Sharpe, Joanne M. (2024) Observstions of leaves of two fern species (Dryopteris intermedia, Dryopteris marginalis) at the Holt Research Forest, Arrowsic ME from 2020 through 2024.
Available online at: https://www.uvm.edu/femc/data/archive/project/hrfferns/dataset/fern-
observations