CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record ramalina_thrausta - Wed, Dec. 1, 2021, 07:51 ET b
Ramalina thrausta
common nameangel's hair lichen
CalPhotos image
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life formfruticose lichen epiphytic
CA Rare Plant Rank
List 2B.1
LIST 2B: Rare, threatened, or endangered in California, but more common elsewhere.
     0.1: Seriously endangered in California
state rank
S2?     S2: 6-20 occurrences OR 1,000-3,000 individuals OR 2,000-10,000 acres
global rank
G5     G5: demonstrably secure to ineradicable
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (10):
Monterey (366C) 3612158, Fort Ross (519C) 3812352, Mathison Peak (568C) 3912336, Fort Bragg (569A) 3912347, Longvale (583C) 3912354, Grouse Mountain (670C) 4012376, Shelly Creek Ridge (739A) 4112387, Gasquet (739C) 4112378, High Divide (740A) 4112481, Hiouchi (740D) 4112471
quad data info

Counties, states, regions:
Del Norte (DNT), Humboldt (HUM), Mendocino (MEN), Monterey (MNT), Sonoma (SON), Alaska (AK), Idaho (ID), Maine (ME), Michigan (MI), Minnesota (MN), Montana (MT), Oregon (OR), Washington (WA)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•North Coast coniferous forest (NCFrs)/On dead twigs and other lichens
elevation range75 - 430 meters
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. Potentially threatened by air pollution. 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. See Bulletin of the California Lichen Society 13(1):17 (2006) for CALS Conservation Committee sponsorship.
full nameRamalina thrausta (Ach.) Nyl.
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym   Element Code  NLLEC3S340
Jepson Online Jepson Interchange  Jepson Manual and other resources
Google search
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Suggested citation: California Native Plant Society (CNPS). 2018. Inventory of Rare and Endangered Plants (online edition, v7-18mar). California Native Plant Society. Sacramento, CA. Accessed on Wed, Dec. 1, 2021 from

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