MATERIALS FOR A FLORA OF FORMOSA. 451 
dimorphisme, vu que les frondes fertiles ont des segments bien 
plus courts et plus obtus que les steriles. J’ai une plante 
identique du continent voisin: Sud de la Chine, c. O. Warsure.”’ 
So far as I can judge from the note given above, Polystichum 
dimorphophyllum Hayara mentioned in the present work p. 428, 
is not to be referable to Curist’s variety, for the former has entire- 
ly dimorphic fronds while the latter looks like a mere form of P. 
(Aspidium) aristatum which sometimes shows the slightest tendency 
towards dimorphism. In this, Mr. 8. Kopama concurs. So far as 
I am aware, the description of Curist’s variety has never been 
published. 
Athyrium tozanense Hayara=Aspleniwm tozanense Hayata Ma- 
terials for a Flora of Formosa p. 440. After finishing this 
manuscript, I have, by the suggestion of Mr. T. Nakai, once more 
examined the sori of the fern, and have found that there are 
some indusia which are reflexed backwards at the apex, or on the 
middle. It should, therefore, be properly referred to Athyrium. 
Dryopteris quadripinnata Hayara=WMicrolepia quadripinnata 
Hayata Materials for a Flora of Formosa, p. 434. As is suggested 
by Mr. T. Nakar, the indusia of the fern are cordate, affixed to 
the receptacles and quite free on the margin. It should, therefore, 
be properly transferred to Dryopteris from Microlepia to which it 
was erroneously referred. 
