Gleichenia.] CXLVIT. FILICES. 697 
xus along the ultimate branches and often also below the last 
orks. Sori without indusium, of few (2 to 12) spore-cases attache 
b one binh of forked veinlets, either superficial or slightly embedded 
in the substance of the frond. Spore-cases surrounded by a transverse 
=e and opening vertically in 2 valves. 
e genus is spread over the tropical an subtropical pkio of the New and the 
"TE World, extending into cooler regions in the southern hemisphere. Of the four 
Australian species one is aiy dist tsibutod ó ver the ar of the genus, the three 
others extend to New Zealand and New Caledonia, Mud. ‘two of them also into 
the Malayan Archipelago. 
Pinnules divided to the na into numerous small segments, 
cases usually 3 or 4, has “the e upper inner angle . . 1. G. circinata. 
Segments bullate, the recurved margins almost closed over 
to therhachis. Spore-cases s usualy 2,ina bo more ; 
than half the breadth of the segmen 2. G. dicarpa. 
Pinnules green oth sides, continued on rus aaa 
a boi rhachis tase. the last fork. Sori of 3 or 4 
3. G. flabellata. 
Pianos Plows underneath, only on the last branches. of 
the rhachis above the last fork. Suri of 8 o 
Spore-cases . . 4. G. dichotoma. 
1. G. 
short, but: rpg “repeatedly ae and. scrambling to the height 
of many feet, the main rhachis glabrous or eet y scaly-hirsute. 
imate bra 
lines diameter, adnate by the broad base, often whitish 
underneath, flat or the margins | more o r less recurved or revolute. 
; @. DA lla rhachis. hirsute) R. Rr. Prod. 161; Hook. f. FL 
Tasm. ii. 130 ; a eom, Labill. Sert. Austr. Caled. t. 11; Bedd. 
Ferns Brit. Ind. t. 177; G. rupestris, (margins of segments recurved), 
R. 2 Prod. LM. 
Upper Victoria River, F. Mueller. 
Queensiand Moreton Bay, F. Muel'er 
. S. Wales. Port Jackson to the "Blue Moun Brown, Woolls and 
others ; Sok tard to Macleay River, Beckler ; Agree a Wilcoz ; southward 
to Illawarra, Johnson. 
ctoria. Fro 
c; F. Mueller. 
Tasmania. King's Island, R. Brown ; common in loose forest land, J. D. Hooker 
m the Grampians, Sullivan, and Portland, Allitt, to Upper Gipps’ 
and others. 
S. Australia, Mount Lofty Ranges, F. Mueller. 
Also in New Zealand, New Caledonia and the Malayan Archipelago and 
Peninsula, 
