Polypodiacem.] SANDWICH ISLANDS. 103 



Ord. LVI. GLEICHENIEjE. Kaulf. 

 1. Gleichenia Hermanni. Br. — Hook, et Grev. Ic. Fil. t. 14. 



Ord. LVII. POLYPODIACEM. 



1. Acrostichum splendens. Willd. Sp. PI. v. 5. p. 104. Gaud, in Freyc. Voy. v. 1. p. 303. 

 (non Kaulf.) 



This is assuredly the plant of Gaudichaud, and agrees with Willdenow's description ; but Kaulfuss must 

 have some other species in view when he describes the fronds as on both sides " stellato-squamosm" 



1. Polypodium atro-punctatum ; frondibus sparsis lineari-lanceolatis elongatis acuminatis 

 basi attenuatis utrinque glabris supra squamosis aut atro-punctatis margine subundulatis, 

 soris solitariis rotundato-oblongis subimmersis junioribus squamuloso-tectis. Gaud, in Freyc. 

 Voy. v. 1. p. 346. — Pleopeltis elongata. Kaulf. Enum. Fil. p. 346, (certe\) 



Gaudichaud has accurately described this species, and we think it equally certain that it is the Pleopeltis 

 elongata of Kaulfuss ; but, in our specimen, the scales on the underside of the frond, and of the fructifi- 

 cation, are quite obliterated, and indeed are described as so very fugacious, that we prefer arranging the plant 

 with the Polypodia rather than with the Pleopeltides. 



2. Polypodium. setigerum; fronde simplici lineari-lanceolata brevissime stipitata utrin- 

 que margineque pilis rigidis sparsis atro-purpureis, soris biserialibus approximatis rotun- 

 datis setosis. (Tab. XXI. A.) 



Radix csespitosa, fibrosa. Stipites 5-6 ex eadem radice, brevissimae. Frondes vix digitales, liueari-lan- 

 ceolatae, subcoriacese, obtusse, flavo-virides, costa obscura, basi attenuate, utrinque margineque pilis rigidis sen 

 setis atro-purpureis patentibus sparsis obsitse, margine piano. Sori in parte superiore frondis numerosi, 

 approximati, orbiculati, intense fusci. Capsulce setis immixtaa. 



Tab. XXI. A. Fig. I, Portion of the frond, with a sorus; Jig. 2, Capsules; fig. 3, Hairs from the frond: 

 — magnified. 



3. Polypodium Pseudo-grammitis ; frondibus sparsis linearibus basi longissime attenuatis 

 margine subundulato-crenulatis utrinque glabris, soris rotundato-oblongis sparsis rarissimis, 

 stipite marginato, caudice capillari paleaceo radicante, squamis lanceolatis, radicibus villosis. 

 (Tab. XXI. B.) — Gaud, in Freyc. Voy. p. Mb. — Grammitis tenella. Kaulf. Enum. Fil. 

 p. 84. 



The fronds of this are very tender and membranaceous, 1-6 inches long, sometimes unequally forked to- 

 wards the extremity. 

 Tab. XXI. B. Fig. 1, Portion of the frond, with a sorus; fig. 2, Capsules: — magnified. 



4. Polypodium spectrum; caudice longe repente, frondibus simplicibus liastato-cordutis 

 3-5-lobatis latissimis membranaceis acutissimis reticulatis, soris sparsis, stipite glabro. 

 Kaulf. Enum. Fil. p. 94. — P. Thouinianum. Gaud, in Freyc. Voy. p. 348. t. 5. f. 1. 



Fronds 6-8 inches in diameter. This remarkable plant does not appear to have been found any where 

 but in the Island of Oahu, whence we also possess specimens, gathered by Mr. Macrae. 



5. Polypodium pellucidum; frondibus profunde pinnatifidis, laciniis lineari-lanceolatis ob- 

 tusiusculis repando-dentatis, squamulis dorsalibus submarginalibus albis, venis dichotomo- 

 furcatis striisque interstitialibus pellucidis, soris solitariis. Kaulf. Enum. Fil. p. 101. Gaud, 

 in Freyc. Voy. p. 356. 



