At a little distance, this species of Peziza has a striking
resemblance to abortive plants of Parmelia olivácea, to which
its regularly circular fonn greatly contributes. It occurs on
the branches of various trees, as on species of Alnus, Populus,
Salix, Corylus, Prunus, &c. In N. America, S c h a v e in it z
finds it on species of Sambucus.
P e r so o n ’s p . Pruni-avium is certainly nothing more than
our plant in a young state ; and it may he worth observing,
that its complete development depends a good deal upon the
weather. A dry season, and warm sun, often arrest it when
half groAvn, and in that case the cupulæ rarely become perfected.
Fig. 1. P- fusca, nat. size. Fig. 2. A portion magnijled. Fig. 3. A ^
removed. Fig. 4. The same dissected. Fig. 5, A small vertical slice o f the
whole plant.—All magnified except Fig. 1.
