CNPS Inventory Plant Detail

Sidalcea oregana ssp. hydrophila

Common Name:	marsh checkerbloom
Family:	Malvaceae
Synonyms:
Element Code:	PDMAL110K2
Full Name:	Sidalcea oregana (T. & G.) Gray ssp. hydrophila (Heller) Hitchc.
USDA PLANTS Symbol:	SIORH

Biology
Lifeform: perennial herb Blooming Period: July - August Habitat: mesic. • Meadows and seeps • Riparian forest

Rarity Status
CA Rare Plant Rank: 1B.2 Rare, threatened, or endangered in California and elsewhere .2: Fairly endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S2? S2: Imperiled. Global Rank: G5T2? T2: Imperiled. G5: (species) Secure, considering populations outside California.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 23
Element Occurrence Ranks:

A B C D X U

0 0 0 0 1 22

Population Status:

Historic >20 yrs	Recent <=20 yrs
23	0

Presence:

Present Extant	Possibly Extirpated	Extirpated
22	1	0

Notes
Intergrades with ssp. valida. See Muhlenbergia 1:107 (1904) for original description, and University of Washington Publications in Biology 18:1-96 (1957) for taxonomic treatment. To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page. Date Added: 1974-01-01 Last Update: 2010-03-15

Location

Elevation: 1100 - 2300 meters

California Endemic: yes

States: California

California Counties and Islands: name (code)
Glenn (GLE), Lake (LAK), Mendocino (MEN), Napa (NAP)

Quads: name (DWR code) USGS code
St. Helena (516C) 38122E4, Detert Reservoir (517A) 38122F5, Whispering Pines (533C) 38122G6, The Geysers (534D) 38122G7, Fouts Springs (564C) 39122C6, Lake Pillsbury (565B) 39122D8, Elk Mountain (565C) 39122C8, Potato Hill (565D) 39122C7, Plaskett Meadows (581A) 39122F7, Plaskett Ridge (581B) 39122F8, Hull Mountain (581C) 39122E8, Kneecap Ridge (581D) 39122E7, Jamison Ridge (582B) 39123F2, Sanhedrin Mtn. (582D) 39123E1

Notes:

Definitions of codes preceding a county and/or quad:
*		Presumed extirpated
?		Uncertain about distribution or identity
?*		Uncertain about distribution, but presumed extirpated if once present
(?)		Occurrence confirmed, but possibly extirpated

Species may be present in other areas where conditions are favorable.

Presumed Extant

Presumed Extirpated or Unknown

1780

Links to Leading Resources of Taxon Information
USDA PLANTS Calflora CalPhotos Consortium of California Herbaria California Department of Fish and Game: CNDDB Quick Viewer

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-01a). California Native Plant Society. Sacramento, CA. Accessed on .

-122.75,39.25