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at Carlo with spears, boomerangs, blankets, nets, and especially red-coloured cloths, ribbons, and hand- 
kerchiefs, to exchange and barter for large supplies of the drug. On its advent at Roxburgh, the pituri 
may travel partly up the Georgina and partly along the ranges to the Kalkadun, who may supply the 
Mai-takudi with it, but very little gets further eastward. From Boulia it is sent up the Bourke, and so 
through the Yellanga and Kalkadun, again carried to the Mai-takudi, or may be forwarded on to Warenda 
and Tooleybuck. Marion Downs sends it via Springvale, &c., to the (middle) Diamantina, where it may go 
up as far as Elderslie and Winton, very little, if any, ever reaching the Thomson River. It may be stated, 
without fear of contradiction, that the export of the drug from the Mulligan opens the annual market, 
with all its ramifications of trade and barter, for the north-west central districts. 
Following are some localities represented in the National Herbarium, Sydney : 
Queensland. Mulligan River (F. A. Harrington, H. Clarke). The ashes of the 
plant chewed with it are of the " Munteera," a name given by the blacks for hundreds 
of miles round. Evidently the Montera of p. 304. 
New South Wales. In a sheltered position with Eucalypts, in black soil on the 
bank of a permanent flowing creek to the river, in company with Myriogyne, 20 miles 
south of Bourke (L. Abrahams). 
On ridges, 100 yards to the rear of Pulpulla homestead, 50 miles west of Cobar 
in company with Eucalyptus Morrisii and Alstonia constricta (Archdeacon F. E. 
Haviland). 
South Australia. " Poison Bush," " Kooramurro." Sand-hills east of Ooldea 
(Henry Deane). 
Elder Exploring Expedition, Camp 10, 27th June, 1891, approximately in lat. 
27 47', long. 130 60' (R. Helms). 
Western Australia. Comet Vale, 60-70 miles north of Kalgoorlie (J.H.M.). 
Elder Exploring Expedition, Camp 43 (lat. 27 30', long. 126 60'), 6th September, 
1891 (R. Helms). Under date 8th September, in the official journal, is the entry, 
' Two of the young camels sick evidently a poison plant." 
Camp 59 (Camp 58 in the Journal:, 22nd September, 1891. The expedition was 
then near Queen Victoria Spring. 
EXPLANATION OF PLATE 252 "(IN PART). 
H. Flowering twig from 20 miles south of Bourke. . 
I. Bud. 
J. Flower opened out, showing four stamens. 
L. Pistil. 
M. Fruits. 
N. Seed, curved, with a crustaceous rugose testa. 
o. Larger leaf from same plant. 
