Polypodiaceas.] SANDWICH ISLANDS. 105 



acuminate, the secondary lanceolate or oblong and acuminate (broadest at the base) ; the ultimate divisions, 

 or pinnules, oblong, obtuse, strongly and closely serrated with incurved mostly entire teeth. We can find no 

 appearance of an involucre on the sori. 



9. Polypodium unidentalum; decompositum laxe tripinnatum, pinnulis pinnatifidis laneeo- 

 latis attenuatis, laciniis oblongis obtusis subfalcatis crenatis, sinubus soriferis unidentatis. 



The specimens in the Herbarium of this Polypodium likewise appear to be but fragments, separated from a 

 much larger frond. It is remarkable for the lax distant divisions and subdivisions; for the sori being con- 

 fined to the sinuses of the notched segments ; and for those sinuses having a sharp tooth beneath, or a little 

 on one side of the sinus. 



10. Polypodium crinale; decomposite pinnatum, pinnis oblongo-lanceolatis obtusissimis 

 rigidis pinnatifidis glabris, laciniis ovatis obtusis, marginibus incurvis unisoriatis, rachibus 

 costaque subtus paleaceo-crinitis. 



Fragments only of this very distinct Fern exist in the Collection, from which we may infer that the plant 

 is at least tripinnate; the pinnules 1-2 inches long, of a rigid, almost coriaceous texture, pinnatifid : each lobe 

 of the pinnule bearing a sorus of naked capsules near its superior margin. The rachides, general and partial, 

 and the costa, beneath, are almost shaggy with long, spreading, subulate, or setaceous scales. 



1. Adenophorus bipinnatus; frondibus lanceolatis bipinnatifidis, laciniis lineari-clavatis 

 decurrentibus, stipite terete obscure marginato. — Gaud, in Freyc. Voy. p. 365. t, 8. f. 2. 

 Hook, et Grev. Ic. Fil. t. 174. — A. Tamarisci? Hook, et Grev. Ic. Fit. t. 175. — Polypo- 

 dium Tamariscinum. Kaulf. Enum. Fil. p. 117. 



2. Adenophorus hymenophylloides ; frondibus lineari-oblongis bipinnatis, laciniis obovatis 

 decurrentibus, stipite gracillimo filiformi immarginato. Hook, et Grev. Ic. Fil. t. 176. — 

 A. minutus. Gaud, in Freyc. Voy. p. 365. t. 8. / 3. — Polypodium hymenophylloides. 

 Kaulf. Enum. Fil. p. 118. 



1. Nephrodium exaltatum. Sw. 



2. Nephrodium resiniferum; frondibus pinnatis, pinnis suboppositis linearibus acutis 

 inciso-serratis subtus hirtis, venis resinoso-globulosis, rachi pubescente, soris submarginali- 

 bus, indusiis hirtis. Kaulf. Enum. Fil. p. 237, (sub Aspid.) 



3. Nephrodium Dubrueilianum ; frondibus fasciculatis, pinnis lanceolatis acuminatis basi 

 truncatis subpinnatifidis utrinque glabris, laciniis ovato-falcatis subacutis infimis maximis, 

 soris minutis biserialibus costse media? approximatis, indusio peltato-ciliato, stipite rachique 

 glabriusculis. — Polystichum Dubrueilianum. Gaud, in Freyc. Voy. p. 333. t. 9. — Aspidium 

 cyatheoides? Kaulf. Enum. Fil. p. 234. 



This is certainly the plant of Gaudichaud, above referred to ; but in our specimens the pinme are rather 

 deeply serrated than " subpinnatifid." It is equally, perhaps, the A. cyatheoides of Kaulfuss; though differ- 

 ing in being glabrous on the underside. 



4. Nephrodium apifolium; frondibus bipinnatis, pinnis lato-lanceolatis membranaceis 

 pinnatifidis acuminatis superioribus confluentibus, laciniis oblongo-lanceolatis sinuatis snb- 

 pinnatifidis glabris subciliatis supra puberulis, soris subserialibus, stipite rachique atro-pur- 

 pureis nitidissimis glabris, indusiis orbicularibus sinu parvo affixis. — Aspidium apifolium r 

 Schkuhr, Fil. t. 56. b. — Aspidium sinuatum. Gaud, in Freyc. Voy. p. 343. (non Lalnll.) 



This appears to be a tall Fern, having a remarkably glossy purple-black stipes and rachis, with membraua- 



