988 FILICES. [Asplenium. 
Subgenus II, AtTHyRium. Veins free, forked. Sori short; indusiwm tumid or 
almost cylindrical, more or less curved. 
Fronds 1-4 ft., broadly ovate or deltoid, membranous, 
2-3-pinnate a oe 5 mG .. ll. A. wmbroswm. 
Subgenus III. Dipuaztum. Veins free, pinnately branched. Indusia linear or 
linear-oblong, some of them (often the lowest only) dowble and then open- 
ing im opposite directions. 
Fronds 6-12 in., ovate-lanceolate, membranous, pinnate ; 
pinne 13-3 in., deeply pinnatifid ae sie .. 12. A. japonicum. 
1. A. flabellifolium, Cav. Demonstr. 257.— Rhizome short, 
stout, clothed at the top with blackish-brown subulate scales. 
Stipes 1-4 in. long, rarely more, slender, flexuous, smooth or slightly 
scaly, green above, dark-brown below. Fronds few, tufted at the 
top of the rhizome, weak, decumbent or prostrate, rooting at the 
elongated and naked apex, 6-14in. long, 4-lin. broad, linear, 
membranous, flaccid, pinnate; rhachis smooth, green. Pinne 
10-25 pairs, distant, the upper becoming gradually smaller and 
disappearing some distance below the tip of the rhachis, very 
variable in size and shape, shortly stipitate, +4in. long and broad, 
flabellate or rhomboid-cuneate or orbicular-reniform, sometimes 
auricled or almost 3-lobed at the base, coarsely crenate-toothed ; 
veins flabellate. Sori several to each pinna, oblique, linear-oblong 
when young, often ‘confluent when old.—A. Cunn. Precur. n. 192;- 
Raoul, Choiz, 37; Hook. Exot. Fil. t. 208; Sp. Fil. iii. 146; Hook. 
f. Fl. Nov. Zel. i. 38; Handb. N.Z. Fl. 8372; Hook. and Bak. Syn. 
Fil. 195; Benth. Fl. Austral. vii. 745; Thoms. N.Z. Ferns, 73; 
Freld, N.Z. Ferns, 116, t. 6, f. 6. 
NortH AND SoutH Isxtanps: Open rocky places from the Bay of Islands to 
Otago, not uncommon. Sea-level to 2000 ft. 
Also in temperate Australia and Tasmania. Sometimes the upper pinne 
are produced into naked tips which root like the apex of the frond. This state 
has been described by Mr. Colenso as var. samosum (Trans. N.Z. Inst. xx. 228). 
2. A. Trichomanes, Linn. Sp. Plant. 1540.—Rhizome short, 
thick, fibrous, clothed at the top with linear-subulate blackish 
scales. Stipes 1-4in. long, naked, dark chestnut-brown, smooth 
and glossy, narrowly margined above. Fronds tufted at the top 
of the rhizome, rigid, erect, 3-12in. long, 4—3in. broad, linear, 
subcoriaceous, pinnate ; rhachis red-brown, margined throughout. 
Pinnz 15-40 pairs, spreading, sessile or nearly so, ++4in. long, 
oblong or obovate, rounded at the tip, obliquely cuneate at the 
base, sometimes auricled on the upper edge, margins crenate- 
serrate. Veins few, indistinct, oblique, forked above the middle. 
Sori oblique, linear-oblong, 3-6 on each side of the pinna, often 
confluent when old.—Hook. Sp. Fil. iii. 1386; Hook. f. Handb. N.Z. 
