18 
THE FERN WORLD OF AUSTRALIA. 
Eight-mile Plains, Moreton Bay, Maroochie, Rockingham Bay 
and also in several parts of N. S. Wales, Victoria and Tasmania. 
Cyathea Lindseyana. A tree fern of Mount Lindsey, said to 
have a trunk twelve feet high, four inches in diameter. 
Cyathea arachnoidea. A tree fern of Rockingham Bay, said 
to form a trunk nearly twenty-one feet high. Few specimens seem 
to have been gathered of these two ferns and they are not known 
in cultivation. 
Alsophila Rebeccse. This is a very handsome tree with a 
rather slender trunk of about ten feet in height, often forming a 
mass of short stems at its base ; leaves long and broad, of a rich 
dark green color. Found in close gullies, Rockingham Bay, Port 
Denison, Daintree River of tropical Queensland. Small plants 
of this kind under cultivation often produce fertile leaves which 
are also at times simply pinnate. 
Alsophila australis- Trunk twenty feet high, stout leaves 
large spreading covered with scales while young. The commonest 
tree fern of Queensland, found both south and north ; abundant 
also in N. S. Wales, Victoria and Tasmania. This fern is rather 
variable and on that account has been by some separated into 
several species. 
Alsophila Leichhardtana. A tall rather slender stem tree fern, 
very dark and rough, leaves large and spreading, the stalks very 
rough. Abundant at Maroochie, Queensland, and several places in 
N. S. Wales.- 
Alsophila j,Robertsiana. A very distinct tree fern of Rocking- 
ham Bay, and Bellenden Ker Ranges. Stem about eight or ten 
feet high, leaves large and hairy. 
Dioksonia antarctica. A tall tree fern, said to be at times 
fifty feet in height, stem very thick ; leaves large broad harsh. 
Found in southern Queensland, N. S. Wales, Victoria, South 
Australia and Tasmania. 
Dicksonia Youngiae. A handsome tree fern, height about ten 
feet, leaves large glossy, the stalks at the bottom thickly covered 
with long brown hairs. Bellenden Ker in Queensland, several 
places of N. S. Wales. Some fragmentary specimens received from 
the Bunya Mountains appear to belong to this species. 
_ Asplenium polypodioides often forms a trunk six or more feet 
high in the swamps of tropical Queensland, and might thus with 
propriety be placed among tree ferns as well as where it will be 
found with swamp kinds. 
