20 FILICES. [ Loxsoma, 
lowermost opposite; secondary ovate - lanceolate or lanceolate, pinnate 
below, pinnatifid above. Ultimate segments oblong, subacute, toothed or 
notched. Sori inserted in the notches, the indusium pointing backwards 
from the frond.—Raoul Choix (1846) 48; Hook. Gen. Fil. (1842) +. 15 ; 
Sp. Fl. 1 (1846) 86; Garden Ferns (1862) t. 31; Hook. f. Fl. Nov. Zel. ii. 
(1855) 18; Handh. N.Z. Fl. (1864) 368; Hook. and Bak. Syn. Fil. (1873) 
56; Thoms. N.Z. ferns (1882) 35; Freld N.Z. Ferns (1890) 55, t. 12, f. 1; 
Cheesem, Man. N.Z. Fi. (1906) 947. Trichomanes coenopteroides Harv. ex 
A. Cunn. Precur. (1836) n. 215, Davalha dealbata A. Cunn. Precur. Le. 
Nortu Istanp: Auckland—In woods from Mangonui and Kaitaia southwards to 
Te Aroha, not common. Most often seen in the heart of the Cape Colville Peninsula. 
Sea-level to 1200 ft. 
A ike remarkable fern, with the habit of a coriaceous Davallia or Dicksonia, and 
the sorus of a T'richomanes. But the sporangia differ widely from those of T’richomanes 
in having an oblique ring, and the dehiscence is vertical, like that of Gleichenia and 
Schizaea. It has generally been placed in the tribe Hymenophyllaceae, but the investi- 
gations of Professor Bower (Phil. Trans. excii, 47 to 52) seem to prove that Presl and 
Bommer were right in regarding it as constituting a distinct tribe, having affinities 
with Gleichenia and Schizaea on the one hand, and on the other with the Hymeno- 
phyllaceae and Dennstaedia. 
4, DICKSONIA L’Herit. 
Usually tree-ferns, but in some species the caudex is short or absent. 
Fronds large 2-3-pinnate. Stipes smooth or muricate. Veins pinnately 
forked, veinlets always free. Sori near the margin of the frond, globose, 
placed on the apex of a veinlet; receptacle more or less elevated. 
Indusium distinetly 2-valved, the upper valve continuous with the margin 
of the frond and usually similar to it in texture, consisting of an incurved. 
or concave lobule; lower valve membranous or coriaceous. Sporangia 
numerous, sessile or nearly so, bursting transversely ; ring oblique, complete. 
Excluding the sections Cibotitum and Patania (Dennstaedtia Bernh.), which seem 
to be more appropriately kept separate, the genus contains about 17 species, widely 
dispersed through the tropical and subtropical regions of both hemispheres. The 
3 New Zealand species are endemic, but one of them differs but slightly from the 
Austrahan D. antarctica Labill. 
Trunk 6-20 ft., slender, black. Stipes blackish-brown, tubercled. 
Sori 6-12 on each segment es 4 ie .. 1. D. squarrosa. 
Trunk 6-20 ft., very stout, brown. Stipes short, pale - brown, 
smooth. Sori 3-6 to each segment . .. 2. D. jibrosa. 
Trunk wanting or very short. Pecti rong, smooth, pale. Sori 6-12 
to each segment .. . : .. 3. D. lanata. 
1, D. squarrosa Swartz Syn. Fil. (1806) 186.— Trunk 6-20 ft. high, 
slender, black or dark-brown, clothed above with the persistent bases of 
the old stipites. Fronds 4-8 it. long, rarely more, 2-34 ft. broad, oblong- 
lanceolate, 2-3-pinnate, rigid and coriaceous. Stipes slender, dark-brown 
or black at the base, paler above, when young clothed with long brownish- 
black hairs or setae, almost glabrous when old, sides and under-surface 
rough with numerous small tubereles; rhachis and costae clothed with 
deciduous reddish-brown wool above, rough with minute tubercles beneath. 
Primary penie 10-20 in. jee: 3-5 in. broad, oblong-lanceolate, acuminate ; 
secondary 13-3 in. long, }-4in. broad, deeply pinnatifid. Barren segments 
ovate or oblong, rigid, sharply toothed, the teeth almost pungent; fertile 
smaller and much contracted, pinnatifid. Sori copious, covering the whole 
