Frank D. Kern

North American species of Peridermium on pine

Annotated index of the rusts of Colombia

Uredinales

Some new and interesting Porto Rican rusts

Japanese species of Gymnosporangium

Notes on some rust collections from Colorada, Wyoming and South Dakota

The uredial stage in Gymnosporangium

Phytophthora infestans on tomatoes

Chardoniella -- a new genus of the Uredinales

The microcyclic species of Puccinia on Solanum

The rust-flora of the Dominican Republic

The changing concepts of Gymnosporangium

Elateraecium, a new form genus of Uredinales

Nature and classification of plant rusts

Prediction of relationships among some parasitic fungi

The existence of Roestelia penicillata and its telial phase in North America

The morphology of the peridial cells in the Roesteliae

Joseph Charles Arthur [obituary]

Two new species of Uromyces on Carex

Conversations with European mycologists

Additional notes on the rusts of Pennsylvania

Notes on Gymnosporangium gracile Pat

Effective science teaching on the college and graduate level

The inside story of a scientific mission

New western species of gymnosporangium and roestelia

A further report on the Uredinales of Colombia

Additional species of Uredinales from Colombia

Heterothallism in the rusts

Fungi of Santo Domingo

Identity of a rust on Ephedra

The genus Puccinia in Pennsylvania

The importance of taxonomic studies of the fungi

The Pennsylvania Academy of Science-thirty years in retrospect

Observations of the dissemination of the barberry

Notes on some fungi from Colombia

Distribution of West Indian rusts

Changing concepts of Gymnosporangium

A list of fungi found on trees in Pennsylvania

Additions to the Uredinales of Venezuela

North American species of peridermium