Close up of fringe lichen (Heterodermia) on small cedar elm tree in Washington-on-the-Brazos State Historic Site. Washington, Texas

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College Station - Washington-on-the-Brazos, Texas, January 22- 23, 2019

Album 2433: College Station - Washington-on-the-Brazos, Texas, January 22- 23, 2019

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This close-up photograph presents a detailed view of a small cedar elm tree trunk covered in a lichen known as fringe lichen (Heterodermia). The lichen is characterized by its grayish-green color and irregularly shaped thalli, which are typically 1-3 cm wide. The thalli have a distinctive fringed appearance due to the presence of long, wavy lobes.

**Key Features:**

* **Thallus Structure:** The thalli are flat and broad, featuring multiple lobes that create a fringed effect.
* **Lobation:** Each lobe is roughly triangular in shape and has a pointed tip. The lobes are spaced irregularly along the length of each thallus.
* **Coloration:** The fringe lichen displays a grayish-green color with light green to yellowish margins on the edges of its lobes.
* **Texture:** The surface of the thalli appears rough and powdery, likely due to the presence of spores or other reproductive structures.

**Background:**

The background of the image is not visible due to the close-up nature of the photograph. However, it can be inferred that the tree trunk provides a natural habitat for the fringe lichen, with its rough bark offering a suitable surface for colonization. – AI vision

🇪🇸 Descripción en español / Spanish Description

Primer plano del líquen con borlas (Heterodermia) en un pequeño olmo de cedro en el sitio histórico estatal Washington-on-the-Brazos. Washington, Texas, 23 de enero de 2019. Esta fotografía en primer plano muestra una vista detallada del tronco de un pequeño olmo de cedro cubierto de un líquen conocido como líquen con borlas (Heterodermia). El líquen se caracteriza por su color verde grisáceo y los talos de forma irregular, que miden típicamente entre 1-3 cm de ancho. Los talos tienen un aspecto con borlas distintivo debido a la presencia de lóbulos ondulados largos. **Características clave:** * **Estructura del tallo:** Los talos son planos y anchos, con múltiples lóbulos que crean un efecto de borlas. * **Lobulación:** Cada lóbulo tiene una forma aproximadamente triangular y tiene una punta puntiaguda. Los lóbulos están espaciados irregularmente a lo largo del tallo. * **Coloración:** El líquen con borlas presenta un color verde grisáceo con márgenes verdes claros a amarillentos en los bordes de sus lóbulos. * **Textura:** La superficie de los talos parece rugosa y pulverulenta, probablemente debido a la presencia de esporas u otras estructuras reproductivas. **Antecedentes:** El fondo de la imagen no es visible debido a la naturaleza en primer plano de la fotografía. Sin embargo, se puede deducir que el tronco del árbol proporciona un hábitat natural para el líquen con borlas, con su corteza rugosa ofreciendo una superficie adecuada para su colonización. – Spanish translation

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