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1905] THAXTER—NEW SPECIES OF WYNNEA 245 
A comparative examination of the spores in all three species 
shows that when fully mature all are characterized by the presence 
of longitudinal markings, apparently corresponding to slight depres- 
sions and somewhat roughened intervening elevated regions which 
extend the whole length of the spores. Although these markings 
are conspicuous in the Carolina species, they are hardly visible until 
the numerous oily globules with which the spores are originally filled 
(jig. 4, upper spore) have been obliterated by treatment with glycerine 
or otherwise (fig. 4, two lower spores). While they are much less striking 
in W. gigantea, they are nevertheless readily seen (fig. 8), but in the 
material of W.macrotis received from Mr. MasseEE, they are exceedingly 
faint, possibly owing to the fact that the spores may not have been 
thoroughly matured. In all three species the spores are charac- 
teristically inequilateral, being more strongly curved on one side 
than on the other, apparent deviations from this rule being probably 
in all cases due to differences in the point of view. While in W. 
macrotis and W. gigantea they are bluntly rounded, they are more 
or less conspicuously apiculate or papillate at each extremity in 
the Carolina species, and the spore as a whole is distinctly larger. 
The spores of W. macrotis sent by Mr. MassEE (fig. 7) are slightly 
smaller than those of W. gigantea; but the difference is insignificant, 
and could not serve to distinguish the species in the absence of other 
distinctive characters. Nevertheless it seems more desirable to 
retain both the Berkeleyan species until further data may be obtained 
by a re-examination of fresh material. 
For convenience of reference the original descriptions of BERKE- 
LEY are quoted below. The genus may be characterized as 
follows, the sclerotium of the Carolina form being assumed to occur 
in the other species as well. 
WYNNEA Berkeley & Curtis, Jour. Linn. Soc. 9:124. 1866. 
Apothecia thick, firm, subcartilaginous, tough and subcoriaceous 
on drying, erect, elongate, ear-shaped, simple or subproliferous, 
several- to many-clustered on a common stalk arising from a sclerotium 
buried in the substratum. Paraphyses cylindrical, simple or branched. 
Asci cylindrical, tapering to an elongated base penetrating the sub- 
hymenium with the filaments of which it is continuous, without 
articulation. Spores large, inequilateral. 
