Skip Navigation
Return to Layout View | Home | A-Z Directory | MaineStreet | Campus Map | Calendar
Follow UMaine on Twitter | Join UMaine on Facebook | Watch UMaine on YouTube | Admissions | Parents & Family | Apply to UMaine | Give Now | Emergency

UMaine Cooperative Extension: Insect Pests, Ticks & Plant Diseases

Site Navigation:

Plant Disease Images - Oak – Botryosphaeria Canker Pathogen

Botryosphaeria quercuum

Signs/Symptoms Images


Image Description: Print Friendly

Image Description: Conidioma and immature ascomata

Image Description: Conidioma

Image Description: Immature ascoma

Image Description: Spermagonium

Image Description: Ascus

Image Description: Ascospores amid paraphyses

Image Description: Conidia on conodiophores

Image Description: Conidium

Back to Plant Disease Images


University of Maine Cooperative Extension

Contact Information

UMaine Cooperative Extension: Insect Pests, Ticks & Plant Diseases
491 College Avenue
Orono, Maine 04473-1295
Phone: 207.581.3880, 800.287.0279 (in Maine) or 800.287.8957 (TDD)E-mail:
The University of Maine
Orono, Maine 04469
A Member of the University of Maine System