Abstract
22 spp. are discussed, the following being new: CAULOCARPA montana, Hydnotrya variiformis, H. yukonensis, and Terfezia longii Hydnotrya ellipsospora Gilkey ( = Geopora glabra); the discovery in America of Terfezia gigantea, previously known only from Japan, is recorded; keys for Hydnotrya and Terfezia in America are included; and new distr. data are listed for 14 previously described spp.

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