Species Details

Sidalcea calycosa ssp. rhizomata

Point Reyes checkerbloom

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Scientific Name:
Sidalcea calycosa Jones ssp. rhizomata (Jeps.) Munz
Common Name:
Point Reyes checkerbloom
Family: Malvaceae
Element Code: PDMAL11012
USDA Plants Symbol: SICAR
Synonyms/Other Names:
Lifeform: perennial rhizomatous herb
Blooming Period: Apr-Sep
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Elevation:
3 - 75 meters
10 - 245 feet
General Habitats:
  • Marshes and swamps (freshwater, near coast)
Microhabitat Details:
Microhabitat:
Notes:
Threatened by non-native plants, road maintenance, foot traffic, and pipeline construction. Possibly threatened by grazing.  See Manual of the Flowering Plants of California, p. 629 (1925) by W.L. Jepson for original description.
Threats:
Taxonomy:
Threat List Total: 9
Total EOs % of EOs
EOs with Threat Listed: 20 59 %
THREAT LIST:
Grazing 13 38%
Other 10 29%
Road/trail construction/maint. 6 17%
Foot traffic/trampling 5 14%
Non-native plant impacts 3 8%
Total Occurrences: 34
Element Occurrence Ranks:
A B C D X U
1 17 6 1 0 9
Occurrence Status:
Historical >20 Years 20
Recent <=20 Years 14
Presence:
Presumed Extant 34
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Marin (MRN), Mendocino (MEN), Sonoma (SON)
Quads: Name (Quad Code)
Albion (3912327), Bolinas (3712286), Drakes Bay (3812218), Duncans Mills (3812341), Elk (3912326), Inverness (3812217), Petaluma (3812226), Petaluma River (3812225), San Rafael (3712285), Saunders Reef (3812376), Stewarts Point (3812364), Tomales (3812228), Valley Ford (3812238)
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.
Presumed Extant
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