A revision of the genus Orthotrichum in North America, north of Mexico. Bryophytorum Bibliotheca. 1:208.. 1973.
Additional bryophytes from sink-holes in Alpena County, Michigan, including Orthotrichum pallens new to eastern North America. Michigan Botanist. 9:87-94.. 1970.
An analysis of the vegetation of Sphagnum-dominated kettle-hole bogs in relation to environmental gradients. Canadian Journal of Botany. 53:332-259.. 1975.
The infrageneric evolution, phylogeny, and taxonomy of the genus Orthotrichum (Musci) in North America. Nova Hedwigia. 21:683-711.. 1971.
Sex determination in mosses. Michigan Botanist. 7:195-203.. 1968.
The vertical zonation of Sphagnum species in hummock-hollow complexes in northen Michigan. Michigan Botanist. 14:190-200.. 1975.
The family Orthotrichaceae (Musci) in North American, north of Mexico. Doctor of Philosophy:462pp... 1971.