334 88 



niinala vel ad apicem abrupte caudata, papyiacea, obscure viridi, ubique dense et 

 molliter pubescente, bipinnatifida. Rachi slraminea, complanata, superne late sul- 

 cata, dense pilosa. Pinnis alternis, basi dilalata sessilibus, linearibus, versus apicem 

 serratum breviter acuminatnm attenuatis, maximis 8 — 9 cm. longis, 12—14 mm. 

 laiis, costis siibtus prominulis convexis, superne complanatis, sulcatis; infimis abbre- 

 viatis, 3—4 cm. longis, fere oppositis, ad 4'/2 cm. remotis. Laciniis 25 — 30 jugis, 

 approximatis, falcatis, acutis, basi latioribus; lacinia basali anteriore dimidio majore. 

 Venis indivisis, 8 — 10 jugis, infimis plerumque conniventibus vel anastomosantibus 

 more subgen. Eunephrodii Syn. Fil., vel interdum liberis more subgen. Lcistreae Syn. 

 Fil., fere omnibus soriferis. Soris rubrescentibus supra medium venarum inseden- 

 tibus. Indusiis reniformibus, persistentibus, rubris, pilosis. 



The specimen was distributed "Ex Herbario CoUegii Columbiæ, a N. L. Britton 

 et H. H. Rusly distributæ' as Nepbrocliiim conterminiim Desv., a species with not 

 even the slightest alliance of course with our plant. It comes nearest to D. para- 

 sitica (L.), but it is much more hairy, much firmer in texture, has a much longer 

 stem, a different colour and the whole aspect of the plant does not resemble any 

 species of § Cyclosorus, known to me. The systematic position in the genus is 

 doubtful, as one can find in the same pinna both true Nephrodium and true Lastrea- 

 venation and transitions between the two kinds; still the first is the rule. 



