MATERIALS FOR A FLORA OF FORMOSA. 419 
herbaceo-membranacee ovate 20 cm. longe, 13 cm. late, remote 
bi-pinnate, sed sursum simpliciter pinnate, pinnis utraque 
latere 11 subrectis plus minus ascendento-recurvatis a rhachibus 
frondium angulo 60° divaricatis, petiolatis, (petiolis 4-1 em. 
longis); pinnis inferioribus rectis ascendentibus longissimis 
11 cm. longis a se 4 cm..remotis ovatis 4 cm. latis apice 
acuminatis (acuminibus linearibus  serratis) remote pinnatis, 
pinnulis inferioribus obtuse lanceolatis 2 cm. longis 1 cm. 
latis apice obtusis vel acutis basi cuneatis inferioribus a 
se 1 em. remotis margine dentato-lobatis, (lobis utraque latere 
4 elongato quadrangularibus apice  truncatis margine plus 
minus obscure aristato-serrulatis vel integris); rhaches frondium 
complanate supra et latere sulcate, subtus convex; rhaches 
pinnarum subalate ; venulis apice furcatis, ramulis prope marginem 
evanescentibus apice plus minus clavatis. Sori sub quoque lobo 
pinnularum prope costas generaliter J, vel ad lobos inferioribus 
2-3, ad ramulos superiores venularum furcatarum dorsales, (noyelli 
indusiis subhypogynis perfecte inclusi). Indusium unilateraliter 
apertiens, reniforme-cordatum ? mm. latum, 3 mm, longum. Indusium 
ante apertiens sacciforme, reniforme, depressum, supra minute et 
brevissime glanduloso-hirtellum (pilis glandulosis brevissimis 
clobulis capitatis), subtus nudum, sorum perfecte includens. 
Has. Nagotake, Liukiu, le 
on) 
g, S. Tanaka et Y. Tasutro, (No. 
ao, G. NAKAHARA. 
oO 
201); Haneshiyama, le 
Distrip.  J*ormosa. 
The indusium of the present fern is, when opened, reniformed 
or slightly cordate. It is attached at the end of the cordate 
notch, to the axis of the receptacle on a branch, of a veinlet. 
It reminds me of the sori of Dryopteris Maximouwiczti O. Ktze. The 
indusium is, before opening, like a cushion-formed sac which 
