360 
I. FILICES. 
[. Adiantum . 
Sori situated on the lobules or teeth of the pinnules. 
Rachis pubescent above. Piunules rigid, glabrous 4. A.formosum. 
Rachis glabrous. Pinnules rigid, glabrous, minutely rough below . 5. A. Cunninghamii. 
Rachis pubescent above. Pinnules rigid, hirsute or setulose below . 6. A.fulvum. 
1. A. hispidulum, Swartz; — FI. N. Z. ii. 20. Frond broad, often 
2- partite, 6-12 in. long, broadly fan-shaped or pedate, 2- or 3-pinnate ; 
stipes dark -brown, shining, scabrid, 3-10 in. high; rachis hispid; branches 
spreading and rather recurved ; pinnules stipitate, coriaceous, olive-green, 
striate, hispid, obliquely oblong, obtuse, often serrulate or acutely toothed, 
cuneate at the base, | in. long. Sori numerous, on the upper margins of 
the pinnules, situated in the notches, red-brown, orbicular. — Hook. Sp. Fil. 
ii. 31 ; A. pitbescens, Schkuhr ; A. pedutum, Forst., not Linn. 
Northern Island: common from the Bay of Islauds to Cook’s Straits. Kermadec 
Islands, Macgillivray. Also found in India, Africa, Australia, and the Pacific islands. 
2. A. afSne, Willdenow ; — FI. N. Z. ii. 20. Frond oblong or ovate in 
Outline, pinnate or 2- or 3-pinnate, membranous, flaccid, sparingly branched ; 
stipes 6-8 in. high and rachis slender, glabrous, polished, black; pinnules sti- 
pitate, -i-f in. long, dimidiate-oblong, falcate, truncate at the tip, crenate on 
the upper margin, dark green, with a few scattered hairs on the upper surface. 
Sori few, scattered, in the notches of the fronds ; involucre reniform or 
truncate, pale. — Hook. Sp. Fil. ii. 32 ; A. trapeziforme, Forst. ; A. setu- 
losum , J. Smith. 
Northern and Middle Islands: common, Forster, etc. Also found in Norfolk 
Island. 
3. A. aethiopicum, Linn. ; — FI. N. Z. ii. 21. Rhizome tufted. Frond 
oblong in outline, 1-3 in. broad, pale green or yellowish, flaccid, membranous, 
3- or 4-pinnate ; stipes 4-10 in. high, slender and with the almost capillary 
flexuous rachis black, glabrous, polished ; pinnules stipitate, orbicular, per- 
fectly glabrous, with cuneate bases, 1 in. broad, upper margin lobed. Sori 
2-6, in the notches ; involucre rather large, reniform or transversely oblong, 
pale. — Hook. Sp. Fil. ii. 37. t. 77 A; A. assimile, Swartz; A. trujonum, 
Labill. FI. Nov. Holl. t. 248, f. 2. 
Abundant throughout the Northern and Middle Islands, Banks and Solander, etc. 
Easily distinguished by its tufted rhizome, very slender glabrous habit, and rounded mem- 
branous pinnse. A common fern in Australia, Tasmania, and many tropical countries. 
4. A. formosum, Br.; — FI. N. Z. ii. 21. Frond broad, deltoid, 4- 
pinuate or decompound, primary branches remote ; stipes 1-3 ft. high, stout, 
scabrid, shining, black ; rachis flexuose, pubescent on the upper surface, 
shining and glabrous below ; pinnules small, stipitate, f in. long, rigid, 
glabrous, oblong or obliquely rhomboid, obtuse, cuneate at the base, upper 
and outer margin creuate and toothed with retuse lobules, lower margin 
straight or arched. Sori upon the lobules or teeth of the pinnules ; invo- 
lucres transversely elongate, narrow. — Hook. Sp. Fil. ii. 51, t. 86 B. 
Northern Island; banks of the Manganaitaka river, Colensn ; Kaipara and Wangarei 
(Mrs. Jones). A native also of New South Wales and the Pacific islands. 
5. A. Cunninghamii, Hook. Sp. Fil. ii. 52. t. 86 A ; — FI. N. Z. ii. 
21. Rhizome creeping, scaly. Frond sparingly irregularly branched, deltoid 
