Porcupines and Ferns

Abstract

Early in August, 1940, while at our summer home in the Catskills, I received a letter from a friend, asking me to collect some ferns she listed-Aspleniutm Rutamuraria, Onoclea Struthiopteris, Cryptogramma Stelleri, Polystichum Braunii, Cystopteris bulbifera, Woodsia glabella, and Lygodium palmatum, also Dryopteris fragrans -adding that the last had the fragrance of violets, but there was no use searching, as it grows only on the most inaccessible cliffs and was not known so far south. At