Natural history specimen data linked to collectors and determiners held within, "Revision of the fern family Marattiaceae in the Seychelles with two new species and a discussion of the African Ptisana
The General Collection of the Geneva Herbarium is estimated to contain 6.35 million specimens of plants (vascular plants, bryophytes and «algae»), fungi (Basidiomycetes, Ascomycetes, lichens), Oomycet
