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, 1997. Platanthera purpurascens. North American Native Orchid Journal 3, 444-449.
, 1998. New Chromosome Number Determinations in Platanthera. North American Native Orchid Journal 4, 168-172.
, 1999. The identities of Platanthera hyperborea and P. huronensis, with the description of a new species from North America. Lindleyana 14, 193-203.
, 2000. The Northeastern Members of the Platanthera hyperborea Complex (Orchidaceae). North American Native Orchid Journal 6, 280-286.
, 2000. Refinements In Our Understanding of Some Green Platantheras. North American Native Orchid Journal 6, 88-92.
, 1999. Platanthera hyperborea and a Reappraisal of Green Platantheras. North American Native Orchid Journal 5, 117-141.
, 2001. A role for water droplets in the pollination of Platanthera aquilonis (Orchidaceae). Rhodora 103, 380-386.
, 2003. Tales from the Field. Members Update 14, 4-5.
, 2003. Garden cultivation of North American Cypripedium species. Paphiopedilum Review 6, 22-23.
, 2004. Do Cucurbita pepo Gourds Float Fish Nets?. American Antiquity 69, 141-148. doi:10.2307/4128352