Home

Exposed canker on branch of grapefruit (cv. Star Ruby) tree with black mass of spores (arthrospores) due to bot gummosis, caused by the pathogen Neoscytalidium spp.

Tree branch peeling bark and black mass of fungal spores beneath. Below is human hand with fingers black from touching the black spore mass. Credit: Themis J. Michailides, Kearney Agricultural Research and Extension Center, Parlier
Credit: Themis J. Michailides, Kearney Agricultural Research and Extension Center, Parlier
UC IPM logo with an outline of the state of california in the back drop and the UC ANR logo below.
Home and Landscape: Instagram | Facebook
Use Permissions and Citations | Nondiscrimination Statement | Acknowledgements | Accessibility | Privacy Statement | Staff-Only Page

©1996—2025 Statewide IPM Program, Agriculture and Natural Resources, University of California Regents of the University of California unless otherwise noted.