To determine the distribution and diversity of the rust Pseudocerradoa on Monstera species (e.g., Swiss cheese plant, split-leaf philodendron, five-holes plant, etc.), the USDA Mycology and Nematology Genetic Diversity and Biology Laboratory is seeking fresh specimens from across the United States. Symptoms of this disease include small chlorotic leaf spots that expand and become brown to reddish-brown, often with a yellow halo, and uredinia with abundant urediniospores (Urbina et al., 2023) (Figure 1).

We are excited to kick off the 2025 GPDN Webinar Series! This annual series is a great opportunity to discuss topics that affect our network and partners.