TAB. XLIX. 



POLTPODIUM (PHEGOPTERIS) DECURSIVO-PINNATTTM, 

 Van Hall. 



Caudice subrepente stipitibusque semipedalibus stramineis 

 squamis subulatis ciliatis ferrugineis paleaceis, frondibus 

 villosulis 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- 

 sulisduplo longioribus (vix basi in membranam seu involu- 

 crum unitis) intermixtis, racbibus stramineis nitidis patenti- 

 ferrugineo-villosis. 



Polypodium decursivo-pinnatum, " Van Hall in N. Verhandl. 

 t. 1. Klass. v. d. Neederl. Instit. t. 5." 



Phegopteris decursivo-pinnata, Fee gen. p. 242. t. 20. A. 1. 

 (fragments only.) 



Aspidium decursivo-pinnatum, Kze. Bot. Zeit. 6. 555. Metten. 

 Aspid. p. 15. 



Lastrea decurrens, J. Sm. Bot. Mag. v. 72. Comp. p. 33. 

 Hab. Japan, Goring ; Port Chusan, Korea, Wilford, n. 920. 



A very elegant and very distinct species allied to tbe Euro- 

 pean Polypodium Phegopteris, Linn, and to the Pol. Jiexagonop- 

 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 plant ; nat. size. Fig. 1. Portion of a 

 fertile pinna. /. 2. Sorus. /. 3. Scale from the base of the 

 stipes : magnified. 



Csvi. 2. I. 19. 



