Graphis lineola is a crustose lichen that grows on trees, typically on the bark of deciduous species. It has a white to grayish thallus with black, linear exciples and simple, apically rounded lirellae. In East and Central Texas, Graphis lineola is commonly found on oaks, elms, and other hardwoods, often in shaded, humid areas such as creek banks and woodland edges. The species is widespread in the region, with records from several counties, including Bastrop, Brazos, Grimes, and Houston.
Script lichen Graphis lineola on bark of a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 29, 2018
23306 FM 1155, Washington, TX 77880, USA
Script lichen Graphis lineola and other crustose lichens on bark of a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 29, 2018Unnamed Road, Washington, TX 77880, USA
Script lichen Graphis lineola(?) on bark of a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020Observations of Graphis lineola in East and Central Texas indicate that it thrives on the bark of hackberry trees. In Washington, Texas, specifically at the Washington-on-the-Brazos State Historic Site, the lichen was found on multiple occasions. On December 29, 2018, Graphis lineola was observed growing alone and in combination with other crustose lichens on the bark of a hackberry tree. A similar observation was made on November 3, 2020, although the identification of Graphis lineola was tentative. The consistent presence of this species on hackberry trees suggests a possible preference for this substrate. These findings contribute to our understanding of the habitat preferences and distribution of Graphis lineola in East and Central Texas. The co-occurrence with other crustose lichens also highlights the diversity of lichen communities in this region.
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