Peridermium definitions

peridermium

A blister-like aecium as in the form genus Peridermium. (Pl. peridermia.)
Found on http://ppathw3.cals.cornell.edu/glossary/Defs_P.htm

---

Peridermium

An aecium, of the sort found in Cronartium, Melampsora, and Coleosporium, with a peridium that extends prominently beyond the chains of aeciospores.
Found on http://www.encyclo.co.uk/visitor-contributions.php

---