Rhizosphaera needle cast (Rhizosphaera kalkhoffii) in Southern Plant Diagnostic Network

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close up of infected needles with pycnidia (top) and healthy needle (bottom)

Michael Kangas, NDSU - North Dakota Forest Service, Bugwood.org

close up of infected needles with pycnidia (top) and healthy needle (bottom)

Rhizosphaera needle cast (<em>Rhizosphaera kalkhoffii</em>) symptoms on blue spruce (<em>Picea pungens</em>)

USDA Forest Service - North Central Research Station , USDA Forest Service, Bugwood.org

Rhizosphaera needle cast (Rhizosphaera kalkhoffii) symptoms on blue spruce (Picea pungens)

Rhizosphaera needle cast (<em>Rhizosphaera kalkhoffii</em>) symptoms on blue spruce (<em>Picea pungens</em>)

USDA Forest Service - North Central Research Station , USDA Forest Service, Bugwood.org

Rhizosphaera needle cast (Rhizosphaera kalkhoffii) symptoms on blue spruce (Picea pungens)

Conidiomata emerging from stomatal pores of a necrotic needle.

Edward L. Barnard, Florida Department of Agriculture and Consumer Services, Bugwood.org

Conidiomata emerging from stomatal pores of a necrotic needle.

Rhizosphaera needle cast on white spruce. Off color foliage.

Joseph OBrien, USDA Forest Service, Bugwood.org

Rhizosphaera needle cast on white spruce. Off color foliage.

Rhizosphaera needle cast symptoms on white spruce.

Joseph OBrien, USDA Forest Service, Bugwood.org

Rhizosphaera needle cast symptoms on white spruce.

Brown, infected needle with pycnidia of the fungus Rhizosphaera kalkhoffii coming from the stomata.

Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org

Brown, infected needle with pycnidia of the fungus Rhizosphaera kalkhoffii coming from the stomata.

Brown, infected needle with pycnidia of the fungus Rhizosphaera kalkhoffii coming from the stomata.

Paul Bachi, University of Kentucky Research and Education Center, Bugwood.org

Brown, infected needle with pycnidia of the fungus Rhizosphaera kalkhoffii coming from the stomata.