356 i. filices. [ Trichomanes . 
Capsules sessile on a filiform, elongate, often exserted receptacle, depressed, 
girt by a complete horizontal striate ring. 
A large tropical genus of ferns, of which one species is found in various damp insular and 
mountain regions of the north temperate zone, and several in the south temperate. 
Frond glabrous, erect, simple, reniform 1. T. reniforme. 
Frond glabrous, erect, lurid-green, much divided. 
Frond lanceolate, pale-green, membranous 2. T. strictum. 
Frond ovate or deltoid, dark green, rigid 3. T. elongatum. 
Frond glabrous, pendulous, very delicate, membranous, divided. 
Margin of frond thickened. Midrib simple 4. T. humile. 
Margin of frond not thickened. Midrib simple 5 . T. Colensoi. 
Margin of frond not thickened. Midrib branching 6. T. venosum. 
Frond densely clothed with stellate down 7 • T. Malingii. 
1. T. reniforme, Forst. ; — FI. N. Z. ii. 16. Rhizome rigid, stout, 
creeping. Fronds remote, rigid, erect, 4-8 in. high, dark green, transparent 
when fresh, brown and horny when dry, reniform with a deep sinus, 2-4 in. 
broad, slightly decurrent on the stout glabrous stipes ; veins repeatedly forked, 
rarely reticulated. Involucres numerous, often crowded along the edge of 
the frond, tubular or urceolate ; receptacles club-shaped, exserted. — liook. 
Sp. Fil i. 115 ; Fil. Exot. t. 2. 
Abundant throughout the Northern and Middle Islands, Banks and Solander, etc. 
One of the most beautiful and singular ferns, confined to these islands. 
2. T. strictum, Menzies ; — FI. N. Z. i. 17. Rhizome very short, 
stout, sending out many rigid roots, with many fronds tufted at its top. 
Fronds crowded, rigid, erect, dark green, 4-10 in. high, linear-oblong or lan- 
ceolate, pinnate ; stipes stout, black, terete, slightly winged, with red-brown 
shining bristles at the base ; pinnae lanceolate, ascending or recurved, 2- or 3- 
pinnatifid or irregularly cut ; segments very narrow, obtuse or retuse ; midrib 
stout, unbranched. Involucres erect, free, pedicelled ; receptacle included or 
exserted. — Hook. Sp. Fil. i. 136 ; T. leptophyllum, A. Cunn. ; T. Cunniny- 
hamii, Van den Bosch. 
Northern Island : Hokianga, A. Cunningham. Middle Island : Dusky Bay, Menzies, 
Hector and Buchanan ; Massacre Bay, Lyall, Travers. Probably the same as a Fiji 
Island species. 
3. T. elongatum, A. Cunn.; — FI. N. Z. ii. 17. Rhizome short, hori- 
zontal, woody, with strong root-fibres and crowded ascending fronds. Fronds 
4-10 in. high, rigid, erect, ovate or deltoid, 2-pinnate, lurid green, often 
covered with mosses, etc. ; stipes rigid, stout, terete, not winged, slightly 
hairy at the base ; pinnae imbricate, crowded, oblong-cuneate, inciso-pinnatifid ; 
segments broad, acute or notched at the tip ; midrib stout, not branched. 
Involucres very numerous, supra-axillary, crowded, cylindric ; lips short ; re- 
ceptacles long, rigid, exserted.- — Hook. Ic. PI. t. 701 ; Sp. Fil. i. 134. 
Abundant iu deep shaded woods throughout the Northern aud Middle Islands, 
Banks and Solander , etc. 
4. T. humile, Forst.; — FI. N.Z. ii. 16. Rhizome capillary, creeping. 
Fronds pendulous, very pale, membranous, transparent, 1-4 in. long, linear- 
oblong, 1- or 2-pinnatifid ; stipes slender, winged above; pinnae ascending, 
pinnatifid or forked, quite entire, obtuse, glabrous, margin thickened ; midrib 
