ABSTRACT: The family Teichosporaceae is proposed to include eight genera, most of them previously assigned to the lichenicolous Dacampiaceae. New species are described as Byssothecium cholla, Sinodidymella americana, and S. hesperia. New combinations are proposed for Pleospora obiones in Byssothecium, for Trematosphaeria cactorum in Chaetomastia, for Didymosphaeria atroseptata in Immothia, and for Melanopsammina utahensis in Sinodidymella.

KEYWORDS: systematics, saprotrophs

NOMENCLATURAL NOVELTIES:
Byssothecium cholla M.E. Barr, p. 380
Byssothecium obiones (P. Crouan & H. Crouan) M.E. Barr, p. 378
Chaetomastia cactorum (Earle) M.E. Barr & Boise, p. 381
Immotthia atroseptata (Piroz.) M.E. Barr, p. 383
Sinodidymella americana M.E. Barr, p. 384
Sinodidymella hesperia M.E. Barr, p. 385
Sinodidymella utahensis (Petr.) M.E. Barr, p. 384
TEICHOSPORACEAE M.E. Barr, p. 374