86 HARPER: TWO REMARKABLE DISCOMYCETES 
striking feature of Pustularia gigantea is the extent to which the 
walls are infolded The mouth is completely inverted and lies on 
_ the bottom of the cup. In this the plant appears to be unique. 
Explanation of plates 1-3 
PLATE 1. UNDERWOODIA COLUMNARIS Peck 
A, upper half of the left branch of a large plant; B, lower half of the plant. 
PLATE 2. UNDERWOODIA COLUMNARIS Peck 
A, longitudinal and cross sections; B, ascus and paraphyses; C, one of a pair 
of plants grown together at the base. 
PLATE 3. PUSTULARIA GIGANTEA Rehm 
A, expanded plant. 3B, vertical section through an unopened apothecium; C, 
asci and paraphyses. 
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