Subtitle: Containing the British Phaenogamia, Filices, Equisetaceae, Lycopodiaceae, Selaginellaceae, Marsileaceae, and Characeae. Adapted for marking desiderata in exchanges of specimens; for an index catalogue to British herbaria; for indicating the species of local districts; and for a guide to collectors, by showing the comparative rarity or frequency of the several species. Interleaved and annotated for plants found in the district of the North London Natural History Society, verified by members of the Society

Subtitle: Containing the British Phaenogamia, Filices, Equisetaceae, Lycopodiaceae, Selaginellaceae, Marsileaceae, and Characeae. Adapted for marking desiderata in exchanges of specimens; for an index catalogue to British herbaria; for indicating the species of local districts; and for a guide to collectors, by showing the comparative rarity or frequency of the several species. Interleaved and annotated for Northamptonshire by Lawrence J. Tremayne

Subtitle: Containing the British Phaenogamia, Filices, Equisetaceae, Lycopodiaceae, Selaginellaceae, Marsileaceae, and Characeae. Adapted for marking desiderata in exchanges of specimens; for an index catalogue to British herbaria; for indicating the species of local districts; and for a guide to collectors, by showing the comparative rarity or frequency of the several species. Interleaved and with extensive annotations by C. P. Castell