Synonym: Lepraria xanthina.
Common name: gold dust lichen.
Chrysothrix xanthina is a yellow to golden crustose lichen that grows on trees, rocks, and soil. In East and Central Texas, it is commonly found on the trunks and branches of deciduous and evergreen trees, particularly oak, elm, and cedar, as well as on calcareous rocks and outcrops. The thallus is thin and patchy, with a powdery to granular texture, and produces yellow soredia. It thrives in shaded to partially shaded areas with high humidity, and is often associated with other lichens and mosses.
Gold dust lichen Chrysothrix xanthina and some green lichen on tree bark on Racoon Run Trail in Lick Creek Park. College Station, Texas, July 17, 2013
Raccoon Run, College Station, TX 77845, USA
Gold dust lichen Chrysothrix xanthina on tree bark on Turkey Creek Trail. Bryan, Texas, January 29, 20191701 Gray Stone Dr, Bryan, TX 77807, USA
Golden dust lichen Chrysothrix xanthina with a folious lichen on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Golden dust lichen Chrysothrix xanthina on tree bark in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Gold dust lichen (Chrysothrix xanthina) in McKinney Roughs Nature Park near Austin. Texas, March 17, 2021Unnamed Road, Cedar Creek, TX 78612, USAObservations of Chrysothrix xanthina in East and Central Texas reveal its presence on tree bark in various locations. In College Station, it was found on Racoon Run Trail in Lick Creek Park, growing alongside green lichen, on July 17, 2013. The species was also spotted on Turkey Creek Trail in Bryan on January 29, 2019. In the Big Creek Scenic Area of Sam Houston National Forest, near Shepherd, Texas, it was observed on February 1, 2019, both alone and with a folious lichen on trees. Additionally, Chrysothrix xanthina was found in McKinney Roughs Nature Park near Austin on March 17, 2021. These sightings indicate that the species is widespread in East and Central Texas, thriving on tree bark in different environments and locations. The observations span several years, suggesting a stable presence of the species in the region.
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