48. POLYPODIUM, EUPOLYPODIUM. 323 



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

 terminal on the principal veins. Hk. Sp. 4. p. 174. Grammitis, Hk. & Gr. 

 t. 62. 



Hab. Guiana and the Amazon valley. 



*** Fronds pinnatifid. Sp. 115-131. 

 f Lobes not reaching more than halfway down to the rachis. Sp. 115-118. 



115. P. barbatulum, Baker ; st. tufted, slender, - in. 1., clothed with soft 

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



to a depth of ^ line ; texture subcoriaceous ; both sides more or less densely 

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

 P. ciliatum, Bojer, Hort. Maur. p. 416. (non Willd.}. 



Hab. Bourbon. 



116. P. andinum, Hk. ; fr. tufted, subsessile, 4-6 in. 1., - 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. Hk. Sp. 4. p. 179. 2nd Cent. t. 6. 



Hab. Andes of Ecuador and Peru. May possibly be P. crispatum, L. (Pluui. t. 



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

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

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

 middle ; texture coriaceous ; both 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. Hk. 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. L, 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. comptonisefolium, Desv. 

 Hk. Sp. 4. p. 192. P. scolopendrioides, Hk. $ Gr. p. 42. 



Hab. West Indies to Peru. The Linnaean name was founded on a forked form 

 figured by Plumier. 



**** i es rea ching nearly down to the main rachis. Sp. 119-131. 



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

 slender, naked ; fr. 3-6 in. L, 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. Sp. 4. p. 174. Xiphopteris, Kaulf. Hk. Gard. F. t. 44. 



Hab. West Indies and Mexico to Brazil, Peru, and Juan Fernandez ; Sandwich Isles, 

 Madagascar, Mauritius, Guinea Coast. X. extensa, Fde, is a narrow elongated form ; 

 X. Jamesoni, Hk. 2nd Cent. t. 14, a form with a distinct uncut upper part, the lower 

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

 after the pinnae fall ; Grammitis myosuroides, Schk. (P. setosum, Mett. Hk. Sp. 4. p. 175), 

 is apparently a form of this pinnatifid throughout ; and P. ? binerve, Hk. Sp. 4. t. 273. B. 

 one of the curious abnormal conditions of Acrostichum sorbifol' 



