Frank D. Kern

A biologic and taxonomic study of the genus Gymnosporangium ...

North American species of peridermium

Identity of a rust on Ephedra

Additional notes on the rusts of Pennsylvania

Joseph Charles Arthur [obituary]

Conversations with European mycologists

Heterothallism in the rusts

The microcyclic species of Puccinia on Solanum

Chardoniella -- a new genus of the Uredinales

The morphology of the peridial cells in the Roesteliae

Changing concepts of Gymnosporangium

Two new species of Uromyces on Carex

Additions to the Uredinales of Venezuela

Some new and interesting Porto Rican rusts

A list of fungi found on trees in Pennsylvania

Fungi of Santo Domingo

Distribution of West Indian rusts

New western species of gymnosporangium and roestelia

Uredinales

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

The Pennsylvania Academy of Science-thirty years in retrospect

The uredial stage in Gymnosporangium

Additional species of Uredinales from Colombia

A further report on the Uredinales of Colombia

Observations of the dissemination of the barberry

Phytophthora infestans on tomatoes

Prediction of relationships among some parasitic fungi

Notes on some fungi from Colombia