152 FILICES. 



rhaclii alato-marginata ; venis immersis farcatis ; indusio lato mem- 

 branaceo lacero. 



Hab. Sandwich Islands ; on Mouna Loa and Mouna Kea, island of 

 Hawaii ; also Mouna Haleakala, East Maui : at an altitude of 8,000 

 to 10,000 feet. Obrajillo, Andes of Peru. 



Plant tufted; the rootstock short and scaly, with many slender, 

 wiry, black, rootlets. Fronds erect, numerous, linear, from 3 inches 

 to a foot high, with ovate or ovate-oblong, coriaceous, crenate, and 

 nearly sessile pinnce, articulated on a short petiole, and falling off at an 

 advanced age, having a denuded, asperous, winged rhachis, which, 

 together with the stipe, is black and shining ; the latter varying from 

 one to 4 inches in length. . Veins immersed, so as not to be visible to 

 the naked eye, forking near the costa. Sori from 6 to 8 on a pinna. 

 Sporangia in an advanced state becoming confluent. Indusium broad, 

 membranaceous, lacerated. 



This differs from the A. Trichomanes of Linnaeus only in its winged 

 rhachis and fewer sori. 



Plate 20. — Fig. 3. Portion of a plant, of the natural size. 3 a. 

 Portion of the frond; magnified. 



16. Asplenium simile, Blume ? 



Asplenium simile, Blume, Enum. Plant. Jav. 2, p. 181 ? 



Hab. Mount Maijaijai, Luzon, Philippine Islands. 



This has a stipe 6 inches long, smooth and round, about the thick- 

 ness of a crowquill at the base. Fronds somewhat over a foot in 

 length, oblong-lanceolate, acuminate, pinnate. Pinnae alternate, petio- 

 late, coriaceous, glabrous, Si inches long and 5 lines broad, elongated- 

 lanceolate, with a very long acuminate point; the base unequal and 

 cuneate ; the margin sharply serrate. Rhachis semiterete, and some- 

 what angular in front. Costa prominent on the upper side. Sori 

 numerous, oblique and decussate. 



