Species Details

Sidalcea hickmanii ssp. napensis

Napa checkerbloom

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Scientific Name:
Sidalcea hickmanii Greene ssp. napensis S.R. Hill
Common Name:
Napa checkerbloom
Family: Malvaceae
Element Code: PDMAL110A6
USDA Plants Symbol:
Synonyms/Other Names:
CA Rare Plant Rank: 1B.1
Fed List: None
State List: None
Global Rank: G3T1
State Rank:
S1
Other Status: SB_CalBG/RSABG
CRPR Changes:
added to 1B.1 on 2009-04-02
Add Date: 2009-04-02
Date Edited: 2022-06-08
Lifeform: perennial herb
Blooming Period: Apr-Jun
Elevation:
415 - 610 meters
1360 - 2000 feet
General Habitat:
  • Chaparral
General Micro Habitat: rhyolitic
Micro Habitat:
Notes:
Known from only 2 occurrences. Threatened by agriculture. See J. Bot. Res. Inst. Texas 2(2): 783-791 (2008) for original description.
Threats:
Taxonomy:
Other:
Total Occurrences: 2
Element Occurrence Ranks:
A B C D X U
0 0 0 0 0 2
Occurrence Status:
Historical >20 Years 2
Recent <=20 Years 0
Presence:
Presumed Extant 2
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Napa (NAP), Sonoma (SON)
Quads: Name (Quad Code)
Calistoga (3812255), Mt. George (3812232), Sonoma (3812234)
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