130 
No. 173. 
Acacia obtusata, Sieb. 
(Family LEGUMINOSvE : MIMOSE^E.) 
Botanical description.— Genus, Acacia. (See Part XV, p. 103.) 
Botanical description. —Species, A. obtusata, Sieber, in DC. Prodromus, ii, 453 
(1825). 
Following is the original description :— 
A. obtusata (Sieb. l.c.,n. 441). Phyllodiis oblongo cuneatis basi attenuatis obtusis uninerviis medio 
integerrimis eglandulosis coriaceis ramisque glabris, capittdis in racemum pliyllodio breviorem digestis, 
floribus 5-fhlis. Nova-Hollandia. Phyllodia 20 lin. longa, 3-4 lin. lata (v.s. sine fr.). (DC. Prod., 1825, 
2, p. 453.) 
Then a translation of this description appeared as follows :— 
A. obtusata (Sieb. pi. exsicc. Nov. Holt., No. 441). Phyllodia oblong-cuneated, obtuse, attenuated at 
the base, 1-nerved, entire and glandless, coriaceous, and are, as well as the branches, glabrous; heads of 
flowers disposed in racemes, which are shorter than the phyllodia ; flowers 5-cleft. Native of New Holland. 
Phyllodia 20 lines long, and 3-4 lines broad. 
Blunted- leaved Acacia. FI. Ap., Ju. Clt. 1824. Shrub 4 to G feet. 
(Don’s General History Dichlamydeous Plants, vol. ii, p. 406.) 
In the year 1842, Bentham described the species more fully in the following 
words :— 
A. obtusata (Sieb., DC. Prod, ii, 453) glaberrima, ramulis angulatis, phyllodiis oblongo-linearibus 
spathulatisve obtusis vix mucronulatis basi longe angustatis crassis rigidis marginatis versus medium saepe 
glanduliferis uninerviis venis inconspicuis, racemis pliyllodio multo brevioribus oligocephalis, capitulis 
dense multiflor)s, calycibus corollisque crassiusculis, ovario glabro. Species rigida, stricta, subcserulescens. 
Phyllodia 1^-3-pollicaria, 3-5 lin. lata. Capitula in racemo 2-4, floribus ultra 20.—Elevated parts of the 
Blue Mountains, Cunningham, Fraser, Sieber, n. 441. (Hooker’s London Journal of Botany, vol. i, p. 354.) 
In the Flora Australiensis , he described it as follows :— 
A tall shrub, quite glabrous ; branchlets angular. 
Phyllodia oblong-linear or almost spathulate, usually straight, very obtuse, 1| to 3 inches long, 
rigidly coriaceous, 1-nerved, with thickened nerve-like margins, the veinlets inconspicuous, 
with or without marginal glands. 
Racemes short, with few densely-packed heads of above 30 flowers, mostly 5-merous. 
Sepals thick, spathulate, half as long as the corolla, at first united but readily separating when 
fully out. 
Pod unknown. (B.F1. ii, 366.) 
Mr. R. T. Baker, in Proc. Linn. Soc. N.S.TF., xxii, 694 (1897), described 
the pod in the following words :— 
Pod flat, almost always straight, with only the slightest tendency to curve, glabrous, margins 
thickened and parallel, 3 to 4 inches long and 5 lines broad, impress of the seed prominent 
on the outside. Seed oblong, longitudinal, funicle filiform to the one small fold and then 
thickened into a small boat-shaped axil under the seed. 
