Species Details

Adiantum shastense

Shasta maidenhair fern

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Classification

Scientific Name: Adiantum shastense Huiet & A.R. Sm.
Common Name: Shasta maidenhair fern
Family:	Pteridaceae
Element Code:	PPADI030W0
USDA Plants Symbol:	ADSH
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	4.3
Fed List:	None
State List:	None
Global Rank:	G3
State Rank:	S3
Other Status:
CRPR Changes: added to 4.3 on 2016-11-18
Add Date:	2016-11-18
Date Edited:	2021-09-27

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Apr-Aug

Elevation:
330 - 1535 meters
1085 - 5035 feet

General Habitats:

Lower montane coniferous forest

Microhabitat Details:

Microhabitat:

Carbonate (sometimes)

Notes

Notes: Originally identified as A. jordanii and also similar to A. capillus-veneris; distinguished from these species in having diamond shaped pinnules and by its perennial habit, with the presence of old fronds underlying its fresh fronds. See PhytoKeys 53:73-81 (2015) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	0
	Total EOs	% of EOs
EOs with Threat Listed:	0	0 %

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)

California Counties and Islands: Name (Code)
Shasta (SHA)

Quads: Name (Quad Code)
Big Bend (4112118), Bohemotash Mtn. (4012274), Bollibokka Mtn. (4012282), Chalk Mtn. (4012187), Chicken Hawk Hill (4112214), Devils Rock (4012271), Girard Ridge (4112222), Goose Gap (4012281), Hanland Peak (4012283), Lake McCloud (4112221), Lamoine (4012284), Minnesota Mtn. (4012272), Montgomery Creek (4012178), Oak Run (4012261), O'Brien (4012273), Project City (4012263), Roaring Creek (4012188), Shasta Dam (4012264), Tombstone Mtn. (4112213), Yellowjacket Mtn. (4112212)

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

Click on quad for name. Hold Shift Key to use mouse scroll wheel

Selected References

CNPS Status Review:

Proposed Addition to California Rare Plant Rank 4.3, G3 / S3 (2016)