48. POLYPODIUM, EUPOLYPODITJM. 337 



Hab. Mexico, Guatemala, and Cuba. The Mexican P. biserratum, M. & G., is pro- 

 bably the same, but in our specimens from Mettenius the fronds are much more elongated, 

 and the pinnae more numerous, and sori more distant. 



204. P. sororium, H. B. K. ; rhizome stout, wide-creeping, densely clothed with 

 small pale-brown scales ; st. 6-12 in. L, firm, erect, naked ; fr. 1-2 ft. L, 6-9 in. 

 br. ; lower pinnos the largest, sessile, 4-6 in. L, -f in. br., the apex acuminate, 

 the edge entire or obscurely undulated ; texture papyraceo-herbaceous ; rachis 

 and both sides naked ; veins fine, very distinct, pinnated ; sori in distinct rows 

 nearer the midrib than the edge. Hk. Sp. 4. p. 219. 



Hab. Cuba and Mexico southward to Peru. According to Mettenius, GoniopMebium 

 elatum, Fe"e, is a form of this with the veins sometimes united. 



205. P.fraterntim, C. & S. ; rhizome wide-creeping, the scales ovate-acuminate, 

 bright ferruginous ; st. 4-8 in. 1., firm, erect, naked ; fr. 12-18 in. L, 6-9 in. br., 

 lower pinnos 1 in. apart, 4-5 in. 1., narrowed at both ends, the edge obscurely 

 crenated ; texture subcoriaceous ; both sides naked ; veins close, pinnate ; sori 

 medial, uniserial, slightly immersed. Mett. Pol. p. 63. P. Henchmanni, 

 J. Sm. 



Hab. Mexico. Mettenius describes a closely allied P. harpophyllum, Zenk., from the 

 Neilgherries, with which we are not acquainted. Goniophl. revertens, Fe"e, appears to be 

 a form with the groups of veins sometimes joined. 



206. P. legionarium, Baker ; st. 6 in. or more 1., firm, erect, glossy, naked ; 

 fr. ] Jj-2 ft. 1., 1 ft. or more br. ; lower pinnos the largest, sessile, 6-8 in. L, -f in. 

 br., broadly crenate, the base rounded ; texture herbaceous ; both sides finely 

 villose ; veinlets in pinnated groups of 2-3 on a side ; sori large, in long distinct 



-rows nearer the midrib than the edge. P. macrodon, Hk. Sp. 4. p. 218. (non 

 Reinw.). 



Hab. Guatemala, Salvin. 



207. P. tenellum, Forst. ; rhizome wide-climbing, woody, scaly when young ; 

 st. 2-3 in. 1., firm, nearly naked, jointed near the base ; fr. pendent, 1-2 ft. or 

 more 1., 2-4 in. br. ; pinnae 2-3 in. 1., | in. br., -narrowed to both ends, entire or 

 obscurely crenated ; texture papyraceo-herbaceous ; rachis and both sides naked ; 

 veins 2-3 forked ; sori in rows near the .edge. Hk. Sp. 4. p. 217. Arthropteris, 

 J. Sm. 



Hab. Australia, New Zealand, and New Caledonia A very distinct species. 

 A A ***** F ron ds lipinnatifid or Upinnate. Sp. 208-219. 



208. P. hymenophi/lloides, Kaulf. ; rhizome fibrous, very slender ; st. 1 ?d. or 

 less L, densely tufted, very slender ; fr. 2-4 in. L, - in. br. ; pinnae close, 

 usually dimidiate, cut down to a broadly-winged rachis into a few small oblong 

 lobes ; texture pellucido-herbaceous ; rachis and both sides finely glandular ; 

 veinlets 1 to each lobe ; sori terminal. Hk. Sp. 4. p. 228. Adenophorus, Hk. Sf 

 Gr. Ic. t. 176. 



Hab. Sandwich Isles. A very distinct species, resembling a Hymenophyllum in habit 

 and textura. 



209. P. fallax, Schlecht ; rhizome slender, wide-creeping, much-branched, 

 clothed with fine brown tomentum ; st. distant, slender, -1 in. L, nearly naked ; 

 fr. l-l in. 1., in. br., with a few distinct pinnos on each side, the lowest the 

 largest and deeply pinnatifid with linear lobes ; texture coriaceous ; under surface 

 with minute scattered scales ; sori large, prominent, often 1 only to a pinna. 

 Hk. Sp. 4. p. 215. 



Hab. Mexico. Fronds often more than an inch apart on a long thread-like rhizome. 

 2 u 



