The image depicts a close-up view of an infected leaf from the plant species squaw-weed (Senecio ampullaceus), which is affected by the sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis). The infection has caused the leaf to develop irregularly shaped patches of discoloration in shades of brown and yellow. These patches are scattered across the leaf's surface, with some areas appearing more severely affected than others.
The plant is set against a background of other leaves and twigs from its natural environment, which can be seen at the edge of the image. Overall, the photograph provides a clear view of the fungal infection that has affected this particular leaf, allowing for observation and analysis of its effects on the plant's appearance. – AI vision
El "Squaw-weed" (Senecio ampullaceus) con el hongo del "moho blanco de las margaritas" Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) en el Sitio Histórico Estatal de Washington-on-the-Brazos. Washington, Texas, 6 de marzo de 2023. La imagen muestra una vista detallada de una hoja infectada de la especie de planta "Squaw-weed" (Senecio ampullaceus), afectada por el hongo del "moho blanco de las margaritas" Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis). La infección ha provocado que la hoja desarrolle parches irregulares de decoloración en tonos marrones y amarillos. Estos parches están dispersos por toda la superficie de la hoja, apareciendo algunas áreas más afectadas que otras. La planta se sitúa sobre un fondo de otras hojas y ramitas de su hábitat natural, que puede observarse en el borde de la imagen. En general, la fotografía proporciona una vista clara de la infección fúngica que ha afectado a esta hoja en particular, permitiendo su observación y análisis de sus efectos en el aspecto de la planta. – Spanish translation
Similar(1): Underside of a leaf of squaw-weed (Senecio ampullaceus) with sunflower ... Historic Site. Washington, Texas, March 6, 2023
Similar(2): Leaves of squaw-weed (Senecio ampullaceus) with light yellow areas on ... Historic Site. Washington, Texas, March 6, 2023
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Similar(8): Underside of a leaf of squaw-weed (Senecio ampullaceus) with sunflower ... Somerville Lake State Park. Texas, March 5, 2023