Underside of leaves of squaw-weed (Senecio ampullaceus) with sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) in Lick Creek ParkWeb page of Lick Creek Park by Dept. of Biology of TAMU. College Station, Texas

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College Station - Sam Houston Forest, Texas, March 19 - 22, 2023

Album 3368: College Station - Sam Houston Forest, Texas, March 19 - 22, 2023

The image presents a close-up view of three leaves from squaw-weed (Senecio ampullaceus) plants, lying on their undersides on dirt ground. The leaves feature circular white spots with yellow borders, which appear to be caused by the sunflower white rust fungus Pustula tragopogonis.

The leaves are arranged in a row, with one leaf positioned vertically and two others placed horizontally next to it. The leaves have varying shapes, but all share similar sizes. They also display different levels of damage, as some have holes or tears while others remain intact.

In the top-left corner of the image, small blades of grass can be seen poking out from under the ground. This suggests that the photograph was taken in a natural setting, possibly during a botanical study or fieldwork. The overall atmosphere of the image is one of scientific observation and documentation, highlighting the unique characteristics of the sunflower white rust fungus on squaw-weed leaves. – AI vision

🇪🇸 Descripción en español / Spanish Description

En la cara inferior de las hojas del mosquero (Senecio ampullaceus) con el hongo Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis) (?) en Lick Creek Park. College Station, Texas, 20 de marzo de 2023. La imagen presenta una vista cercana de tres hojas de plantas de mosquero (Senecio ampullaceus), tendidas sobre la tierra en su parte inferior. Las hojas presentan manchas blancas circulares con bordes amarillos, que parecen estar causadas por el hongo Pustula tragopogonis, también conocido como roya blanca del girasol. Las hojas están dispuestas en una fila, una colocada verticalmente y las otras dos horizontales junto a ella. Las hojas tienen formas variables, pero comparten tamaños similares. También presentan diferentes niveles de daño, algunas con agujeros o desgarros, mientras que otras permanecen intactas. En la esquina superior izquierda de la imagen, se pueden ver pequeñas hojitas de hierba sobresaliendo del suelo. Esto sugiere que la fotografía fue tomada en un entorno natural, posiblemente durante un estudio botánico o un trabajo de campo. La atmósfera general de la imagen es de observación científica y documentación, destacando las características únicas del hongo Pustula tragopogonis en las hojas del mosquero. – Spanish translation

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