CNPS.ORG Inventory of Rare and Endangered Plants - 7th edition interface
v7-18mar 3-19-18
Status: record thamnolia_vermicularis - Thu, Dec. 2, 2021, 08:14 ET b
Thamnolia vermicularis
common namewhiteworm lichen
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life formfruticose lichen terrestrial
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
S1      ranking system key
global rank
G3G5      ranking system key
CA state listingNone  
federal listingNone  
where found
MAPS - Use v8 link below.

Topographic quads (2):
Tomales (485B) 3812228, Valley Ford (502C) 3812238
quad data info

Counties, states, regions:
Marin (MRN), Alaska (AK), Colorado (CO), Conneticut (CT), Idaho (ID), Montana (MT), New Hampshire (NH), New York (NY), Oregon (OR), Vermont (VT), Washington (WA), Wyoming (WY)
A reminder: Species not recorded for a given area may nonetheless be present, especially where favorable conditions occur.
CNPS habitats•Chaparral (Chprl)
•Valley and foothill grassland (VFGrs)/On rocks derived from sandstone
elevation range90 - 90 meters
Known in CA only from near Dillon Beach. Preferred habitat may exist on Mt. Shasta; needs field surveys. Possibly threatened by trampling and foot traffic. See Bulletin of the California Lichen Society 16(2):21-26 (2009) for CALS Conservation Committee sponsorship.
full nameThamnolia vermicularis (Swartz) Ach. ex Schaerer
Version 8    INVENTORY VERSION 8 interface for this taxon, including GIS and more links

Additional information:
standard acronym   Element Code  NLTES43860
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 Thu, Dec. 2, 2021 from

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