THE FERN WORLD OF AUSTRALIA. 
29 
tree ferns at the Clarence River and other places in N. S. Wales, 
the Dandenong Ranges and Victoria, and also many places in 
Tasmania. 
T. javanicnm, Blume. Rhizome creeping. Fronds lanceolate 
in outline often falcate, three to four inches long, pinnate. Pin- 
nules numerous crowded along the rhachis, lanceolate-falcate, 
shortly stipitate, about half inch long^ of a thicker consistence and 
darker color than most Species, penniveined, the oblique simple or 
forked, veinlets mostly produced into short setaceous teeth beyond 
the margin. Indusia few, along the inner margin below the middle, 
wholly exserted, narrow-oblong, with a small spreading border. 
Receptacle exserted. Found at the Daintree River, Queensland, 
so far as at present known its only Australian habitat. 
T. rigidum, Sw. Rhizome erect short thick, stipites tufted 
dark rough, harsh to the touch. Fronds ovate-lanceolate or nearly 
triangular in outline three to six inches long, one and a half to 
three inches broad at the base, dark and almost coriaceous, bi- 
pinnate, with deeply pinnatifid lanceolate pinnules and linear 
dentate segments, the primary and secondary rhachis winged only 
towards the end. Indusia very abundant standing in an oblique 
line from the frond to which they give a bristly appearance, embedded 
in the lower inner teeth or lobes of the tertiary segment, or some- 
times wholly free without any winged margins, narrow, with a small 
spreading entire border. Receptacle exserted. This small dark 
tufted fern, is one of frequent occurrence near the water's edge of 
mountain streams in tropical Queensland, also in Southern Queens- 
land and N. S. Wales at the Maeleay River, &c. 
T. pyxidiferum, Linn. Rhizome filiform densely matted. Fronds 
on filiform stipites, seldom more than three inches long, ovate or 
oblong in outline pinnate. Pinna? ovate, deeply pinnatifid or 
bi-pinnatifid, the lower ones usually distinct, the upper ones con- 
nected by a winged rhachis ; lobes few, linear, one nerved. Indusia 
occupying nearly the whole of short lateral lobes, often several to 
each pinnule, oblong, with a broad mouth. Receptacle either very 
long or scarcely exserted. Tropical Queensland, forming large 
moss-like patches on wet rocks. 
T. caudatum, Brack. Rhizome creeping, rigid, rather stout. 
Fronds narrow, thin, three to eight inches long, pinnate with pin- 
natifid pinnge or bi-pinnate with pinnatifid pinnules, the ultimate 
segment linear, one-nerved, the upper confluent ones short and rather 
distinct, giving the pinnules an acuminate aspect. Indusia half 
immersed in the short lower inner lobes of the pinnules or segments, 
shortly oblong, with a narrow spreading border. Receptacle 
exserted. Found at the Tweed River, Ilkiwarra, and several other 
places in N. S. Wales. 
T. apiifolium, Presl. Rhizome thick and knotty. Stipes short 
or long hispid at the base with spreading bristles. Fronds broadly 
ovatg-lanceolate in outline four to eight inches long bi-pinnate with 
deeply bi-pinnatifid pinnules. Primary pinnules one to two inches 
