Common button lichen (Buellia stillingiana) on hackberry(?) tree in Washington-on-the-Brazos State Historic Site. Washington, Texas

🎞️ #2820-08
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College Station - Washington-on-the-Brazos, Texas, November 22 - 24, 2020

Album 2820: College Station - Washington-on-the-Brazos, Texas, November 22 - 24, 2020

The image presents a close-up view of the bark of an unidentified type of tree, likely a hackberry (Celtis occidentalis), in Washington-on-the-Brazos State Historic Site, Texas. The tree's bark is primarily light gray with rough patches and fissures.

**Lichen Identification**

The lichen covering the majority of the image appears to be Common Button Lichen (Buellia stillingiana). This lichen has a distinct button-like shape in shades of dark brown to blackish, ranging from 1–5 mm in diameter. The coloration is likely due to the presence of melanin pigments.

**Other Observations**

In addition to the Common Button Lichen, two other lichens are visible on the tree's bark:

* A smaller green-colored lichen with a circular shape
* Another light-colored lichen with a more irregular shape

**Image Details**

The image is presented in portrait orientation and features a shallow depth of field. The background of the image consists solely of the tree's bark, showcasing various lichens that have colonized it.

Overall, the image provides an up-close view of the diverse range of lichens that can be found on trees in Texas. – AI vision

🇪🇸 Descripción en español / Spanish Description

Lichen común del botón (Buellia stillingiana) en el árbol de Hackberry(?) en el sitio histórico estatal Washington-on-the-Brazos. Washington, Texas, 24 de noviembre de 2020. La imagen presenta una vista de cerca de la corteza de un tipo no identificado de árbol, probablemente un hackberry (Celtis occidentalis), en el sitio histórico estatal Washington-on-the-Brazos, Texas. La corteza del árbol es principalmente gris claro con parches y fisuras gruesas. **Identificación de líquenes** El líquen que cubre la mayor parte de la imagen parece ser Líquen común del botón (Buellia stillingiana). Este líquen tiene una forma distintiva de botón en tonos de marrón oscuro a negruzco, con un diámetro de 1–5 mm. La coloración es probablemente debida a la presencia de pigmentos de melanina. **Otras observaciones** Además del Líquen común del botón, son visibles otros dos líquenes en la corteza del árbol: * Un líquen verde más pequeño con una forma circular * Otro líquen más claro con una forma más irregular **Detalles de la imagen** La imagen se presenta en orientación vertical y muestra una profundidad de campo superficial. El fondo de la imagen consta únicamente de la corteza del árbol, mostrando los diferentes líquenes que lo han colonizado. En general, la imagen proporciona una vista cercana de la diversidad de líquenes que se pueden encontrar en los árboles de Texas. – Spanish translation

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