48. POLYPODIUM, §§§§§ EUPOLYPODIUM. 323 



entire or subsinuated ; texture subcoriaceous ; sori oblong, distant, oblique, 

 terminal on the principal veins.— //*. »S^. 4. p. 174. Grammitis, Hh. <& Qr. 

 t.62. 



Hab. Guiana and the Amazon valley. 



•»** Fronds pinnaiifld. Sp. 116-131. 



t Lobes not reaching more than halfway dovim to the radiis. Sp. 115-118. 



115. P. harbatulum. Baker; sJ. tufted, ^ slender, \-\ in. I., clothed with soft 

 brown spreading hairs ; fr. \-\\ in. 1., \ in. br., the edge entire or broadly lobed 

 to a depth of \ line ; texture subcoriaceous ; hath sides more or less densely 

 clothed with long soft hairs ; veins pinnate in the lobes ; sori medial, uniserial. — 

 P. ciliatum, Bojer, Hort. Maw. p. 416.^ {non Willd.). 



Hab. Bourbon. . 



116. P. andinum, Hk. ; fr. tufted, subsessile, 4-6 in. 1., J-f in. br., regularly 

 bluntly lobed about a quarter or third of the way down, the point acute or 

 bluntish, the lower part narrowed very gradually ; texture subcoriaceous ; both 

 sides thinly clothed with soft spreading hairs ; veins once forked ; sori large, 

 round, one to each lobe. — Hi;. Sp. i. p. 179- 2nd Cent. t. 6. 



Hab. Andes of Ecuador and Peru. — May possibly be P. crispaivm, L. (Plum. t. 

 102. B.). 



117. P. trichosorum, Hk. ; rhizome creeping ; St. 1-2 in. 1., slender, densely 

 clothed with soft spreading hairs ; fr. 3-4 in. 1., \-^ in. br., the point bluntish, 

 Ae edge crenato-sinuate to a depth of 1 lin., the lower part narrowed from the 

 middle ; texture coriaceous ; hotk sides, and especially the edge, clothed with 

 hairs, like those of the stem ; veins in pinnated groups ; sori in 2-3 rows on 

 each side.— fi^i. Sp. 4. p. 178. 2nd Cent. t. 12. 



Hab. Andes of Quito, Jameson, 349. 



118. P. trifurcatum, L. ; rhizome stout, creeping, densely clothed with linear 

 scales ; st. close, 3-5 in. 1., more or less villose, often bent ; fr. 6-9 in. 1., 1 in. or 

 more br., with broad blunt entire lobes reaching from a third to halfway down ; 

 texture coriaceous ; both sides nearly naked ; veins in copiously pinnated groups, 

 with the lower veinlets forked, sometimes anastomosing ; sori copious, prin- 

 cipally in two rows in each lobe, immersed. — P. comptoniaefolium, I)esv. 

 Hi. Sp. i.p. 194. P. scolopendrioides, Hk. 8f Gr. p. 42. 



Hab. West Indies to Peru. — ^The Linnsean name was founded on a forked form 

 figured by Plumier. 



**** Lobes reaching nearly down to the main rachis. Sp. 119-131. 



119. P. serrulatum, Mett. ; rhisome wide-creeping, fibrillose ; st. tufted, short, 

 slender, liaked ; fr. 3-0 in. 1., 2-3 lin. br., the upper part, sometimes the whole, 

 subentire, but more usually pectinato-pinnatifid, with rigid erecto-patent lobes ; 

 rachis subrigid, flexuose ; texture coriaceous ; both sides nearly naked ; sori 

 oblong, confluent. — Hk. 8p. 4. p. 174.. Xiphopteris, Kaulf. Hk. Grard. F. t. 44. 



Hab. V-TlvA Indies and Mexico to Brazil, Peru, -and Juan Fernandez ; Sandwich Isles, 

 Madagascar, Mauritius, Guinea Coast. — X. externa, F^e, is a narrow elongated form ; 

 X. Jamesoni, Hk. 2nd Cent. t. ] 4, a form with a distinct uncut upper part, the lower 

 two-thirds peetinato-pinnate, and the texture so rigid that the threadlike midrib remains 

 after the pinnse faU ; Grammitis myoswoides, Sohk. (P. setomm, Mett. Hk. Sp. 4. p. 175), 

 is apparently a form of this pinnatifid throughout ; and P. ? binerve, Hk. Sp. i. t. 273. B. 

 one of the curious abnormal conditions of Acroatichvm soriifolium. 



