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Sunken bloodspot lichen (Haematomma persoonii...in Sam Houston National Forest. Texas  
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Sunken bloodspot lichen (Haematomma persoonii) with other crustose lichens on a recently fallen oak on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, December 26, 2020

Location on mapsLone Star Hiking Trail, Montgomery, TX 77356, USA
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On a recently fallen oak tree along the Stubblefield section of the Lone Star hiking trail north of Trailhead No. 6 in Sam Houston National Forest, Texas, various crustose lichens can be seen growing, including the sunken bloodspot lichen (Haematomma persoonii). This was captured on camera on December 26, 2020. – generated by AI

The provided image presents a close-up view of a tree trunk, featuring a diverse array of lichens growing on its surface. The dominant crustose lichen is **Haematomma persoonii**, characterized by its reddish-brown apothecia (the fruiting bodies) that are sunken into the thallus (the vegetative part). These apothecia resemble small, circular depressions with a reddish-brown coloration. The lichens occupy most of the image's width and height, while the bark is visible between them.

The surrounding lichen species are characterized by their grayish-green hue and flat growth habit. They cover much of the tree trunk, but do not appear as dominant as **Haematomma persoonii**. The base of a fallen oak tree, likely from the Quercus genus, provides the substrate for these lichens to grow.

The image was captured in December 2020 on a recently fallen oak tree in Sam Houston National Forest. The location is specifically identified as Trailhead No. 6. – AI vision

Lichen hematomático sumergido (Haematomma persoonii) con otros líquenes costrosos en un roble recién caído en la sección Stubblefield del sendero de excursión Lone Star al norte desde el punto de partida n. ° 6 en Sam Houston National Forest. Texas, 26 de diciembre de 2020. La imagen proporcionada presenta una vista detallada de un tronco de árbol, con una variedad diversa de líquenes creciendo en su superficie. El líquen costroso dominante es **Haematomma persoonii**, caracterizado por sus apotecios (los cuerpos fructíferos) pardorrojizos que están sumergidos en el talo (la parte vegetativa). Estos apotecios se asemejan a pequeñas depresiones circulares de coloración pardorrojiza. Los líquenes ocupan la mayor parte del ancho y altura de la imagen, mientras que la corteza es visible entre ellos. Las especies de líquenes circundantes se caracterizan por su tono verde grisáceo y su hábitat de crecimiento plano. Cubren gran parte del tronco del árbol, pero no parecen dominar como **Haematomma persoonii**. La base de un roble caído, probablemente del género Quercus, proporciona el sustrato para que estos líquenes crezcan. La imagen se capturó en diciembre de 2020 en un roble recién caído en Sam Houston National Forest. La ubicación está especificamente identificada como punto de partida n. ° 6. – Spanish translation


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