48. POLYPODIUM, CAMPYLONEURON. 349 



very gradually ; the edge entire or slightly sinuated ; texture rigid, very 

 coriaceous ; both sides naked, often with cretaceous dots above ; main veins 

 straight, very prominent, distinct to the edge ; areolce in rows of 6-12 between 

 the midrib and edge, with usually 2 sori in each. Hk. Sp. 5. p. 38. 



Hab. Florida to S. Brazil, common. O. latum, Moore, is a large broad-leaved variety 

 with often 3 sori in the areolse. P. nitidijsimum, Mett., in the specimens we have 

 seen has a very glossy frond, st. 5-6 in. L, and lanceolate-acuminate scales. 



1,A, ) ft Fronds pinnate. Sp. 274-5. 



274. P. (Camp.) decurrens, Raddi ; rhizome wiry, rather slender, the scales 

 deciduous ; st. 6-12 in. 1., firm, naked ; fr. usually with several erecto-patent 

 pinnae on each side, which are 8-12 in. 1., 1^-2 in. br,, the point acuminate, the 

 base narrowed, the edge nearly entire ; texture subcoriaceous ; colour dark- 

 green ; both sides glossy ; areolce about 6 between the midrib and edge, with 2-3 

 sori in each. Hk. Sp. 5. p. 42. 



Hab. Brazil and Peru. 



275. P. (Camp.) Fendleri, Eaton ; rhizome stout, densely clothed with large 

 lanceolate greyish-brown scales; st. l|-2 ft. 1., strong, naked, glossy ; fr. with 

 several erecto-patent pinnce on each side, which are 12-18 in. 1., 2-4 in. br., the 

 point cuspidate, the base narrowed, the edge entire ; texture coriaceous ; colour 

 pale-green ; both sides glossy ; veins raised, very distinct ; the areolce in rows of 

 8-12 between midrib and edge, with 3-4 sori in each. C. magnificum, Moore. 



Hab. Venezuela, Fendler, 231, 410. New Granada, Lindig, 307, Triana. 



y^/1 i- ** Under surface matted with woolly or cottony tomentum. Niphobolus, Auct. 

 TAB. 48. fig. k. 1. Sp. 276-296. 



A A I t Tomentum thin, adpressed. Sp. 276-284. 



276. P. (Niph.) confluens, R. Br. ; rhizome filiform, wide-creeping, clothed 

 with squarrose fibrillose ferruginous scales ; st. - in. 1. ; fr. dimorphous, the 

 sterile ones orbicular or oblong, the fertile ones longer and narrower, about 

 1 in. L, J in. br., the edge quite entire ; texture coriaceous ; upper surface naked, 

 lower with dense glossy subferruginous tomentum ; veins quite hidden ; sori im- 

 mersed but prominent, sometimes covering the whole surface. Hk. Sp. 5. p. 46. 



Hab. Temperate E. Australia. According to Prentice, this, not the next, is P. ru- 

 pcstre, 11. Br. 



277. P. (Niph.) serpens, Forst. (non Sw.) ; rhizome wide-creeping, firm, 

 clothed with linear-acuminate ferruginous scales ; st. |-3 in. 1., firm, erect ; fr. 

 dimorphous, the barren ones round or elliptical, the fertile ones longer and 

 narrower, 4-6 in 1., |-f in. br. ; texture coriaceous ; upper surface scattered, 

 lower densely coated with close whitish or subferruginous tomentum; veins 

 quite hidden ; sori large, prominent, scattered, ultimately covering the whole 

 of the upper part of the frond. P. rupestre, R. Br. Hk. Sp. 5. p. 46 (in part}. 

 Hk. Gr. t. 44. 93. 



Hab. Australia and New Zealand, eastward to the Society Islands. Differs from 

 P. ylalrum, Mett., by its broader barren fronds and copious irregularly scattered sori. 

 The Tahiti plant is P. tricholepis, Mett. 



j 278. P. (Niph.) adnascens, Sw. ; rhizome firm, but slender, the scales linear, 

 deciduous ; st. -1 in. L, firm, erect ; fr. dimorphous, the barren ones elliptical 

 or spathulate, blunt, the fertile ones longer and narrower, 6-12 in. L, 4 in. br. ; 

 texture coriaceous ; upper surface naked, lower thinly coated with" whitish 

 tomentum in the barren but more densely in the fertile part beneath ; veins 

 hidden ; sori small, bright-coloured, immersed, occupying the whole of the 



