274 F I L I C E s. 



Dichsoniaadiantoides, Humb. & Bonpl. ex Willd. Spec. PL p. 488 ; Hook. Spec. Fil. 

 1, p. 75, t. 26, B. 



Hab. Organ Mountains, Brazil. 



This is a large, handsome, and very distinct species, having smooth 

 and tripinnate fronds. 



4, Sitolobium Samoense, Sp. Not. (Tab. 38.) 



L. stipite Icevi; frondibus amplis glabris flaccidis tripinnatis ; pinnis 

 primariis et secundariis oblongo-lanceolatis acuminatis apice serratis; 

 pinnulis lanceolato-oblongis obtusis lobato-serratis basi obliquis cuneatis, 

 lobo infimo superiore majore; rhachi partiali costa venisque dichotomis 

 pills articulatis hirsutis; sorts parvis in dente brevi prope badm 

 sinuum impositis solitariis; indusio reflexo cyaihiformi. 



Hab. Island of Savaii, Samoan Group. 



Stipe smooth. Fronds very large, tripinnate, glabrous on both sides, 

 flaccid, the upper surface somewhat shining. The primary and 

 secondary divisions are alternate and spreading, oblong-lanceolate-, and 

 contracted rather suddenly into a finely serrated point. Pinnules 

 about half an inch in length, approximate, lance-oblong, obtuse, ob- 

 liquely cuneate at the base, lobate-serrate, the points of the lobes some- 

 times bluntly toothed and slightly recurved, the lower and superior 

 one invariably the largest. The rhachis of the primary and secon- 

 dary pinnae on the upper side are partially furnished with a short 

 rufous pubescence ; while on the under side only the secondary ones, 

 with the costa and veins, are beset with scattered articulated hairs. 

 Sori very small, a single one being seated on a short tooth arising from 

 the inner edge of the lobes of the pinnules, near the base of the sinuses. 

 Indusium reflexed, cup-shaped, its mouth quite entire. 



This species is closely related to Dicksonia apii/olia, Swartz ; but is 

 distinguished by its more reflexed, cup-shaped indusium, and appa- 

 rently larger fronds. 



