iNaturalist Research Grade Observations
Catalog #: 17053077
Taxon: Sigridea californica (Tuck.) Tehler
Family: Roccellaceae
Collector: Cindy Trubovitz      
Date: 2018-09-28
Verbatim Date: 2018-09-28
Locality: United States, California, Torrey Pines State Reserve, San Diego Co., California, USA
32.91525  -117.246 +-3016m.
Georeference Remarks: GEODETIC_DATUM_ASSUMED_WGS84
Description: Original observation #17053077 (iNaturalist)
Occurrence Remarks:

The apothecia appear to have a white pruinose and if a Lecanora, apothecia seem smaller than my previous observation referenced (see Mushroom Observer on this page). The thallus turned yellow with orange undertones with NaOH application.Scraping the thallus lightly produced yellow and removing the apothecia left a pink/red surface.

Specimen Images
Rights Holder: © held by the observer (listed as 'Collector') at, with some rights reserved (CC BY-SA)
Record Id: f95dce85-a3dc-450f-aaa8-f42ccb9a8911
Occurrence ID (GUID):
For additional information on this occurrence, please contact: Ken-ichi Ueda (
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