The Phacidiales is a small group of inoperculate discomycetes regarded as being intermediate between the Pyrenomycetes and the Pezizales. The species are mostly parasitic on twigs and leaves of vascular plants, the ascus stages usually appearing only on old wood after it is dead, or on leaves after they have fallen. The apothecia arise in stromata which may be buried in the tissues of the host plant, or superficial. The ascocarps are waxy, leathery, or carbonaceous, round to elongate and covered with an epithecium which opens by means of stellate, longitudinal or irregular fissures when the ascospores are mature.
Proceedings of the Iowa Academy of Science
©1952 Iowa Academy of Science, Inc.
Ervin, Marion D.
"Phacidiales of Iowa,"
Proceedings of the Iowa Academy of Science, 59(1), 89-98.
Available at: https://scholarworks.uni.edu/pias/vol59/iss1/12