Species Details

Ramalina thrausta

angel's hair lichen

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Photo of Ramalina thrausta
© 2013 Scot Loring
Photo of Ramalina thrausta
© 2013 Scot Loring
Photo of Ramalina thrausta
© 2013 Scot Loring
Scientific Name:
Ramalina thrausta (Ach.) Nyl.
Common Name:
angel's hair lichen
Family: Ramalinaceae
Element Code: NLLEC3S340
USDA Plants Symbol: RATH2
Synonyms/Other Names:
Lifeform: fruticose lichen (epiphytic)
Blooming Period:
75 - 430 meters
245 - 1410 feet
General Habitat:
  • North Coast coniferous forest
General Micro Habitat: On dead twigs and other lichens
Micro Habitat:
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
Potentially threatened by air pollution.
Total Occurrences: 21
Element Occurrence Ranks:
0 0 4 0 1 16
Occurrence Status:
Historical >20 Years 8
Recent <=20 Years 13
Presumed Extant 20
Possibly Extirpated 1
Presumed Extirpated 0
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)
Bailey Ridge (3912324), 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), Orrs Springs (3912323), Shelly Creek Ridge (4112387)
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
Counties   Quads
Species Account: Ramalina thrausta profile for potential Species of Conservation Concern evaluation (2018)
Other: Bulletin of the California Lichen Society 13(1):17 (2006) for CALS Conservation Committee sponsorship.