The Farlow Herbarium houses nearly 1,400,000 specimens of lichenized and non-lichenized fungi, bryophytes, and algae. The collections are world-wide in scope; particular strengths are in bound, indexed exsiccatae, bryophytes and fungi from Asia, entomogenous fungi, Antarctic lichens, and special "authors" herbaria which contain many type specimens. The Herbarium also has an associated library, The Farlow Reference Library, including the Archives of the Farlow Herbarium of Cryptogamic Botany. Currently, the New England Botanical Club cryptogamic collection is also housed in the Farlow Herbarium.
The data shared with the speciesLink network refers to samples collected in Brazil.