Polypodiacem.] 



SOCIETY ISLANDS. 



75 



elongated, the whole plant is much larger, the fronds themselves a foot or more in length, the pinnae longer 

 and narrower : yet we possess specimens, from other sources, which seem to unite the two. 



1. Blechnum orientate. Linn. 



2. Blechnum occidentale. Linn. 



This is identical with the West Indian B. occidentale, and probably the same as the B. caudatum of Cav. 

 from the Philippine islands. 



1. Sadleria pallida; pinnulis approximates nervosis, rachi paleacea. 



This is a true Sadleria of Kaulfuss, a genus, however, which scarcely differs from Blechnum, except in 

 the hardened nature of the involucres, the compound fronds, and somewhat arborescent caudex. The only 

 species hitherto described, is a native of the Sandwich Islands, which differs from the present in its naked 

 rachis, more elongated pinnae, more remote and narrower pinnules which are quite destitute of nerves, the 

 dark colour of the whole frond, and almost black involucre. As some of the Sandwich Island and Tahiti 

 Collections were mixed, it is probable that this plant was found in the former place, particularly as it occurs 

 also among specimens undoubtedly from these islands. 



1. Lomaria procera? Desv. — Blechnum procerum. — Willd. — Sw. — Labill. Fit. Nov. Holt, 

 v. 2. t. 247. 



We have seen only the fertile state of this plant which agrees with the figure of Labillardiere. 

 1. Vittaria rigida ; frondibus linearibus subfalcatis rigidis ecostatis, soris marginalibus. — 

 Kaulf. Fnum. Fit. p. 193. Bory in Duperrey Voy. v. I. p. 274. 

 I. Pteris nemoralis. Willd. 



I. Cheilanthes dissecta; frondibus 3-4-pinnatis, foliolis lineari-oblongis obtusiusculis 

 subpinnatifidis superioribus coadunatis subtus pubescentibus, soris solitariis, rachibus stip- 

 iteque glabris. 



This is a plant of a rather rigid habit, 3 or & times pinnated, with narrow, elongated, more or less pinnatilid 

 or lobed pinnules, whose underside is downy, while the rest of the plant is glabrous. The rachis and stipes 

 are quite destitute of scales. It appears to be most nearly allied to the Cheilanthes arborescens, {Lonchitis 

 tenuifolia, Forst.) 



1. Adiantum pubescens. Willd. — Schkuhr, Fit. t. 116. 



2. Adiantum pidverulentum. Linn. 



We cannot distinguish this from the species in the New World known by that name. 



1 . Davallia pectinata ; fronde ovato-lanceolata coriacea profunde pinnatifida, segmentis 

 lanceolatis crenatis obtusis inferioribus semipinnatifidis, involucris reniformibus marginali- 

 bus. Hook, et Grev. — Sm. Act. Taw. v. 5. p. 414. Hook, et Grev. Ic. Fit. t. 139. — Neph- 

 rodium Gaimardianum. Gaud, in Freyc. Voy. p. 335. t. 12. f. 1. 



2. Davallia solida ; fronde stipiteque glabris, pinna infima bipinnata, foliolis oblongis 

 obtusis inciso-crenatis basi cuneatis, indusiis truncatis. Spr. — Sw. Syn. Fit. p. 132 et 345. 

 Schkuhr, Fit. t. 126. — Trichomanes solidum. " Forst. Prodr. n. 475." 



3. Davallia gibberosa ; fronde supradecomposita glabra subtus glaucescente, foliolis pinna- 

 tifidis, laciniis linearibus integerrimis, fertilibus apice bifidis tumidis. Spr. — Sw. Syn. Fil. p. 

 134 et 351. Schkuhr, Fil. t. 128. — Trichomanes gibberosum. " Forst. Prodr. n. 470." 



Forster says of the ultimate segments of the frond, " segmentis margine interiore infra apicem fructifican- 

 tibus," which well expresses the character of this species : indeed, the sori being not terminal on the lacunae, 



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