THE AUSTRALIAN NATURALIST. 159 
are bright green or yellowish-green Palmellacexw, alge, 
hence, Sticlina is regarded by earlier lichenologists as a 
distinct genus. 
It will be seen from the above that lichens are a very 
complex group of plants, and as the world’s lichenological 
flora has been divided into forty-seven distinct families, 
and that in Stictacee, which is not by any means the 
largest family, there are upwards of 400 species or sub- 
species and varieties, the study of these lowly plants is 
not very simple. 
In the various works that I have consulted, I have 
been able to ascertain that there are about 175 species 
of this family recorded for Australasia. They are usually 
found on decaying logs or living trunks of trees, or on 
mossy rocks in the deep gullies or gorges of our moun- 
¢ainous country. In New Zealand and Tasmania the tree- 
trunks in the dense forests are usually covered with these 
plants. In the brush eullies of the coastal districts, such 
ag are seen at Bulli Pass and Otford, some fine specimens 
may be collected. A few species may also be found in 
the deep gorge at Waterfall and in some of the deep 
gullies of the National Park. 
A list of the species, showing their distribution in 
Australasia, is being published in the “‘ Australasian Asso- 
ciation for the Advancement of Science’’; parts I. and IT. 
have already. appeared in the journal for May, 1912, p. 
954, and December, 1913, p. 311, respectively. 
NOTES AND COMMENTS. 
Tun Hucantyprs.—The following are remarks by Mr. 
Cheel in connection with his exhibit of capsules of eucalyp- 
-tus:—A complete list of names had been compiled from 
Bentham’s “‘Flora Australiensis,’’. Mueller’s “‘ Hucalypto- 
evaphia,’’ Maiden’s ‘‘Critical Revision,” and Baker and 
Smith’s ‘‘Researches,’’ as well as from papers by various 
workers in the Proc. Linn. Soc., New South Wales, and 
Royal Soc., New South Wales, which amounted to 498 
names, inclusive of those given to forms, varieties, or 
species. This is a formidable list to grapple with, and 
as the list of names is still on the increase, it is a big 
task to be able to identify a given tree or colony of the 
