92 
The Queensland Naturalist. August, 1935. 
Rhynchospora longiseta : This is one of those species 
which are very common one year and rare other years. 
Last summer an area of half an acre occupied by this 
species in granite or conglomerate country could be found, 
this season (1934-35) very few plants can be found where 
the species was numerous last year. 
Lepidosperma concavum : Not uncommon on high 
granite hills and in Red Ironbark ( Eucalyptus sidero- 
pholia) forest, where it is fairly open. One of the drought- 
resisting members of the family. 
Lepiroma mucronata : Confined to the low flats of the 
coastal peneplain, where it fringes the Tea Tree 
( Melaleuca leucadendron var. mimosoides) waterholes 
several feet deep to the exclusion of other plants. The soils 
of these flats are derived from ancient (Paleozoic) tuffs, 
slates, and porphyries, intermixed with detritrus from con- 
glomerates, ash-like in texture. 
Gahnia aspera : Rather rare, a few plants being found 
on high granite with little shelter, and it is rather curious 
that with the exception of a couple of plants found grow- 
ing with some rain-forest trees and shrubs among angular 
boulders of andesite, the only others of this species seen 
was in the, dense shade of a rain forest. 
Cladium glomeratum : Very rare, only a few plants 
being found on the margin of shallow waterholes in the 
same locality as Lepiroma- mucronata. 
Cladium articulatum : Unlike C. glomeratum , this is 
very numerous on small creeks where the soil is of an 
alkaline nature, especially where some clearing or ring- 
barking of the timber has been done some years previously. 
Scleria- Broumii : Pound on moist soils, but seldom if 
ever in numbers. On granite hills somewhat exposed to 
sheltered slopes on trachyte slate, it is possible to find an 
odd specimen of this. 
Stenophyllus barbatus : Very rare, only an odd plant 
being found growing in sand in creeks where the adjoining 
ridges are of conglomerate and trachyte. 
Cyperus rotundus: This is not common in the Euca- 
lyptus parkland, but is found in numbers growing in rail- 
way ballast, where it appears to have taken a strong hold. 
It may be of interest to note that out of the thirty 
species enumerated, only Cyperus fulvus , C. umbellatus , 
C. gracilis (rarely) and Scleria Brownii ate found on the 
red volcanic loams. 
