206 POLYPODIACE^. 



pinnvla Hayata Mater. Fl. Formos. p. 431. DavalUa ChrJcei Hayata in 

 Tokyo Bot. Mag. XXIII. p. 27 (non Baker). 



Hae. Mt. Aiisan ; epiphyta ad tiamcos ChamcBcyjMns et Taitvamae, 

 leg. S. Sasaki, Mai., 1913. 



Stipites 14 cm. longi glabri sti-amineo-rubescentes basi plus minus pur- 

 purasc«ntes subteretes (supra) profunde 1-sulcati sursima 2-3-sulcati glabri 

 Laud squamati basi parce squamati, squamis elongato-triangularibus tenuibus 

 leviter rubescentibus margine erosis apice obtusis. Frondes triangulares 

 19 cm. longsB basi 20 cm. latse, piunis uti-oque latere 15, infimis 3-pin- 

 natis 10 cm. longis, inferioribus bi-pinnatis G-7-S cm. longis a se 3-4 cm. 

 remotis, superioribus brevioribus simpliciter pinnatis 3-4 cm. longis a se 1- 

 2 cm. remotis, sm-sum minoribus 3 mm.-l cm. longis a se 3 mm. remotis ; 

 pinnis infimis sessiUbus lanceolato-ovatis 10 cm. longis 4J cm. latis, latere 

 inferiore latiore 2i cm. lato ; pinnulis I. infimis brevioribus, ( inferioribus 

 longioribus sessilibus angustato-quadrang^laribus a se 1-2 cm. remotis pinnatis); 

 pinnulis II. ovatis inferioribus 6 mm. longis obtusis angustatis remote pro- 

 fundeque xainnatifidis, segraentis angustissimis remotis cocblearibus bicomutis 

 cnm cornibus 1-3 mm. longis 1-J mm. latis basi stipitatis, (comibus exteriori- 

 bus longioribus interioribus brevioribus), sinibus inter comua rotundatis; rliaches 

 frondium supra leviter tenuissime bisulcatas subtus conves;Te utrinque glabrse; 

 rhaches pinnanun subcomplanatse supra plus minus sulcatse subalatse ; paginse 

 membranacese utraque glabrse. Sori ad sinus fm'Cfe venularara vel interdimi 

 ad angulos venulanim flexanim ad centnun segmentorum pinnulamm 11. siti 

 solitarii. Indusium semiglobosura j mm. latum i mm. longum basi leviter 

 cordatum vel tiimcatum. 



In addition to the original description, I may mention the following 

 charactere which are most important, so far as the modern pteridology is 

 coucemed. The rhizomes are creeping like that of DavaUia and Hnrnata, 

 but the stipes are never inserted by articulatiou on the rhizomes. Tlie fronds 

 have scales which are veiy like stipules in floweriug i^Iauts, on the point of 

 ramificatiou of pinnre, pinnules and segments, as is the case with Acrophoms. 



The habit of this feru is extremely Hke that of Davallia. It is impossible 

 to sepai-ate this species from that geuus but for tlie difierence of fructification 



I 



