CNPS Inventory Plant Detail

Ramalina thrausta

Common Name:	angel's hair lichen
Family:	Ramalinaceae
Synonyms:
Element Code:	NLLEC3S340
Full Name:	Ramalina thrausta (Ach.) Nyl.
USDA PLANTS Symbol:	RATH2

Biology
Lifeform: fruticose lichen (epiphytic) Blooming Period: Habitat: On dead twigs and other lichens. • North Coast coniferous forest

Rarity Status
Rare Plant Rank: 2B.1 Endangered in California .1: Seriously endangered in California Federal Listing Status: Not Listed State Listing Status: Not Listed State Rank: S2? S2: Imperiled. Global Rank: G5 G5: Secure, considering populations outside California.

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 14
Element Occurrence Ranks:

A B C D X U

0 0 0 0 2 12

Population Status:

Historic >20 yrs	Recent <=20 yrs
4	10

Presence:

Present Extant	Possibly Extirpated	Extirpated
12	2	0

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. 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.
CALS Conservation Committee
To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
Date Added: 2014-03-01
Last Update: 2014-05-29

Location

Elevation: 75 - 430 meters

California Endemic: no

States: California, !AK, Idaho, !ME, !MI, !MN, !MT, Oregon, Washington

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

Quads: name (DWR code) USGS code
Monterey (366C) 36121E8, Fort Ross (519C) 38123E2, Mathison Peak (568C) 39123C6, Fort Bragg (569A) 39123D7, Longvale (583C) 39123E4, Grouse Mtn. (670C) 40123G6, Shelly Creek Ridge (739A) 41123H7, Gasquet (739C) 41123G8, High Divide (740A) 41124H1, Hiouchi (740D) 41124G1

Notes:

Definitions of codes preceding a county and/or quad:
*		Presumed extirpated
?		Uncertain about distribution or identity
?*		Uncertain about distribution, but presumed extirpated if once present
(?)		Occurrence confirmed, but possibly extirpated

Species may be present in other areas where conditions are favorable.

Presumed Extant

Presumed Extirpated or Unknown

3812

Links to Leading Resources of Taxon Information
USDA PLANTS Consortium of North American Lichen Herbaria California Lichen Society (CALS) CalPhotos California Department of Fish and Wildlife: CNDDB Quick Viewer

Suggested Citation
CNPS, Rare Plant Program. . Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society, with lichen data from the California Lichen Society, Sacramento, CA. Website http://www.rareplants.cnps.org [accessed ].

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