62 LEVINE: SPORADIC APPEARANCE OF NON-EDIBLE MUSHROOMS 
these plants grew. However, the description and published 
illustrations* of Tricholoma melaleucum best fit this plant. The 
sporophores I found are somewhat larger than the type described 
by Murrill, whose herbarium material I compared with my 
plants. The pileus is larger than this type and measures 3-9 
cm. in diameter, while in height the plant agrees with the 
description. The pileus is thin, convex to plane and depressed. 
The margin is lobed and may become divided into a number of 
segments as shown in Fic. 23. The color of the pileusis drab 
to light drab (Ridgw.). The gills in these specimens were not 
very white, as described by Murrill, but drab gray. The spores of 
this plant agree perfectly with those of T. melaleucum. The 
stipe is even, although it may be enlarged at the top and at the 
base. The surface is reticulately veined as shown in Fic. 21 and 
in this respect is unlike the description. Its color agrees with the 
description. Up to the present T. melaleucum has been reported 
as found only in woods, fields and lawns. Its habit is solitary 
and the plants found in the mushroom beds were solitary, although 
they tended to be cespitose. 
Peziza domiciliana Cooke} (PLATES 4, FIGS. 18-20). The Peziza 
shown in Fics. 18-20 is common in all the mushroom houses 
studied. It makes its appearance as early as November and can 
also be found late in the spring. The plants generally appeared 
before and during the growth of the mushrooms. I am indebted 
to Dr. Seaver for the identification. While the plants agree in 
the main with the description given for P. domiciliana, there are 
some differences. The apothecia grow singly or gregariously but 
never caespitose. The outer surface of the cup has a white 
granular appearance and the color of the hymenium is pale ochra- 
ceous salmon (Ridgw.) when young, to Dresden brown, when old, 
instead of ochraceous buff or dungy buff as given by Overholtz 
and Seaver. While the spores are ellipsoidal and hyaline when 
young, and in this agree with the description already published, 
they are slightly smaller in size. 
A considerable number of species of Coprinus us in the 



* See Barla. Les via etdancics des Alves Matias, pl. 46,f.8-15. 1888. 
t See Seaver, F. J. Development of the cup Fungi. Mycologia 8: 195-198. 
pl. 188, 789. 10916, 
