Life Sciences Commons^™

A Taxonomic Study Of The Genus Galium In Minnesota, John E. Seaholm

Journal of the Minnesota Academy of Science

Galium is quite a commonplace, cosmopolitan genus in Minnesota. Most naturalists are familiar with one or more species such as the Northern Bedstraw, G. boreale, and Goosegrass, G. aparine. However, it may come as a surprise to many to learn that there are a total of eleven species and two varieties of Galium found growing within the boundaries of the state.

Because of the difficulties met with in trying to tell the species apart, it was realized soon after this study was initiated that a need existed for a clarification of their taxonomy as it related to the state flora. …

Sporulation Of Helminthosporium Dictyoides On Filter Paper, G. A. Bean, Roy D. Wilcoxson

Journal of the Minnesota Academy of Science

Helminthosporium dictyoides Drechs. and H. sativum Pam. King and Bakke were the fungi most commonly isolated from plants of Poa pratensis L. infected with leaf spot in Minnesota during 1960-1962. H. dictyoides has not been implicated as a pathogen of P. pratensis (it is pathogenic on Festuca spp.) and so studies on its physiology and pathogenicity seemed necessary. Such work usually requires a large quantity of spores but H. dictyoides sporulated sparingly on the acid potato - dextrose agar used for isolating it from the plant tissue. We decided to study methods for inducing abundant sporulation as preliminary work for …