317 
The generally paired much longer peduncles distinguish A. sentis at once, even in its exstipular 
state, from the figure of A. decora furnished in Reichenbach's Iconographia, Bot. Exotic tab. 199, to which 
species it has been referred, though not quite without doubt, by Bentham in the Linnoea and in the Proceed- 
ings of the Linnean Society. It appears , however, more likely that the true A. decora is neither 
an inland nor a desert species. In the plant from Liverpool Plains, briefly characterised in Hook. Land. 
Journ. is A. decora, the young pods are noted as linear. Reichenbach's figure represents, moreover, ovate- 
spatulate, therefore much broader, sepals, and these not very conspicuously bearded, and fewer stamens ; 
the very important carpological characters by which A. sentis may at once be recognised from all known 
species of this, the most extensive of all Australian genera, having remained unknown to Bentham and 
Reichenbach. 
A. decora has long been recognised as a distinct species. It is figured and 
described in Part XLV of the present work, and the general similarity of some northern 
New South Wales specimens and those of A. sentis has been gone into. 
It is described by Bentham as follows : 
A divaricately -branched rigid shrub or small tree, branchlets nearly terete, glabrous or pubescent 
when young. Phyllodia lanceolate-oblong or linear, mostly oblique falcate or curved, one-nerved and 
more or less penniveined, in some specimens f inch long and 2 or 3 lines broad, in others more than 2 inches 
long and about 1 line broad, usually glabrous, the marginal gland near the base or none. Stipules either 
subulate-spinescent or very small or none. Peduncles rather slender, solitary or in pairs, axillary or by 
the abortion of the phyllodia in terminal racemes, bearing each a small globular head of twenty to thirty 
flowers, mostly 5-merous. Sepals linear spathulate, free. Petals smooth. Pod thin, flat, 1 to f inch 
broad. Seeds broadly ovate, longitudinal, along the centre of the pod; funicle transverse, gradually 
thickened from the base upwards, straight or shortly folded under the seed. ' 
Botanical Name. Acacia, already explained (see Part XV, p. 104); sentis, 
Latin, a briar or bramble or thorn. Often the plant is very prickly, but not 
invariably so. 
Vernacular Names." Thorny Wattle," " Prickly Wattle." 
Aboriginal Names. " Kalyoo " of the aborigines of Mount Lyndhurst, S.A. 
(Max Koch). (The seed is Kalyoo-thandra, according to the same observer.) It is 
one of the Wattles known as Gundabloui. 
Leaves. Good fodder, especially for camels. Mount Lyndhurst, S.A. (Max 
Koch). Mueller had already drawn attention to the partiality of Hewitt's 
" dromedaries " for the foliage. 
Fruits.. Blacks eat the seed at Mount Lyndhurst, S.A. (Max Koch). This 
is also the case at Mount Narryer, Murchison district, W.A. (Isaac Tyson), where sheep 
are also fond of the seeds. Apparently the pods are eaten. 
Bark. A specimen of a dirty-grey, scaly bark, f of an inch thick, from Ivanhoe, 
N.S.W., yielded me 18-02 per cent, of extract, and tannic acid 6-32 per cent. (Proc. 
R.S. N.S.W., 1887, p. 29). A second sample from Cobham Lake, Milparinka, N.S.W., 
was analysed by me, August, 1 888. ( Ib. , 1 888, 268. ) Tree, height 1 5 to 20 feet, diameter 
4 to 6 inches; collected August, 1887. It yielded tannic acid 10-26 per cent., extract 
33-82 per cent. This bark would scarcely be taken for the product of a dry-country 
D 
