54 
THE PERN WORLD OF AUSTRALIA. 
bent or nearly erect, six to over fifteen inches long, simply pinnate, 
often proliferous at the end, the stipes rhachis and commonly the 
principal veins hirsute, or densely shaggy with persistent villose 
patent scales. Pinnse petiolulate, ovate, ovate lanceolate or fan- 
shaped, half to over one inch long, irregularly denticulate and 
sometimes obscurely three-lobed, prominently striate with radiating 
forked veins more or less joining in a midrib. . Sori linear, often 
long but not reaching the midrib. On rocks in the dense scrubs 
from Rockhampton to Cape York Peninsula. 
A. falcatum, Lam. Rhizome densely clothed with dark brown 
scales, shortly creeping, usually growing in the masses formed by 
other epiphytes. Fronds from one to four feet long, or much longer 
in many of the Queensland scrubs, pendulous, sub-coriaceous, 
lanceolate in outline, stipes long, ebeneous, glabrous or sparingly 
scaly-hirsute, simply pinnate. Pinnae shortly petiolulate, obhque, 
lanceolate, accuminate, serrulate, and usually more or less pinnatifid 
with short broad dentate lobes and sometimes auriculate at the base, 
one and a half to four inches long, prominently striate, the veins 
very oblique diverging from the base and from the costule. Sori 
linear, long, and nearly reaching the margin, or a few quite short. 
Found on trees throughout Queensland and N. S. Wales. , 
A. obtusatum, Forst. Rhizome thick, scaly. Fronds four to 
twelve inches high, the rhachis and stipes usually rather thick, gla- 
brous or sparingly scaly. Pinnas coriaceous, shortly petiolulate, in. 
the typical form obliquely oblong or ovate-lanceolate, obtuse, 
three-quarters to one and a half inches long, regularly crenate- 
toothed, and from that in some varieties to lanceolate, three to five • 
inches long, toothed' or pinnatifid, Veins from the midrib oblique 
and forked. Sori oblong-linear, not reaching the margin, usually 
several on each side of the midrib oblique equal and parallel. 
Abundant on maritime rock in Tasmania. 
Var. difforme. Pinn« obtuse, more or less pinnatifid. Tas- 
mania. 
Var. lucidum. Pinna3 obtuse, lanceolate, two to five inches 
long, obtusely serrulate, with very numerous parallel sori. Lord 
Howe's Island, N. S. Wales. 
Var. incisum. Pinnae lanceolate, three to five inches long, 
deeply pinnatifid, with a sorus on each lobe. Lord Howe's Island, 
N. S. Wales. 
A. Hookerianum, Colenso. Rhizome short. Fronds about six 
inches long, slender but rigid, mostly bi-pinnate, the rhachis slightly 
scaly-hairy. Primary pinna3 in the lower part of frond half to one 
inch long, with six to ten distinct oblong-cuneat dentate segments, 
one to two or rarely three lines long, the lower ones tapering to a 
petiolule, the upper ones as well as the upper pinnae small and con- 
fluent. Veins diverging, free. Sori few, usually only one or two on 
each segment, large in proportion. Uncertain if found in N. S. 
Wales. Upper Hume River at an^ elevation of 4,000 feet, and at 
the Colac Ranges in Victoria. 
