TAB. XLIX. 
Polypodium (Pheoopteris) decursivo-pinnatum, 
Van Hall. 
Candice subrepente stipitibusque semipedalibus stramineis 
squamis subulatis ciliatis ferrugineis paleaceis, frondibus 
villosnlis pedalibus et ultra lanceolatis tenui-acuminatis 
inferne augustatis pinnatis apice pinnatifidis, pinnis hori- 
zontaliter patentibus oblongo-lanceolatis pinnatifidis, in- 
fimis brevibus liberis, reliquis lobo intermedio semicirculari 
coadunatis, venis pinnatis apice clavatis supra medium so- 
riferis, soris perpaucis solitariis parvis pilis fasciculatis cap- 
sulis duplo longioribus (vix basi in membranam seu involu- 
crum unitis) intermixes, rachibus stramineis nitidis patenti- 
ferrugineo-villosis. 
Polypodium decursivo-pinnatum, “ Van Hall in N. Verhandl. 
t. 1. Klass. v. d. Neederl. Instil, t. 5.” 
Pbegopteris decursivo-pinnata, Fee gen. p. 242. t. 20. A. 1. 
(fragments only.) 
Aspidium decursivo-pinnatum, Kze. Bot. Zeit. 6. 555. Metten. 
Aspid. p. 75. 
Lastrea decurrens, J. Sm. Bot. Mag. v. 72. Comp. p. 33. 
Hab. Japan, Goring ; Port Cbusan, Korea, Wilford, n. 920. 
A very elegant and very distinct species allied to the Euro- 
pean Polypodium Phegopteris, Linn, and to the Pol. hexagonop- 
terum , Sw. but very different in form and in the presence 
of the copious, spreading, ferrugineous, subulate scales which 
clothe the stipites and rachis. Kunze and others consider 
that the hairs of the sori arise from an almost obsolete invo- 
lucre, and hence they refer the plant to Aspidiacece. 
Tab. XLIX. Fertile plaDt ; not. size. Fig. 1. Portion of a 
fertile pinna, f. 2. Sorus. f. 3. Scale from the base of the 
stipes : magnified. 
Cbnt. 2. t. 49. 
