Synonyms: Calicium capillare, Calicium claviculare, Calicium minutellum, Calicium pallescens, Calicium parietinum, Calicium parvulum, Calicium sphaerocephalum, Calicium subtile, Chaenotheca parietina, Cyphelium parietinum, Mycocalicium minutellum, Mycocalicium pallescens, Mycocalicium parietinum.
Mycocalicium subtile is a crustose lichen that grows on calcareous substrates, particularly limestone and dolostone rocks. In East and Central Texas, it forms thin, yellowish to orange-colored patches with a subtle, powdery appearance. The thallus is typically smooth and continuous, with occasional small, rounded warts or pustules. Apothecia are rare, but when present, they are small and immersed, with a yellow to orange disc. This lichen is often found in shaded to partially shaded areas, such as overhangs, rocky outcrops, and tree trunks, particularly in the Edwards Plateau and Blackland Prairie regions of Texas.
Stickpins lichen Mycocalicium subtile or may be other Mycocaliciaceae (Mycocalicium, Chaenothecopsis) on a trunk of a juniper tree (Eastern red cedar) where its branch was cut, around 1.5 meters above ground, in McKinney Roughs Nature Park near Austin. Texas, March 17, 2021
223 River Oaks Dr, Cedar Creek, TX 78612, USA
Close-up of stickpins lichen Mycocalicium subtile or may be other Mycocaliciaceae (Mycocalicium, Chaenothecopsis) on a trunk of a juniper tree (Eastern red cedar) on spot where its branch was cut in McKinney Roughs Nature Park near Austin. Texas, March 17, 2021223 River Oaks Dr, Cedar Creek, TX 78612, USAObservations of Mycocalicium subtile in East and Central Texas reveal the species' presence on juniper trees, specifically Eastern red cedars. On March 17, 2021, at McKinney Roughs Nature Park near Austin, the lichen was found growing on a trunk where a branch had been cut, approximately 1.5 meters above ground. A closer examination of the area revealed a dense growth of stickpins lichen, potentially including other Mycocaliciaceae species such as Chaenothecopsis. The specific location and conditions under which the lichen was found suggest a preference for disturbed or altered environments, such as areas where branches have been cut or damaged. Further study is needed to confirm the identity of the species and fully understand its habits and distribution in the region. The observations highlight the importance of examining tree trunks and branches for lichen growth.
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