TAB..COXVL 
J POLYPODIUM RIGESCENS. 
FILICES.—GrnATE. Br. Porvropiaczz. Kaulf. FriricEs verw. Willd., Spreng. 
Grzw. CHag. POLYPODIUM, Swartz. Sori subrotundi (seriati, sparsi vel conferti). Znvo- 
lucrum nullum. Br. 
PorvPoprUM rigescens; frondibus linearibus pinnatifidis stipitatis glabris, laciniis oblongis obtusis 
integerrimis coriaceis, soris solitariis pilosis demum confluentibus. JZild. 
Polypodium rigescens. Bory. JZilld. Sp. ET. v. 5. p». 183. 
Has. In arboribus montium insule Borboniz. Dory. 
Caudex ut videtur brevis, repens, radiculosus, squamosus; squamis paleaceis, atro-fuscis. 
Stipites vix bipollicares, erecti, semiteretes, glabri, basin versus paleaceo-squamosi. 
Frondes digitales et ultra, erectee, rigide, lineares, profunde pinnatifidee, Lacinie horizontales, alternze, ovato- 
oblonga, obtuse, coriaces, integerrimse, glabrse, fructiferee, subtus parce pilose, siccitate marginibus 
revolutis.  achis glabra, dorso sulcata, facie inferiore prominente atro-fusca. | 
Sori subrotundi, approximati, intra marginem et costam siti, demum confluentes, pilis immixti. 
Capsule globosse, annulo lato fere completo cinctee, brevi-stipitatee. 
Semina angulato-globosa, pallide cinereo-viridescentia. 
Fig. 1. Lacinia frondis fructifera a dorso visa. f. 92. Pili ex eadem lacinia. f. 3. Capsule. f. 4. Semina:— 
man. auct. 
Polyjpodium rigescens appears to be known only by the description of Willdenow in the Species 
Plantarum. We are indebted to M. Desvaux for an authentic specimen, which we have here 
figured and described. 
