94 The Queensland Naturalist 
March 1948 
are acid volcanic masses like Mt. Esk, Glen Hock, etc., and 
these are generally considered part of the Tertiary vol- 
canic series of S.E. Queensland, though il has never been 
proved that they are not part of the acid phase of extrus- 
ives in the Esk Series. Horizontal lavas, rhyolites and 
basalts, capping the D’Aguilar and Y arrant an blocks, e.g., 
at Alt. Archer, and falling eastwards front the Bunya Mts., 
are also nsuallv considered Tertiary, though no inter- 
bedded or overlying fossiliferous shales or tuffs have yet 
been found. 
THE VEGETATION OF THE COUNTRY 
SURROUNDING SOMERSET DAM 
(The Botanical Report of the Easter Excursion, 1946) 
By S. T. BLAKE 
The Somerset Dam is situated on the Stanley River, 
about 12 miles from Esk towards Kilcoy. The country 
immediately adjacent to the dam is now chiefly valleys 
and steep, sometimes rugged, mountains, with the alti- 
tude varying from 200 to over 2,000 feet. Originally 
there was a broad valley with some low hills upstream 
from the dam. but this is now flooded. A considerable 
part of the Stanley River basin was studied in 1939, 
prior to the flooding, and a more detailed account of 
the vegetation is to he found in Proc. Roy. Soe. Queens!. 
•12: 62-77 (1941). As a result of further investigation, 
some of the names used in this paper require emendation; 
further species have been recorded from the area, a list 
of which is at the end of the present paper. 
The area recently visited was limited to the banks 
of flu 1 Stanley River close to the dam, and parts of the 
mountains on each side. Along the river below the dam 
there still remains the original Fringing Forest of Cal, 
Us t civ ov cnnniiih.s (red bottle-brush), Eugenia renfevatii 
(river myrtle), Cuxtcniospirmiivi an sir ale (Moretou Bay 
chestnut or black bean), Casuari-na cuvnivghanniana 
(river oak) and T nslu ma laui'ina (a water gum) ; there 
is a ground flora of several grass-like plants, including 
Lomandra longifoliu (sword grass), Microltiena stipoides 
(weeping rice grass), Paspalidiim distant, more or less 
