54 I. — FiLicES. [Adiantum, 



3. A. formosum, £r. 



Stipes 12-18 in. long, stout, erect, scabrid, blackish. Fronds 18-24 

 in. long, 12-18 in. broad, deltoid, 3- or 4-pinnate, primary branches 

 remote; rachis ilexuous, pubescent above, shining and glabrous below; 

 pinnules ^-^ in. long, subcoriaceous, glabrous, oblong, rounded or 

 oblique, cuneate at the base, more or less lobed, the lower ones 

 stalked. Sori numerous, rather small, placed on the lobes or teeth 

 of the pinnules ; involucres rather elongate, narrow, between obreni- 

 form and transversely oblong. 



Distribution. — Temperate Australia. 



In New Zealand this species is confined to the North Island, 

 where it seems to be very local. It occurs in the Kaipara and 

 Wangarei districts in the far north, and also between the Wairarapa 

 and Manawatu rivers. 



4. A. fulvum, Baoul. 



Stipes 6-9 in. long, strong, erect, polished, blackish-brown, scabrous 

 below, with rough hairs. Fronds 9-18 in. long, 6-8 in. broad, olive- 

 green, ovate-deltoid ; rachis scabrous and rather hairy, glossy ; 

 terminal pinna 4-6 in. long, about 1 J in. broad ; lateral pinnfe erecto- 

 patent, lower branched again ; pinnules rather coriaceous, ^ in. long, 

 •J in. broad, dimidiate, lower margin nearly straight, upper almost 

 parallel, and with sharply-toothed lobes, like the oblique outer 

 margin. Sori large, numerous, placed in small depressions round 

 the upper and outer margins ; involucres obreniform. 



, T Distribution. — New South Wales, Norfolk Island, and Fiji, 

 "''^xfeiurring in woods in both islands at low-lying elevations. It is 

 ' inost common in the northern part of the North Island, but extends 

 to the middle of the South Island, where it becomes local. I am not 

 aware of its having been found to the south of Banks' Peninsula. 



5. A. sethiopieum, L. (Pi. II. fig. 3.) 



Rhizome tufted. Stipes 4-9 in. long, very slender, erect, blackish- 

 brown, glabrous and polished,, as is the very slender flexuous rachis. 

 Fronds 9-18 in. long, 4-9 in. broad, usually deltoid in outline, 3- or 4- 

 pinnate ; lower pinnules deltoid ; most of them suborbicular, ^-J- in. 

 broad, base cuneate, rounded or nearly straight, upper margin with 

 broad, shallow lobes, flaccid and thinly-membranous in texture, pale- 

 green. Sori 2-6, rather large, in the hollows of the upper margin ; 

 involucres obreniform or transversely oblong. 



/Synonyms. — A. assimiile, Swartz ; A. trigonum, LabiU. ; A. emar- 

 ginatum, Bory. ; A. thalictroides, Willd. ; A. crenatum, Pdr. 



Distribution. — Throughout many tropical regions: — In Africa, from ^ 

 the Cameroons on the W., and Abyssinia on the E., to the Cape 

 colony ; also in Bourbon and Madagascar ; Southern Islands ; in 

 America, from Texas and California to Chili and Monte Video ; 

 temperate and tropical Australia ; Tasmania. 



