24 books • 1 series
The Ferns (Filicales) Treated Comparatively with a View to Their Natural Classification, Vol. 3
The Ferns (Filicales): Volume 1, Analytical Examination of the Criteria of Comparison (Cambridge Library Collection - Botany and Horticulture)
The Ferns (Filicales): Volume 3, The Leptosporangiate Ferns (Cambridge Library Collection - Botany and Horticulture)
The Ferns (Filicales): Volume 2, The Eusporangiatae and Other Relatively Primitive Ferns (Cambridge Library Collection - Botany and Horticulture)