Bright orange mayapple rust fungus Allodus podophylli (Puccinia podophylli) on underside of leaves of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. 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 depicts a close-up photograph of an orange mayapple rust fungus, specifically Allodus podophylli or Puccinia podophylli, growing on the underside of May apple leaves (Podophyllum peltatum). The photo was taken on March 21, 2023.

**Leaf Structure**

* The leaves are green and have a central vein that extends from the petiole to the tip.
* They have five lobes or divisions, with one large lobe in the center and four smaller ones surrounding it.
* Water droplets can be seen on the surface of the leaves.

**Fungus Appearance**

* The fungus appears as bright orange powdery patches on the underside of the leaf.
* These patches are irregularly shaped and vary in size, ranging from small spots to larger areas.
* They seem to grow in clusters or patches, rather than being isolated.

**Background**

* The background is composed of dark brown mulch or wood chips, with some green grass blades visible at the bottom left corner of the image.
* Small twigs and other plant debris are scattered throughout the background.

**Overall Impression**

The image suggests that the mayapple rust fungus has infected the May apple leaves. This type of infection is common in many plants and can be caused by various factors such as poor air circulation, high humidity, or the presence of other diseases. The bright orange coloration of the fungus makes it stand out against the green leaves.

**Summary**

The image shows an orange mayapple rust fungus growing on the underside of May apple leaves. The fungus appears as bright orange powdery patches and is likely caused by poor air circulation or high humidity. – AI vision

🇪🇸 Descripción en español / Spanish Description

Muestra una estructura de hojas en la que las hojas son de color verde y tienen una vena central que se extiende desde el mascarón hasta la punta. Tiene cinco lóbulos o divisiones, con un lóbulo grande en el centro y cuatro más pequeños rodeándolo. Pueden observarse gotas de agua sobre la superficie de las hojas. El aspecto del hongo aparece como manchas naranja brillante en polvo en la parte inferior de las hojas. Estas manchas tienen forma irregular y varían en tamaño, desde pequeños puntos hasta áreas más grandes. Parecen crecer en grupos o parches, en lugar de estar aislados. El fondo está compuesto por una mezcla oscura de astillas o virutas de madera, con algunas hojas de hierba verde visibles en la esquina inferior izquierda de la imagen. Pueden observarse pequeñas ramitas y otros restos de plantas dispersos por todo el fondo. La impresión general es que el hongo ha infectado las hojas de May apple. Este tipo de infección es común en muchas plantas y puede ser causada por varios factores, como mala circulación del aire, alta humedad o la presencia de otras enfermedades. El color naranja brillante del hongo hace que se destaque contra las hojas verdes. Resumen: La imagen muestra un hongo rojizo de manchas en polvo creciendo sobre las hojas de May apple. Es probable que el hongo sea causado por mala circulación del aire o alta humedad. – Spanish translation

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