Proc. Calif. Acad. Sci., ser. 3, Bot. 1: 246. 1899.
Common Name: none
Synonyms: Dendrogaster utriculatus (Harkness) Zeller & Dodge; Thiersia utriculatus nom. prov.
Hypogeous in mixed woods; winter.
The spore ornamentation of Hymenogaster utriculatus is unlike anything in Hymenogaster and this species belongs in a different genus, but to our knowledge this transfer has not been made. The generic name Thiersia was proposed for Hymenogaster utriculatus in the 1980's but was never published; that name would be invalid for this taxa since Thiersia is a genus of vascular plants in the Rubiaceae.
Desjardin, D.E., Wood, M.G. & Stevens, F.A. (2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
Dodge, C.W. & Zeller, S.M. (1934). Hymenogaster and related genera. Ann. Missouri Bot. Gard. 21: 625-708.
Harkness, H.W. (1899). Californian hypogeous fungi. Proc. Calif. Acad. Sci., ser 3 1: 241-292. (Protologue)