134 CONTRIBUTIONS TO THE 
A much greater influence than that of elevation above the sea-level, 
is exercised by the neighbourhood of man, especially that of a cattle- 
dealing population. Annual plants seem to be among the first to yield 
before the foreign influx. I was informed of a pretty flower, from the 
description probably an Argyrophanes, which had formerly covered . 
whole plains of the upper district of the Oncaparinga, and had now 
entirely disappeared, The Anthistiria, which in the hilly lands formed 
pastures, is now supplanted in many places by new grasses; the ori- 
ginal vegetation of the more cultivable Scrub-districts, in the neighbour- 
hood of the town, lurks timidly and secretly about the hedges which 
separate it from the reclaimed districts, and views with terror the de- 
structive progress of the merciless intruders. 
The Australian Flora has been but little enriched by any European 
plants, except cultivated ones.. We find, indeed, here many that are 
identical with European plants, but the native home of most of them is 
a very critical point; while the Australian burgher-right of others is 
beyond all doubt. As might naturally be expected, my researches 
upon this point have not led to any certain results; the following 
plants, however, appear to me unquestionable immigrants, viz., Lolium 
temulentum, Centaurea Cyanus (rare), Capsella Bursa. 
Contributions to the Botany of WESTERN INDIA ; 
by N. A. DALZELL, Esq., M.A. 
(Continued from p. 124.) 
Nat. Ord. URTICEA. 
PouzoLzia. 
. P. integrifolia ; suffruticosa 3—4-pedalis, radice crassa, caule compresso 
utrinque linea pilosa instructo, foliis oppositis sessilibus e basi cor- 
data lanceolato-acuminatis 3-nerviis integris supra et in nervis subtus 
pubescentibus 3—4 poll. longis, floribus masculis et fœmineis in 
foliorum axillis glomeratis breve pedicellatis, pedicellis apice articu- 
latis, floribus masculis plurimis foemineis paucis, perianthio masculino 
4-partito, filamentis complanatis, fæmineo fructifero bi- interdum 
trialato inter alas 8—-10-costato, alis ciliatis, involucro oligophyllo 
membranaceo, 
