MARATTIACE^. 



311 



Hab. Luzon, Philippine Islands; on Mount Majaijai, at the eleva- 

 tion of 3,000 feet. 



Trunk stout, 4 to 6 feet high, crowned with bipinnate fronds, of 15 

 feet in length. Pinnae 21 to 3 feet long, and furnished with upwards 

 of 90 pinnules: these are linear-lanceolate, nearly opposite, usually 4 or 

 5 inches long and 5 lines broad, attenuated into a narrow, sterile, 

 serrated point, of about an inch in length, the margin obtusely dentate, 

 the base cordate-truncate. Ehachis of the pinnules on the under side 

 beset with brown, shrivelled, paleaceous hairs. Veins either simple or 

 forked, furnished with a slender and pellucid intermediate nerve. Line 

 of sori close within the margin, narrow and approximate, with from 

 9 to 11 sporangia in each receptacle. 



This is distinguished from A. evecta by the more elevated trunk, 

 the longer pinnae, with a much greater number of narrower atte- 

 nuated pinnules, by the nerve between the veins being more evident, 

 and the sporangia smaller and fewer. To judge from the description 

 of A. longifolia of Hooker and Greville, our plant is more nearly 

 allied to it. 



98. MARATTIA, Sw. 



(Myriotheca, Bory.) 



1. Marattia alata, Sw. 



Marattia alata, Sw. Syn. Fil. p. 168 ; Willd. Spec. PI. 5, p. 66 ; Hook. & Am. Bot. 

 Beech. Voy. p. 102; Hook. Bot. Misc. 3, p. 224; Hook. Gen. Fil. t. 26. 



Hab. Sandwich Islands ; frequent in humid forests. 



Rootstock globose, formed of numerous thick and succulent, black 

 scales. Stipes from 3 to 5 feet long, smooth, sulcate in front. Fronds 

 constantly tripinnate, with large and spreading pinnae. Pinnules sub- 

 petiolate, oblong, subacute, and serrate. Rhachis of the secondary 

 pinnae winged, and sparsely furnished beneath with lacerated brown 

 scales. Sporangia usually 10 on a pinnule. 



