Bruce Watt, University of Maine, Bugwood.org
Infected foliage
Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
Tan/brown spots with broad, darker brown border.
Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
Close-up of one spot on upperside of leaf with raised, dark, spore-producing bodies ("acervuli").
Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
One spore-producing body ("acervulus").
Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org
leaf spot (Tubakia dryina) asexual spore on post oak (Quercus stellata)
Florida Division of Plant Industry , Florida Department of Agriculture and Consumer Services, Bugwood.org
leaf spot (Tubakia dryina) symptoms on laurel oak (Quercus laurifolia)
Florida Division of Plant Industry , Florida Department of Agriculture and Consumer Services, Bugwood.org
leaf spot (Tubakia dryina) symptoms on water oak (Quercus nigra)
Florida Division of Plant Industry , Florida Department of Agriculture and Consumer Services, Bugwood.org
leaf spot (Tubakia dryina) symptoms on sassafras (Sassafras albidum)
Florida Division of Plant Industry , Florida Department of Agriculture and Consumer Services, Bugwood.org
leaf spot (Tubakia dryina) symptoms on sassafras (Sassafras albidum)
Elizabeth Bush, Virginia Polytechnic Institute and State University, Bugwood.org
pycnothyrium and conidia
Jason Sharman, Vitalitree, Bugwood.org
leaf spot (Tubakia dryina) damage on northern red oak (Quercus rubra)
Jason Sharman, Vitalitree, Bugwood.org
leaf spot (Tubakia dryina) damage on oak (Quercus spp.)