156 



F I L I C E S. 



alternate, divaricate, linear-lanceolate, acuminate and serrulate, the base 

 unequal and cuneate, the inferior half often slightly rounded. Rhachis 

 naked, sulcate on the upper side. Veins thickish, of a pale claret- 

 colour, mostly simple, but occasionally forking near the costa. Sori 

 approximate, in an advanced stage becoming confluent and concealing 

 nearly the whole of the under surface of the pinnae, the costa and half 

 a line in breadth at the margin only being naked. Indusium narroio, 

 recurved, black, coriaceous, entire. 



The affinity of this with the species immediately preceding is cer- 

 tainly very remote, but in the grouping of a limited number of species 

 of a large genus, such associations will occur. We are at a loss to 

 decide to what known species the present plant is most related. 



§ 2. ACROPTERIS, Link, J. Sm. 



* Frondes pinnatob. 



23. ASPLENITTM FLABELLIFOLIUM, Cav. 



Asphnium flabellifoUum, Cav. ex Sw. Syn. Fil. p. 81 & 273, t. 3, f. 2; Willd. Spec. 

 PI. 5, p. 333 ; E. Br. Prodr. Fl. Nov. Holl. p. 150 ; A. Cunn. in Hook. Comp. 

 Bot. Mag. 2, p. 364. 



Hab. Vicinity of Port Jackson and Puen Baen, New South Wales. 

 New Zealand, near Man aw a Bay ; in crevices of rocks : also in the 

 interior of the Northern Island ; among decomposed lava. 



Remarkable for its rambling habit, flabelliform pinnae, and the 

 attenuated filiform rhachis, rooting at the point. 



24. Asplenium rhomboideum, Sp. Nov. (Tab. 21.) 



A. stipite filiformi prolifero; frondibus glabris membranaceis lineari- 

 lanceolatis pinnatis; pinnis ovato-rhombeis bipartitis integrisve basi 

 ino3Qualibus cuneatis, segmentis ovato-cuneatis crenatis ; rhachi hinc 

 sulcata; venis ramosis; indusio linear i-oblongo piano stramineo inie- 

 gerrimo. 



