Synonyms: Biatorella flava, Biatorella pruinosa, Biatorella regularis, Lecanora glaucocarpa, Lecanora pruinosa, Lecidea pruinosa, Sarcogyne decipiens, Sarcogyne pruinosa.
Common name: Frosted Grain-spored Lichen.
Sarcogyne regularis is a crustose lichen that forms yellowish to grayish-white patches on limestone and dolostone rocks. In East and Central Texas, it typically grows on calcareous outcrops, boulders, and cliffs, often in full sun to partial shade. The thallus is 0.1-0.5 mm thick, with a smooth to slightly rough surface, and lacks distinct vegetative dispersal structures. Apothecia are numerous, immersed to slightly raised, and 0.2-0.5 mm in diameter, with a yellowish to brownish disc. The species is common in the Edwards Plateau region of Central Texas, and also occurs in the Post Oak Savannah and Blackland Prairie regions of East Texas, where it can be found on rocky outcrops and ledges, particularly in areas with low to moderate vegetation cover.
Pepper-like lichen Sarcogyne regularis(?) with black cyanobacteria on sandstone in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2020
23668 FM 1155, Washington, TX 77880, USA
Pepper-like lichen Sarcogyne regularis(?) on a sandstone rock in prairie in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 202023668 FM 1155, Washington, TX 77880, USAObservations of Sarcogyne regularis in East and Central Texas reveal its presence on sandstone formations. In Washington-on-the-Brazos State Historic Site, the lichen was found with black cyanobacteria on sandstone on March 1, 2020. It exhibited a pepper-like appearance, suggesting a distinctive growth pattern. Similarly, another observation at the same site showed Sarcogyne regularis(?) growing on a sandstone rock in a prairie environment, also displaying a pepper-like morphology. The species' ability to thrive on sandstone substrates is evident, indicating its adaptability to this type of environment. These findings provide insight into the habitat preferences and growth characteristics of Sarcogyne regularis in East and Central Texas, highlighting its presence in specific geological and ecological contexts. The lichen's distribution appears to be linked to sandstone outcrops in prairie environments.
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