The North American species of Psathyrella.

APPENDIX II

Text Figures
The drawings were made with the aid of a camera-lucida and as reproduced
those of spores are approximately 120Ox and those of cystidia and cuticular features about 850x. These drawings were made over a period of 30 years with
different microscopes, so for accurate comparisons as to size compare the measurements given in the descriptions. The indications of the germ pore on the spores
are schematic and designed to indicate the width of the pore, not the detailed
structure.

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