CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record calicium_adspersum - Sun, Nov. 28, 2021 00:33 ET c
Calicium adspersum
common namespiral-spored guilded-head pin lichen
CalPhotos image
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life formcrustose lichen epiphytic
CA Rare Plant Rank
List 2B.2
LIST 2B: Rare, threatened, or endangered in California, but more common elsewhere.
     0.2: Fairly endangered in California
state rank
S1?     S1: Less than 6 occurrences OR less than 1,000 individuals OR less than 2,000 acres
global rank
G3G4   G3G4: Intermediate between G3 and G4
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (3):
Sister Rocks (723B) 4112462, Crescent City (740C) 4112472, Hiouchi (740D) 4112471
quad data info

Counties, states, regions:
Del Norte (DNT), Oregon (OR), Washington (WA)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Lower montane coniferous forest (LCFrs)
•North Coast coniferous forest (NCFrs)/Often restricted to old-growth bark of conifers that are over 200 years in age
elevation range200 - 200 meters
Known in CA only from Jedediah Smith Redwoods SP. Historically threatened by logging. Possibly threatened by alteration of fire regimes. Host conifers could include Abies grandis, Pseudotsuga menziesii, Sequoia sempervirens, and Thuja plicata. Similar to C. lenticulare; however, C. adspersum is the only species of Calicium currently known from the Pacific Coast with a yellow pruina. See Bulletin of the California Lichen Society 13(2):51-54 (2006) for CALS Conservation Committee sponsorship.
full nameCalicium adspersum Pers.
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym   Element Code  NLT0005640
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 Sun, Nov. 28, 2021 from

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