718 CXLVII. FILICES. [Fittaria. 
Opening from the outer margin inwards as an inner valve, the margin of 
h 
the frond recurved over the sorus forming the outer valve, the sorus thus 
Tobom embedded in a double margin of the frond. 
The genus is limited t very few species dispersed over the tropical regions 
of the globe, the only celica one extending over tropical Asia, Africa and the 
Pacific ds. 
1. V. elongata, Swartz ; Hook. and Bak. Syn. Filic. 395.—Rhizome 
creeping, covered with black or purple hairlike scaies. Fronds var ne 
from 2 or 3 in. to 2 ft. in length, 1 to 2 lines broad when fertile, 2 
to 5 lines when barren, acute obtuse or truncate at the end, gradually 
tapering into a short stipes, of a rather coriaceous texture.  Veins 
very snare, potra almost parallel with the midrib and all as well 
as idrib embedded in the substance of the frond. Sori 
code extending nearly the whole length of the fertile fronds. 
—R. Br. Prod. 153; Leurss. in Schen nk and Leurss. Mittheil. 
Bot. i. 90, t. 11; Bedd. Ferns S. Ind. t. 21. 
Queensland. Broad Sound, R. Brown ; Cape York, Daemel; Rockingham Bay, 
Deltech, y: bran River and Mount Elliott, Fitzalan ; Islands off the coast, 
unnin 
S reise: Richmond River, C. Moore ; Macleay River, Fitzgerald. 
21. LINDSÆA, Dryand. 
Rhizome creeping or shortly penean Fronds pinnate or com- 
pound or in species not Australian undiv . Sori in a continuous or 
rarely interrupted Feo under the margin of "the frond, with a continuous 
indusium opening along the upper or outer margin, the margin of the 
frond sometimes slightly dilated and assuming the appearance of an 
upper valve. Veins forked, free or anastomos ie 
A considerable tropical and subtropical genus, erm he New and the Old 
World. Ofthe eleven Australian species five have a wide ver inthe Old World, 
two are New Zealand species, one of them also in yen Caledonia; the four others 
appear endemic. 
Rhizome Gaag Fronds — et rhachis à 
black, wiry. "Pinnules — 1, L. linearis. 
Rhizome short. Fronds tufted, s x innate; rhachis 
slender, Weser mall, distant, oilen bipa rtite . 2. L. dimorpha. 
Rhizome short. Fronds tufted, See: innate. Pinnules 
near together, 3 to 4 lines - 3. L. cultrata. 
Fr 
a creeping. mei Dess and bipinnate. 
in. broad. 
Veins frie, al fe or very rarely anastomosing. . 4. L. Jlabellulata, 
Vei igo es more or defines 
em CHIP ae hs 5. L. lobata. 
ch o sc RR cuneate, equilateral. “Veins free. 
__ Fronds mostly bipinnate, rather rigid. 
