VIEW ARTICLE

Kaskaskia gleditsiae gen. et sp. nov. Parasitic on Thornless Honey Locust in Illinois. Gerald L. Born, Illinois Natural History Survey, Urbana 61801; J. L. Crane, Illinois Natural History Survey, Urbana 61801. Phytopathology 62:926-930. Accepted for publication 1 March 1972. DOI: 10.1094/Phyto-62-926.

Kaskaskia gleditsiae gen. et sp. nov. is parasitic on thornless honey locust, causing extensive necrosis and eventual cracking and peeling of the bark in the trunk area under conditions of natural infection. Inoculations produced sunken cankers with necrosis, cracking, and peeling of the bark tissue. In natural and experimental infections, a brown discoloration of the sapwood was observed above and below the margin of the diseased bark. The fungus is characterized by an aggregation of nonostiolate pycnidia on a fleshy hypostroma; hyaline, septate conidiophores, each of which consists of a basal cell bearing a series of radiating, sterile, or conidiogenous branches; and 1-celled, phialidic, hyaline conidia.