744 CXLYII. FILICES. 
Secr, IV. Diplasium.— Sori linear along veins pinnately diverging from a central 
vein to each lobe of the pinnule. Indusium narrow, opening, in the same frond, on the one 
i the other or both sides of the nerve. 
Fronds pinnate iis pinnatifid pinn 
Rhizome creeping. Pinne Joniy, a the lower 
lobes often divided to the midrib 16. A. japonicum. 
7 Rhizome sh xs x thick. Pinne pinnatifid with dio 
broa 17. A. sylvaticum. 
sss large, cree E RS Trunk erect or shortly arbo- 
P of the PIDE pinnae most broad and short. 
Sori indusia narrow-lin 18. 4. maximum. 
Lobes of. ihe secondary de mostly triangular 
or lanceolate. Sori and indusia short 
long . . . 19. A. polypodioides, 
Lobes of the secondary pinnæ æ oblong or lanceolate. 
Sori and indusia dark-coloured À mostly reaching 
gin 3 ks 0. A. melanochlamys. 
num.— Sori and indusia of Diplasium vom the lateral veiulets 
of sate set Lee y p aes with those of the adjoining set 
Fronds large, pue ix tional t 6 to 12 in. ja 1 to 
1} in. broad . 21, A. decussatum. 
Secr. I. EvasPLENIUM.—-Sori linear, diverging from the midrib or 
from Eos petiole towards the margin, the indusium opening from t the 
upper or inner edge outwards. 
road. Vei 
parallel, simple or forked, eaa at the end in an eaa 
liue.. Sori along the upper or inner side of nearly all the veins, mostly 
reaching from the midrib to Ł or nearly 4 of their length.— Bot. Mag. 
t. 3101; R. Br. Prod. 150; F. Muell. Fragm. v. 130; A. Musirolait m 
Hook. Filic. ee t. 88; Thamnopteris nidus, Presl; Bedd. Fern 
Brit. Ind. t. 197, 
Queensland. Broad Sound, R. Brown aa k Peninsula, N. Taylor ; Rockingham 
Bay, Dellen.: ; Daintree River, Fitzalan ; Bonin Bay, F. Muelier ; Rockhampton 
and neighbouring NET. Bowman, Thozet and others. 
aa ales ackson, Wen s; Hastings -n Beckler ; Clarence 
River, | Wilcox ; Richmond River, Mrs. Ho odgkinson ; ea a, Johnson ; Twotold 
Bay, F. Mue ller ; Lord Howe's Island, C. Moore, Fullaga 
Widely spread over tropical Asia, —— to the Mascarene Islands on the one 
hand and to the Pacific Islands on n tha o 
. A. simplicifrons, F. eil. Fragm. v. 74.—Rhizome scaly. 
Fronds entire, membranous, 1 to eis ft long, $ to 14 in. broad, tapering 
to a point and decurrent on the short stipes. Veins transverse, simple 
