Synonyms: Caloplaca lobulata, Caloplaca subsoluta, Lecanora murorum, Lecanora subsoluta, Physcia pusilla, Physcia subsoluta, Placodium subsolutum.
Squamulea subsoluta is a crustose lichen species characterized by its pale yellow to cream-colored thallus, composed of small, rounded squamules. In East and Central Texas, it typically grows on bark, particularly on deciduous trees such as oak and elm, and occasionally on rocky outcrops. The species is relatively rare in the region, with scattered records from areas with rich soil and moderate to high humidity. Its distribution in East and Central Texas appears to be limited to the eastern part of the Edwards Plateau and the Post Oak Savannah ecoregions.
Firedot lichen Caloplaca subsoluta (Squamulea subsoluta, Caloplaca irrubescens) with black prothallus on a granite tomb in old Port Sullivan cemetery, west from Hearne. Texas, January 8, 2019
177 County Rd 259a, Cameron, TX 76520, USA
Firedot lichen Caloplaca subsoluta (Squamulea subsoluta, Caloplaca irrubescens) on a granite tombstone in old Port Sullivan cemetery, west from Hearne. Texas, January 8, 2019177 County Rd 259a, Cameron, TX 76520, USA
Firedot lichen Caloplaca subsoluta (Squamulea subsoluta, Caloplaca irrubescens) on limestone near the river in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019Unnamed Road, Johnson City, TX 78636, USAObservations of Squamulea subsoluta in East and Central Texas reveal its presence on various substrates. In old Port Sullivan cemetery, it was found on granite tombstones with a black prothallus, indicating its ability to thrive on hard, rocky surfaces. Similar observations were made on another granite tombstone in the same cemetery. Additionally, the species was spotted on limestone near a river in Pedernales Falls State Park, demonstrating its adaptability to different types of rock and environments. The sightings in January 2019 suggest that Squamulea subsoluta is active during this time of year in Texas. These observations provide insight into the species' habitat preferences and distribution in East and Central Texas, highlighting its ability to colonize a range of rocky substrates. The species' presence was documented through photographs and field notes.
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