Species Details

Ramalina thrausta

angel's hair lichen

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Classification

Scientific Name: Ramalina thrausta (Ach.) Nyl.
Common Name: angel's hair lichen
Family:	Ramalinaceae
Element Code:	NLLEC3S340
USDA Plants Symbol:	RATH2
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	2B.1
Fed List:	None
State List:	None
Global Rank:	G5?
State Rank:	S2S3
Other Status:
CRPR Changes: added to 2B.1 on 2014-03-01
Add Date:	2014-03-01
Date Edited:	2022-08-02

Ecology and Life History

Lifeform: fruticose lichen (epiphytic)

Blooming Period:

Elevation:
75 - 430 meters
245 - 1410 feet

General Habitats:

North Coast coniferous forest

Microhabitat Details: On dead twigs and other lichens

Microhabitat:

Notes

Notes: Known in CA only from the Smith River and its major tributaries in DNT Co., and from a single disjunct occurrence along the Gualala River in SON Co.; needs field surveys. Populations in decline, with net loss of 12.5% of sites in three-year period. In northern CA it is usually found on dead twigs, and has been found on Alnus rubra, Calocedrus decurrens, Pseudotsuga menziesii, Quercus garryana, and Rubus spectabilis. In SON Co. it grows on and among dangling mats of Ramalina menziesii and Usnea spp. Similar to Alectoria sarmentosa, A. vancouverensis, and R. menziesii.
Threats: Potentially threatened by air pollution.
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	3
	Total EOs	% of EOs
EOs with Threat Listed:	1	5 %
Erosion/runoff	1	4%
Logging	1	4%
Other	1	4%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					21
A	B	C	D	X	U
0	0	4	0	1	16

Occurrence Status:
Historical >20 Years	11
Recent <=20 Years	10

Presence:
Presumed Extant	20
Possibly Extirpated	1
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
Alaska (AK), California (CA), Idaho (ID), Maine (ME), Michigan (MI), Minnesota (MN), Montana (MT), Oregon (OR), Washington (WA)

California Counties and Islands: Name (Code)
Del Norte (DNT), Humboldt (HUM), Mendocino (MEN), Monterey (MNT), Sonoma (SON)

Quads: Name (Quad Code)
Cant Hook Mtn. (4112368), Fort Bragg (3912347), Fort Ross (3812352), Gasquet (4112378), Grouse Mtn. (4012376), High Divide (4112481), Hiouchi (4112471), Longvale (3912354), Mathison Peak (3912336), Mendocino (3912337), Monterey (3612158), Shelly Creek Ridge (4112387)

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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Selected References

Species Account:	Ramalina thrausta profile for potential Species of Conservation Concern evaluation (2018)
Other:	USFS Potential Species of Conservation Concern Profile
Other:	Bulletin of the California Lichen Society 13(1):17 (2006) for CALS Conservation Committee sponsorship.