Close-up of oak leaf anthracnose (leaf spot fungus, Dicarpella dryina, Tubakia dryina) on Richards Loop Trail in Sam Houston National Forest. Texas

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Sam Houston Forest, Texas, May 10, 2020

Album 2704: Sam Houston Forest, Texas, May 10, 2020

The image presents a close-up view of an oak leaf affected by anthracnose, also known as leaf spot fungus (Dicarpella dryina or Tubakia dryina). The photo was taken on Richards Loop Trail in Sam Houston National Forest, Texas.

* **Oak Leaf**: The foreground features two distinct green sections of the same leaf. The left section appears slightly smaller and has a more rounded tip compared to the right section.
* *The upper portion of the leaf is significantly larger, with numerous veins radiating from the central stem towards the edge.*
* *The veins are light green in color, while the leaf itself is darker green.*
* **Leaf Spot Fungus (Anthracnose)**: The fungus has caused circular brown spots to form on both sections of the leaf. These spots feature a red-brown center and have white speckles within them.
* *The spots range in size from approximately 1/4 inch to 3/4 inch.*
* *Some spots are clustered together, while others appear solitary.*
* **Leaf Veins**: The leaf's veins provide a clear visual representation of its structure. The veins are light green and have a slightly wavy appearance.
* *The veins are more pronounced on the upper section of the leaf, giving it a slightly thicker texture.*

In summary, this image showcases an oak leaf suffering from anthracnose, characterized by circular brown spots with red-brown centers and white speckles. The leaf's structure is evident through its light green veins, which provide support to the leaf's surface. – AI vision

🇪🇸 Descripción en español / Spanish Description

Primer plano de la antracnosis del roble (hongo mancha en las hojas, Dicarpella dryina, Tubakia dryina) en el Richards Loop Trail en el Bosque Nacional Sam Houston, Texas, el 10 de mayo de 2020. La imagen presenta una vista de primer plano de una hoja de roble afectada por antracnosis, también conocida como hongo mancha en las hojas (Dicarpella dryina o Tubakia dryina). La foto fue tomada en el Richards Loop Trail en el Bosque Nacional Sam Houston, Texas. * **HOJA DEL ROBLE**: En primer plano se muestran dos secciones verdes distintas de la misma hoja. La sección izquierda es ligeramente más pequeña y tiene una punta más redonda en comparación con la sección derecha. * *La parte superior de la hoja es significativamente más grande, con numerosas venas que parten del tallo central hacia el borde.* * *Las venas son de color verde claro, mientras que la hoja en sí es de un verde más oscuro.* **HONGO MANCHA EN LAS HOJAS (ANTRACNOSI):** El hongo ha causado la formación de manchas circulares marrones en ambas secciones de la hoja. Estas manchas tienen un centro marrón rojizo y presentan moteados blancos dentro de ellas.* *Las manchas varían en tamaño desde aproximadamente 1/4 de pulgada hasta 3/4 de pulgada.* *Algunas manchas están agrupadas, mientras que otras aparecen solitarias.* **VENAS DE LAS HOJAS**: Las venas de la hoja proporcionan una representación visual clara de su estructura. Las venas son verdes claros y tienen un aspecto ligeramente ondulado. * *Las venas son más prominentes en la sección superior de la hoja, dándole un tacto ligeramente más grueso.* En resumen, esta imagen muestra una hoja de roble afectada por antracnosis, caracterizada por manchas circulares marrones con centros marrón-rojizos y moteados blancos. La estructura de la hoja es evidente a través de sus venas verdes claras, que le dan soporte a la superficie de la hoja. – Spanish translation

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