Species Details

Micranthes marshallii

Marshall's saxifrage

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2017 Barrett Jeffery

Classification

Scientific Name: Micranthes marshallii (Greene) Small
Common Name: Marshall's saxifrage
Family:	Saxifragaceae
Element Code:	PDSAX0U0X0
USDA Plants Symbol:
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	4.3
Fed List:	None
State List:	None
Global Rank:	G5
State Rank:	S3
Other Status:
CRPR Changes: added to 4.3 on 2016-07-06
Add Date:	2016-07-06
Date Edited:	2022-02-01

Ecology and Life History

Lifeform: perennial rhizomatous herb
Blooming Period: Mar-Aug
Elevation: 90 - 2130 meters 295 - 6990 feet
General Habitat: Riparian forest
General Micro Habitat: rocky streambanks
Micro Habitat: Rocky Streambanks

Notes

Notes: Possibly threatened by fire suppression. Previously identified as Saxifraga rufidula, which does not occur in California. See Saxifraga marshallii in TJM (1993). See Pittonia 1(9):159-160 (1888) for original description and North American Flora 22(2):145 (1905) for taxonomic treatment.
Threats:
Taxonomy:
Other:

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					0
A	B	C	D	X	U
0	0	0	0	0	0

Occurrence Status:
Historical >20 Years	0
Recent <=20 Years	0

Presence:
Presumed Extant	0
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Idaho (ID)?, Montana (MT)?, Oregon (OR), Washington (WA)?

California Counties and Islands: Name (Code)
Del Norte (DNT), Humboldt (HUM), Mendocino (MEN), Siskiyou (SIS), Trinity (TRI)

Quads: Name (Quad Code)
English Peak (4112342), French Camp Ridge (4112327), Gasquet (4112378), Hennessy Peak (4012375), Hiouchi (4112471), Hurdygurdy Butte (4112377), Leggett (3912376), Salyer (4012385), Shelly Creek Ridge (4112387), Trinity Mtn. (4112314), Ukonom Lake (4112353), Willow Creek (4012386)

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.

Regional Map

Map

Presumed Extant

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Counties Quads

Selected References

CNPS Status Review:

CRPR List Addition on 2016-07-06