88 
Sept., 1924- 
The Queensland Naturalist. 
Cakile maritima. Sesuvium portulaeaslrum, Tetragonia 
expansa (New Zealand S])inaeh ) , Mestnnht'yanthemum 
aequilaterale (Pi.ii: Face). Hcaevola suaveolens, and two 
spnr^-'es Euphorbia atoto and E. ereinophila. 
Other plants seen ^rowin^’ on the beach were:^ — Oxalis 
cornit'ulata (Wood-sorrel), Sonchus maritimus, Wedelia 
bifiora. and Salsola Kali. 
(2) Brackish Swamp off the Coast. — In a small brack- 
ish swamp off the coast were seen a few trees of the 
AVhite Mau^^rove (Avicenna officinalis), the only man- 
jrroves observed alon^: the coast; ait the southern end of 
the island. T believe more are to be found, 1'he other 
plants pTowin^' in the swamp were: — Eclipta alba, (’rinum 
peduuculat um, Juncus maritimus (Maritime Kush), Scir- 
pus nodosus, Fiinbristylis ferru^inea, Paspalum idtorale. 
and Sporobohis virji'inicus. Twining- round the Juncus 
were Vi^aia luteola and Vincetoxiciun carnosum. 
(3) Fresh Water Swamps. — J^yin^ close in from the 
beach are very larji:e fresh-water swamps. The outstand- 
ing' tree of these swamps is the common Paper-barked or 
Jiroad-leaved Tea Tree (Melaleuca leueadendi'ou var. 
viridiflora). Wherever the tea tree ^rew the n-round was 
covered with the Bun^'wall Fern (Blechnum cartilagin- 
eum). Other ferns ])resent were the so-called Flimbin^ 
Maidenhair (ijy^’odiuni scandens), and the small Lind 
saea eiisifolia. In some parts the tea. tree is di.slpaced by 
the Swamp Oak (Fasuarina ^'laiica). Other trees were 
EncaUtiis teretieornis (Queensland Blue Onm) and 
Euealyptus robusta (sometimes ealled Swamj) Mahoo-any). 
The treivs of these coastal swamps have to withstand 
s])ecial conditions very luifa vourahle to ])lant u'rowth, i.e.. 
])eriods of inundation' alteniatiiifi- with those of coinpara- 
tivo dron.u’ht; the water possibly is not very eonji’enial to 
them also, so that they are mostly xerojihytie in habit 
with ton;zh leathery commonly vertically placed leaves; 
some such as the Blue Gum and Tea Tree can adapt them- 
selves I 0 tlie ordinary Australian forest conditions. 
Melastmua malaliathricum is a common shrub of the 
coastal sAvamj): it is known to Queensland children as 
“Blue Tono-ue.” as the fruits when chewed stain the 
month a hluish-hlack all oA'er. A few i>lants ot the larj^e 
swamp orchid Phaiius o-i^andifolius were seen, and from a 
lau'oon at the northern end of the island one of onr par1^ 
brouMd back to the camp a few flowers of the Bine 
Water Lily (Nymphaea g-ijrautea). In the wetter parts 
where the water was more ]’)ermanent Triglochin proeera. 
