110 THE BOTANICAL MAGAZINE. [Vol. xxvi. No. 304. 



Peranema formosana Hayata, sp. nov, Rhizoma ascendens, 

 breve, oblongum, 20cm. longum, 1cm. latum, cum reliquis stipi- 

 tum dense obtectum, radices fibrillosas numerosas nigricantes 

 emittens, reliquis stipitum cylindrico-complanatis ascendento- 

 adnatis, basi lV2cm. latis, cicatricibus squamarum horizontaliter 

 recurvis notatis ; rhizoma apice dense squamatum, (squamis 

 linearibus vel ovatis, acuminatis 2^/2 cm. longis). Stipites ad 

 apicem rhizomatum 5-7-coespitosi, a basi usque ad racliin 

 dense vel sparse squamati, 120 cm. longi, basi 7 mm. in diame- 

 tro, suberecti, basi stramineo-nigricantes, superiore stramineo- 

 flavi, supra profunde 3-sulcati, dense vel sparse squamati, squa- 

 mis in magnitudine variabilibus, lanceolatis, semper acuminatis, 

 stramineis. Frondes late rhomboideo-triangulares, 90—95 cm. 

 longge 80cm. latge, apice acut^e, tripinnatee; pinnae infimas 55cm. 

 longse, elongato-lineari-triangulares, basi 20 cm. lata apice 

 acuminatfe a se 15 cm. remotae, breve stipitatce, stipitibus 2cm. 

 longis, rhachibns squamatis ; pinnulge I infima brevissime stipi- 

 tat£e, a se 5cm. remotae (stipitibus 4mm. longis), lineari-triangu- 

 lares, acuminatcc, circ. 10cm. longse, basi 2i/2cm. latae; plnnuljE 

 II infimje sessiles, oblongo-quadrangulata, basi late acutee, apice 

 truncato-obtusge, 13 mm. longse, 6 mm. lata?, a se 7 mm. remotae, 

 utroque latere 5-6-dentata2 vel lobatae, (dentibus truncatis vel 

 acutis), apice obscure denticulatce, utraque pagine sparse hirsutje, 

 infra \enulis distinctis. Sori sub dentibus singulis vel lobis 1, 

 globosi, 1mm. in diametro vel majores, longe stipitati, stipitibus 

 1^^ mm. longis. Indusia inferiora, supra minute glanduloso- 

 hirtella, pilis globuliferis. 



Hab. Arisan. leg. B. Hayata et S. Sasaki, Jan. 1912. 



Here is another form which is much smaller than the one 

 just described. It has thinner texture, more divaricate pinnae. 

 The stipes 20cm. long, fronds elongato-triangular, ^Ocm. 30cm. 

 broad. It may prove a variety of the species just mentioned, 

 when its habit is fully known. 



Another fern which I am going to describe was also first 

 collected by myself in the same mountains. It is a new species 



