Appendix A. cxvii 
is added to its known range of distribution (I believe that Australia 
is the only large area in which it has not been found). As 
showing the advances made in the study of Filices as understood 
at the date of the publication of ‘ The British Ferns/ it may be 
stated that in my latest work on this subject (‘ The Student’s Flora 
of the British Islands/ 1884), the Filices of that work are grouped 
under four natural Orders: — (1) Filices , seventeen genera and 
thirty-eight species ; (2) Lycopodiaceae , one genus and five species ; 
(3) Selaginellaceae , two genera and three species ; (4) Marsileaceae, 
one genus and species. In all twenty-one genera and forty-seven 
species. In the eighth edition (1890) of the ‘London Catalogue 
of British Plants ’ fifty-nine are given. 
1862. Garden Ferns, or coloured figures and descriptions, with 
the needful analyses of the fructification and venation, of a selection 
of Exotic Ferns adapted for cultivation in the Garden, Hothouse, 
and Conservatory, by W. J. Hooker. The drawings by Walter 
Fitch, F.L.S. One vol., royal 8vo, with sixty-four plates (1862). 
As in the case of the ‘ Filices Exoticae/ the plants figured in this 
work, the last completed by the Author, then in his seventy- 
seventh year, were for the most part cultivated in the Royal 
Gardens, Kew. It includes as Ferns a Marsilea and Helmintho- 
stachys ; eight of the plates are devoted to Trichomanes, one, 
T. pinnatum , Hedw'., with seventeen synonyms, and another, 
T. javanicum , with eighteen. 
1863. Letter from Sir W. J. H. to the Secretary of State 
for the Colonies on the publication of Colonial Floras. 
See p. Ixxxii. 
1865. Synopsis Filicum, or a Synopsis of all known Ferns, 
including the Osmundaceae , Schizaeaceae , Maraltiaceae , and Ophio- 
glossaceae (chiefly derived from the Kew Herbarium). Accom- 
panied by figures representing the essential characters of each 
genus, by the late Sir W. J. H., Director of the Royal Gardens, 
Kew, and John Gilbert Baker, F.L.S., Assistant- Curator of the 
Kew Herbarium. One vol., 8vo, with nine coloured plates 
containing analyses of seventy-five genera (1868). Upon this 
posthumous work my father was engaged up to a few days before 
his decease, and forty-eight pages of it in print were left on his desk, 
together with the Preface and much matter in manuscript. After 
