102 



FERNS : BRITISH AND FOREIGN. 



6. C. Phyllitidis, Presl. Polypodium Phyllitidis, Linn.; 



(PTum. Fil. t. 130). — Tropical America. 



7. C. nitidum, Presl. Polypodium nitidiim, Kaulf. Cam- 



py loneurum latum, Moore, Ind. Fil. p. 225. — 'Tropical 

 America. 



8. C. brevifoliiim, Link. Polypodium brevifolium, Link'; 



Melt. Fil. Hoii. Lips. — Tropical America. 



** Fronds pinnate. 



9. C. deeurrens, Presl. Polypodium deeurrens, Rudd. Fil. 



Bras. t. 33. Polypodium polyanthos, Sort. Brum, — 

 Brazil. 



28. DRYNARIA, Bory ; J. 8m. 



Rhizome short, thick, and fleshy. Fronds rigid ; the sterile 

 (when present) sessile, broad cordate, sinuose or laciniated ; the 

 fertile stipitate or sessile, pinnatifid or pinnate, rarely simple, 

 the segments articulated with the rachis ; when sessile, the base 

 is similar to the special sterile frond. Veins external, elevated, 



Genus 28. — PLrtion of mature frond, under side. No. 6. 



compound anastomosing, forming quadrate or hexagonal areo'es; 

 primary veins costasform or obsolete. Receptacles compitaL 

 Sori round, small, numerous, and irregular, or transversely or 

 obliquely serial, sometimes confluent, forming a linear sorns 

 between the costajform veins. 



