American fern journal - American Fern Society. (American Fern Society, 2006)

American fern journal - American Fern Society. (American Fern Society, 2014)

American fern journal - American Fern Society. (American Fern Society, 2014)

Bartonia;proceedings of the Philadelphia botanical club ... - Philadelphia Botanical Club. (Philadelphia Botanical Club, Academy of Natural Sciences, 2011)

Bartonia;proceedings of the Philadelphia botanical club ... - Philadelphia Botanical Club. (Philadelphia Botanical Club, Academy of Natural Sciences, 2011)

Blue jay - Saskatchewan Natural History Society. (Saskatchewan Natural History Society, 2012)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2006)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2006)

Hardy Fern Foundation quarterly - Hardy Fern Foundation. (The Hardy Fern Foundation, 2017)

Long Island Botanical Society newsletter - Long Island Botanical Society. (Long Island Botanical Society, 2023)

Maryland naturalist - Natural History Society of Maryland (The Society, 2007)

Sempervirens : the quarterly of the Virginia Native Plant Society - Virginia Native Plant Society. (The Society, 2018)

Smithsonian contributions to botany - Smithsonian Institution (Smithsonian Institution Press, 2021)