THE FERN WORLD OF AUSTRALIA. 
63 
entire, coriaceous, linear or oblanceolate, various as to size from one 
to six inches long, contracted into a short stipes. Veins diverging 
from the costa, one or more forked, free, but concealed by the thick 
texture of the frond. Sori oblong or linear, oblique and parallel in 
a single row on each side of the costa, when old often confluent 
and covering nearly the whole surface. Mount Lindsay and 
Maroochie in Queensland ; abundant on trees and rocks in N. S. 
Wales, Victoria and Tasmania. 
P. Hookeri, Brackenr. Rhizome shorty ascending. Fronds 
usually two to four inches but said at times to reach eight inches 
long, coriaceous entire linear or lanceolate, tapering into a very 
short stipes and always fringed and sprinkled with long spreading 
dark colored hairs. Veins simple or rather more divided than in 
the last. Sori orbicular, oval or shortly oblong, rather large, in a 
single row on each side of the costa. Found on the wet rocks of 
Trinity Bay, Rockingham Bay Ranges, Queensland; and Lord 
Howe's Island, in N. S. Wales. 
P. blechnoides, Hook. Rhizome stout, clothed with dense 
linear scales. Fronds two to four inches long, coriaceous, deeply 
pinnatifid. Segments lanceolate almost reaching to the rhachis, 
but dilated and shortly confluent at the base, the larger ones in the 
middle of the frond three to five lines long, the lower ones shorter 
and broader, contracted into a short narrowly winged stipes. Veins 
pinnate in each lobe. Sori at the end of the veinlets, orbicular, 
three to five pairs in each lobe, forming two rows nearer to the 
margin then to the midrib. Queensland, Rockingham Bay. 
P. grammitidis, R. Br. Rhizome short, scaly. Fronds four to 
eight inches long (much longer in New Zealand), coriaceous, once 
or twice pinnatifid. Primary segments linear or narrow-lanceolate, 
reaching almost to the rhachis but more or less decurrent and 
confluent, the longer ones in the middle of the frond one to one and 
a half inch long, pinnatifid with the lobes mostly very short and 
obtuse, but occasionally some of them linear and three to four lines 
long, the lower primary segments often shortly linear and entire, 
the lowest decurrent on the stipes, rarely almost all the segments 
linear and entire. Veins pinnate in the linear segments, almost 
simple in the short lobes. Sori orbicular or oval, varying from one 
to four according to the length of the lobe. Victoria ; Fern-tree 
Gullies, Dandenong Ranges ; abundant also in Tasmania, often 
forming matted patches on damp rocks. 
P. tenellum, Forst. Rhizome long, creeping over rocks and up 
the stems of scrub trees to a good height by means of adventitious 
roots like ivy, the young part clothed with scales. Fronds distant 
or clustered six to twenty-four inches long, glabrous, simply pinnate, 
the stipes articulated to the rhizome. Pinnae shortly petiolulate 
and articulate on the rhachis, lanceolate, acuminate, often falcate, 
undulate-crenate, unequal at the base, two to four inches long, 
membranous. Veins pinnate with forked branches, one fork bearing 
the sorus, the other again forked. Sori orbicular, small or large, 
