4 ART. I.—B. HAYATA: 
recorded from that island. The references here made under each 
species are extremely limited, as there is no space for full ac- 
counts. Critical views regarding species already described by my- 
self or by others, are here given. In the present work, it is my 
desire to mention all the species recorded from Formosa, which 
have appeared in different publications, since the issue of the 
Enumeratio Plantarum Formosanarum and Flora Montana For- 
mos. So that, practically speaking, the present work is an 
exhaustive supplement bringing our former publications up to 
date. 
To mention the number of species of the flora* of the island, 
known to us up to the present time, there are, in the Enumeratio, 
1999 species belonging to 701 genera and 153 families. In my 
Flora Montana, 392 species are mentioned belonging to 266 
genera and 70 families; in the present work, I have mentioned 
735 species belonging to 843 genera and 109 families, thus 
adding to our present knowledge of Formosan flora, 567 species, 
72 genera and 2 families. Excluding all those species which 
appear for a second or third time, in the above three papers, 
the total number of the plants of the island is 2660 species 
belonging to 836 genera and 156 families. The following List 
shows genera added to those mentioned in our former publications. 
Most of them are new to the flora of the island. 
Isopyrum. Canarium. Prinsepia. 
Bra enia. Allophyllus. Callitriche. 
Uvaria. Pometia. Tashircea. 
Cochlearia. Albizaa. Bupleurum. 
Thespisia. Pirus. Pimpinella. 
Suriana. Cotoniaster. Phellopterus. 
* The term flora used in this work includes flowering plants, ferns and their «allies. 
