968 FILICES. [Chetlanthes. 
cuneate, margins much recurved when dry. Sori roundish or 
oblong, distinct, or ultimately confluent and continuous round the 
margins of the pinnules. Indusium usually elongated, narrow ; 
margins pale, entire or minutely denticulate.—Hook. Sp. Fil. i. 83, 
t. 978; Hook. and Bak. Syn. Fil. 1837; Thoms. N.Z. Ferns, 58; 
Field, N.Z. Ferns, 87, t. 21, f.1. C. tenuifolia, A. Rich. Fl. Noww. 
Zel. 83; A. Cunn. Precur. n. 210; Raoul, Choix, 388; Hook. f. Fl. 
Nov. Zel. ii. 23 (for the greater part, not of Swartz). C. tenuifolia 
var. Sieberi, Hook. f. Handb. N.Z. Fl. 362. C. erecta, Col. m 
Trans. N.Z. Inst. xxviii. (1896) 619. 
Norru anp SourH Istanps: From the North Cape southwards, not un- 
common in dry rocky places. 
Abundant in Australia, and also found in New Caledonia and the Isle of 
Pines. 
14, PELLAA, Link. 
Rhizome usually creeping. Fronds tufted, or scattered along 
she rhizome, simply pinnate in the New Zealand species, 2—3-pin- 
nate and often palmate or pedate in others; texture subcoriaceous 
or membranous ; veins always free but often obscure. Sori mar- 
ginal, in an early stage distinct and oblong or linear-oblong, de- 
current along the tips of the veins, but soon becoming confluent 
and forming a continuous broad or narrow marginal band. In- 
dusium formed of the modified edge of the frond, continuous, often 
very narrow, at first involute over the sori, ultimately spreading, 
often hidden by the ripe sporangia. Sporangia stalked, with an in- 
complete vertical ring, bursting transversely. 
About 60 species are known, found in the temperate and tropical regions of 
both hemispheres. One of the two New Zealand species extends as far north 
as India, the other is said to occur in Australia. 
Erect. Pinnz ?-2in. long, lanceolate to linear-oblong .. 1. P. falcata. 
Often decumbent. Pinnz 4-?in. long, oblong to orbicular 2. P. rotundifolia. 
1. P. faleata, Fée Gen. Fil. 129.—Rhizome stout, creeping, 
scaly. Stipes 3-6in. long, strong, erect, dark red-brown or almost 
black, more or less hispid with spreading scales. Fronds 12-18 in. 
long or more, 14-3 in. broad, linear or linear-oblong, simply pinnate ; 
rhachis densely scaly and bristly. Pinnez 15-40 on a side, quite 
entire, alternate, shortly petiolate or the upper sessile, 3-2 in. long, 
11 in. broad, lanceolate or oblong-lanceolate to linear-oblong, often 
slightly faleate, acute or mucronate, truncate or cuneate at the 
base, the lower ones slightly auriculate on the upper margin 
near the base; texture coriaceous; both surfaces glabrous 
or nearly so; veins not visible. Sori usually forming a broad 
continuous marginal band all round the pinne. Indusium 
very narrow, membranous, continuous.—Hook. Sp. Fil. ii. 135, 
t. 1llp; Hook. f. Handb. N.Z. Fl. 363; Hook. and Bak. Syn. 
