William C. Darrah

1909 – 1989

• A new fossil Gleicheniaceous fern from Illinois
• A remarkable fossil Selaginella with preserved female gametophytes
• Leo Lesquereux
• Notes on Lepidodenropsis
• Paleozoic lepidodendroid embryos
• Permian elements in the fossil flora of the Appalachian province
• Pithole, the vanished city
• Recent paleobotanic investigations near Pittsburgh, Pennsylvania
• The status of Paleozoic pteridosperms