Cryphonectria parasitica

All pictures from Ministry of Agriculture (HU)
(click on the images to enlarge them)

Characteristic mycelial fan of C. parasitica
in the inner bark of a chestnut tree.

Swelling and bark cracking on
13-year-old chestnut tree.

Sunken area on bark of a young
chestnut tree. Note adventitious shoots arising below the dead patch.


Long, orange-yellow tendrils of C. parasitica pycnidiospores exuding from pycnidia on chestnut tree bark.	Orange-yellow pycnidia of C. parasitica on chestnut tree bark.