Occurrences: 15
Element Occurrence Ranks:
0 4 2 1 1 7
Occurrence Status:
Historical >20 Years 15
Recent <=20 Years 0
Presumed Extant 14
Possibly Extirpated 0
Presumed Extirpated 1
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Marin (MRN), San Francisco (SFO), San Luis Obispo (SLO), San Mateo (SMT), Santa Clara (SCL)
Quads: Name (Quad Code)
Castle Rock Ridge (3712221), Drakes Bay (3812218), Los Gatos (3712128), Montara Mountain (3712254), Pigeon Point (3712224), Point Bonita (3712275)?, San Francisco North (3712274), San Francisco South (3712264), San Geronimo (3812216), San Luis Obispo (3512036), Tomales (3812228)
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.
Presumed Extant
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