Adiantum. | FILICES. 963 
in. long or more, more membranous, upper and outer margins 
deeply lobulate, the lobules incised. Sori numerous, placed in 
shallow depressions at the top of the teeth or lobules, broader than 
long, transversely oblong or oblong-reniform.—Hook. Sp. Ful. ii. 51, 
t. 868; Hook. f. Fl. Nov. Zel. ii. 21; Handb. N.Z. Fl. 360; Hook. 
and Bak. Syn. Fil. 119; Benth. Fl. Austral. vii. 724; Thoms. N.Z. 
Ferns, 54; Field, N.Z. Ferns, 81, t. 6. 
Norru Isztanp: Auckland—Alluvial banks of the northern Wairoa River, 
from Tangiteroria to a few miles above Dargaville, T. F. C. Wellington— 
Manawatu River and its tributaries, from Woodville to below Palmerston North, 
Colenso! Enys! Field! Hamilton! &c. 
Also a native of eastern Australia. Hasily recognised by its large size, 
decompound fronds, and numerous small somewhat rigid pinnules. 
5. A. affine, Willd. Sp. Plant. vy. 448.—Rhizome long, creep- 
ing, stout, clothed with glossy dark chestnut-brown scales. Stipes 
4-12 in. long or more, stout, erect, shining-black, rough and scaly 
at the very base, smooth and polished above. Fronds 6-15in. 
long. 3-9 in. broad, ovate-deltoid in outline, bipinnate or tripmnate 
at the base, pale-green above, usually glaucous beneath, quite 
glabrous or the secondary rhachises pubescent above. Pinne 
2-3 pairs with a long terminal one sometimes 6-9 in. long, in large 
specimens the lowest pair again branched. Pinnules 4-1in. long, 
1-tin. deep, petiolate, dimidiate, broadly obliquely-oblong or rhom- 
boidal ; lower margin straight, entire, base truncate; upper margin 
and the obtusely rounded apex deeply crenate-toothed; texture 
firm, subcoriaceous. Sori numerous, rather large, 6-14 to a pinnule, 
placed in small notches at the tips of the lobes of the upper and 
outer margins, not in the sinuses between the lobes. Indusium or- 
bicular-cordate or reniform.—Hook. and Bak. Syn. Fil. 117; Benth. 
Fl. Austral. vii. 724; Thoms. N.Z. Ferns, 53; Field, N.Z. Ferns, 80, 
t.6,f.1. A. Cunninghamii, Hook. Sp. Fil. ii. 52, t. 864; Hook. f. Fl. 
Nov. Zel. ii. 21; Handb. N.Z. Fl. 360. <A. formosum, A. Rich. 
Fl. Nouv. Zel. 88; A. Cunn. Precur. n. 208; Raoul, Choix, 38 (not 
of B. Br.). A. pullum, Col. in Trans. N.Z. Inst. xxv. (1873) 319. 
KERMADEC IsLANDS, NortH aND SourH Isnanps, Stewart ISLAND, 
CuatHAM IsLanps: Abundant in lowland districts throughout. 
Also in Australia, according to Bentham (Fl. Austral. vii. 724). Very 
variable in size, the amount of branching of the frond, and in the size and 
shape of the pinnules. When growing on exposed rock-faces it is often dwarfed 
to an inch or two. Most of the Chatham Islands specimens that I have seen are 
less compound, with larger and coarser narrower pinnules, corresponding, I 
presume, with the variety Chathamicum of Mr. Field (N.Z. Ferns, 81). A 
curious form gathered by Mr. Hamilton on limestone crags at Moteo, near 
Puketapu, Hawke’s Bay, has the tips of the pinne largely cristate, and the 
pinnules very irregular in shape. It is the A. Cunninghamii var. heterophyllum 
of Colenso (Trans. N.Z. Inst. xx. (1888) 218). States with the secondary 
rhachises somewhat pubescent above, and with rather narrower and more acute 
pinnules, seem to show a marked approach to 4. fulvwm. 
