420 ART, 1.—B. HAYATA: 
completely includes a sorus in itself. It is densely covered with 
very short glandulous hairs on the upper side of the outer surface, 
but it is quite hairless on the lower side of the same surface. It 
is quite hairless inside. It should be referred to a_ special 
section together with Dryopleris Maximowiceti which has a very 
peculiar sorus different from that of other species of the genus. 
My thanks are due to Mr. 8. Kopama who has kindly examined 
the plant at my request. 
Dryopteris rufinervis Hayara sp. nov. Stipites? Frondes ovato- 
lanceolata ut videntur verisimiliter ultra 150 cm. long 80 em. late 
bipinnatee, (sed pinnis infimis cum una pinnula pinnata); pinnis in- 
ferioribus lanceolatis in ambitu, subsessilibus, 45 em. longis, 23 em. 
latis a basi 18 em. latis, apice acuminatis, utraque latere pinnulis 15- 
16, a se 3-4 cm. remotis, pinnulis mediocribus angustato-lanceolatis 
12 em. longis 3 em. latis apice cuspidato-acuminatis, (cuspidibus 
linearibus), basi cire. equilatis pinnatifidis (lobis elliptico-angustatis 
a medio usque ad basin equilongis 1 cm. longis 7 mm. latis ascen- 
dento-patentibus apice obtusis basi eaquilatis, margine crenato 
serratis, serris obtusis, sinibus inter tobos angustis obtusis 2 mm. 
latis apice a rhachibus 3 mm. remotis) ; partibus apicalium pinnu- 
larum et pimnarum margine lobulatis, sursum serratis; pinnis 
infimis oblique triangularibus in ambitu 45 em. longis 30 cm. latis 
basi latere superiore 10 cm. latis, latere inferiore 25 cm. latis, 
pinnulis latere superiore 15-17, latere inferiore paucioribus. 13-15, 
pinnulis infimis (latere superiore) a rhachibus frondium 3 cm. remotis, 
iis mediocribus conformibus equilongis ; pinnulis (latere inferiore) 
iis latere superiore generaliter longioribus, ias in longitudine 
24-plo equantibus, presertim pinnulo infimo longissimo a rhachi- 
bus frondium 8 em. remoto 25 em. longo 12 em. lato pinnato, pinnulis 
