Acacia. 1 
XLIII. LEGUMINOS^E. 
515 
head, mostly 5-merous.- Calyx short, broadly lobed, ciliate. Petals with slightly 
prominent midribs. Pod usually 8 to 4in. long, about £in. broad or rather more, 
more or less contracted between the seeds. Seeds ovate. — F. v. M. PI. Yict. 
ii. 85 ; Maid, and Camp. FI. PI. N.S.W., No. 13. 
Hab.: Plains of the Condamine, Leichhardt. 
Gum contains 18 6% of arabin and 62% of metarabin. — Lauterer. The bark contains 15'08% 
of tannin. — Staiger. 
Wood tough, firm, and easily worked ; sapwood white, heartwood pinkish. Useful for tool- 
handles, staves, <fec. — Bailey's Cat. Ql. 1 Voods No. 142a. 
a. normalis. Glabrous or the young shoots slightly tomentose-pubescent. Leaflets long and 
narrow, usually 3 to 4 lines ; glands numerous along the primary rhachis. — Mimosa decurrens, 
Wendl. Bot. Beob. 57 ; Vent. Jard. Malm. t. 61 ; A. decurrens , DC. Prod. ii. 470 ; A. angulata, 
Desv. Journ. Bot. 1814, ii. 68 ; DC. Prod. ii. 468; A. sulcipes, Sieb. PI. Exs.; A. adenophora, 
Spreng. Syst. iii. 140. — Bentli. 
b. mollis, Lindl. Bot. Beg. t. 371. Foliage softly tomentose-pubescent, the indumentum 
assuming a golden-yellow tinge on the young shoots. Leaflets 2 to 3 lines long, obtuse ; glands 
numerous along the primary rhachis. — A. mollissima, Willd. Enum. 1053; DC. Prod. ii. 470; 
Sweet, FI. Austr. t. 12 ; Hook. f. FI. Tasm. i. 117. Some of Beckler’s specimens from Warwick 
have the numerous glands of this form with the very small leaflets of the following. — Benth. 
c. paitciglandulosa, F. v. M. Pubescent but not so softly so as in the var. mollis, and some- 
times almost hirsute, with the same golden-yellow tinge on the young shoots. . Leaflets small, 
often under 2 lines ; glands few, often only under the last 1 or 2 pairs of pinna;. — Moreton Bay, 
&c.; also between Archer’s and M'Kenzie’s stations in moist places, Leichhardt. — Benth. Wood 
of a pinkish colour, close-grained, and nicely marked. — Bailey's Cat. Ql. Woods No. 142b. 
118. A. dealbata (white-powdered), Link. Enum. Hart. Berol. 445 ; Benth. 
FI. Austr. ii. 415. A handsome tree, closely resembling the var. mollis of A. 
decurrens, and to be added perhaps to the varieties of that species as proposed by 
F. v. Mueller, but the branches and foliage are very glaucous or hoary with a 
minute pubescence not assuming a golden tinge on the young shoots. Pinnae 
usually 10 to 20 pairs, leaflets 30 to 40 pairs, linear, crowded, 2 to 3 lines long ; 
glands usually numerous. Flower-heads small, in axillary racemes paniculate at 
the ends of branches, as in A. decurrens. Pod broader, not contracted between 
the seeds and more glaucous. — DC. Prod. ii. 470; Lodd. Bot. Cab. t. 1928; 
Hook. f. FI. Tasm. i. Ill ; A. irrorata, Sieb. in Spreng. Syst. iii. 141. 
Hab.: Given as a Queensland species by F. v. M., who probably received specimens from the 
Stanthorpe district. 
This, the Silver Wattle of the southern colonies, is unhesitatingly united with A. decurrens by 
F. v. Mueller ; .1. D. Hooker considers it as sufficiently distinct, although not easy to characterise 
from dried specimens. The shape of the pod is different as far as known, but the specimens of 
the several forms of A. decurrens, from many stations, are in flower only. — Benth. 
Exudes a gum which is the best substitute for arabie gum available from Queensland native 
trees. It contains 81% of arabin. — Lauterer. 
119. A. Arundelliana (after E. H. Arundell), Bail. A tall graceful shrub or 
small tree, the branches often drooping, all the young growdh bristly with brown 
spreading hairs. Leaves oblong in outline, about 3in. long and liin. broad, on 
very short petioles. Pinnae about 18 pairs, lin. long ; leaflets scarcely exceeding 
1 line .long, very narrow, about 30 pairs. Flowers in small globular heads on 
filiform peduncles, in slender racemes, 5 or Gin. long. Calyx and petals rather 
thick, mostly 5-merous. Pod 5in. long, ^in. broad, scarcely contracted between 
the seeds ; funicle expanding into an aril under the seeds. — -A. decurrens var.? 
Leichhardtii, Benth. in Flora Austr. ii. 414. 
Hab.: Bordering the North Coast Eailway about Maroochie and Eumundi. 
Given as a doubtful variety of A. decurrens in the Flora Austr. — A. d. (?) Leichhardtii, under 
which name it could not be kept as a species, there being one so designated. 
Wood of a light colour near the outside, pinkish towards the centre, prettily marked and close- 
grained. — Bailey’s Cat. Ql. Woods. No. 143. 
120. A. leptoclada (slender branches), A. Cunn.; Benth. in Hook. Lond. 
Journ. i. 385, and FI. Austr. ii. 416. A shrub, either glabrous and somewhat 
glaucous or hispid with scattered short stiff hairs. Pinnte 3 to 5 pairs, 3 to 4 
