696 CXLVII. FILICES. [ Ceratopteris. 
tertiary pinnz short, with few distinct linear segments 2 to above 
lin. long, the re volute margins enclosing the facti cation the whole 
leneth. Barren fronds distinct, shorter and more spreading, with 
fewer short broad variously shaped segments, flat and of a soft half 
succulent texture. Spore-cases in the Australian specim dee with a 
broad nearly somplete ring as figured a oe Ferns S. Ind. t. 
g ^. 
Queensland. Cape York, Daemel ; Cape York Peninsula, N. Taylor ; Rocking- 
ham Bay, Dallachy ; Rocki phan fas neighbouring districts, Bovina o Shanesy ; ; 
Moreton Bay, F. Mueller, 
9. PLATYZOMA, R. Br. 
Frondstufted on a horizontal oe pinnate, the pinnules small 
and numerous along a simple e to 4 spore-cases, 
terminating simple veinlets dns from the midrib, the soriferous 
end free and incurved between the frond and an inner membrane. 
Mature spore-cases globular, very deciduous, bursting irregularly, the 
inner membrane of the pinnule irregularly torn and disappearing. 
jue genus is limited to the single species endemic in Australia, the great t difference 
ctification as well asin habit appears to me to preclude its union with Gleichenia 
as y plaa by F. Mueller. 
microphyllum, R. Br. Prod. 160. ETE short, ky 
densely. covered with long br etaceous scales. Fronds 6 i 
above | ft. high, the rhachis smooth and shining. Pinne o 
" aii — £ Carpentas aria, R. Brown, Gulliver; Arnhem Lm 
Fitamaurice River and iian e Hil, F. Mueller; Glenelg River, N. W. Coas 
Brown, W. Hill; York Peninsula, Taylor ; 
4 Facing Island, R 5 
ham c amet Downs of the interior, Mitehell, Woolls, Bire 
-Bowman and oth 
TRA Ata easy in ge» = omg — to find the e perfect sori in situ, for when ripe m 
sie E panis and the inner membrane which confin 
heit pera up or vibes 
10. GLEICHENIA, Sm. 
Fronds from a i tnde erect or mene ie main 
rhachis Soon yery numerous entire or pinnatifid innules, 
