48. POLYPODIUM, §§§§§ EUrOLYPODIUM, 323 



entire or suLsimiated ; texture subcoriaceous ; sor-i oblong, distant, oblique, 

 tfiniinal on the principal veins. — Hk. Sp. 4. p. 174. Grainmitis, Ilh. & Gr. 

 t. G2. 



Hab. Guiana and the Amazon valley. 



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



t Lohcs not reaching more than halj'wai/ down to the rachis. Sp. 115-118. 



115. P. harhatidum. Baker; s^ tufted, slender, ^-\ in. 1., clothed with soft 

 brown spreading hairs ; fr. \-\\ 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. j).4:\i), (non Willd.). 



Hab. Bourbon. 



IIG. P. andinum, Hk. ; fr. tufted, subsessile, 4-6 in. 1., j-§ in. br., regularly 

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

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

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

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



Hab. Andes of Ecuador and Peru.— May possibly be P. cr'ispalum, L. (Plum. t. 

 102. B.). 



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

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

 Jie 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. — HI: Sp. 4. p. 178. 2nd Cent. t. 12. 



Hab. Andes of Quito, Jameson, 349. 



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

 scales ; st. close, 3-5 in. 1., more or less villose, often bent ; fr. G-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 ; soi'i copious, prin- 

 cipally iu two rows in each lobe, immersed. — P. comptoniacfolium, l>csv. ^ 

 Hk. Sp. 4. p. 194. P. scolopendrioides, Hk. ^^ Gr. p. 42. 



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

 figured by Plumier. 



***■"" Lobes reaching nearly dawn to the main rachis. Sp. 119-131. 



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

 slender, naked ; fr. 3-6 in. 1., 2-3 lin. br., the upper part, sometimes the whole, 

 subentire, but more usually pectinato-pinnatitid, witK rigid erecto-patent lobes ; 

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

 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, ¥4e, 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 the texture so rigid that the threadlike midrib remains 

 after the pinnce fall ; Grammitis myosivroides, 8chk. {P. setosum, Mett. Hk. Sp. 4. p. 175), 

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

 one of the curious abnormal conditions of Acrostichmn sorhifollum. 



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