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Mactgeay Memoria Vouume. 
NOTES ON AN UNDESCRIBED ACAC/A FROM NEW SOUTH 
WALES. 
By Baron von Mueuurer, K.C.M.G., M. & Pu.D., LL.D., F.R.S. 
(Plate xxvim.) 
‘ 
Acacta MAaIpEenm. 
Arborescent; branchlets somewhat angular towards the summit; phyllodes 
large, of chartaceous texture, lanceolar-faleate, gradually narrowed into the petiole, 
very closely striolated by fine longitudinal venules with some few of these more 
prominent, almost glabrous or slightly greyish from hardly visible hairlets ; marginal 
glandule near the anterior base of the phyllode, inconspicuous ; spikes almost sessile, 
solitary or two or three together, their rachis tomentellous ; bracts inconspicuous ; 
calyces broader than long, much shorter than their corolla, short-lobed, subtle- 
pubescent ; corolla almost glabrous, deeply cleft into usually 4 lobes, not streaked ; 
fruit narrow, considerably compressed, much twisted, outside beset with minute 
hairlets ; seeds placed longitudinally, ovate-ellipsoid, shining-black, their aureole on 
each side large ; funicle pale reddish, completely or extensively encircling the seeds, 
suddenly doubled back from the summit, folded at the lower side. 
Near the Richmond River, (Mrs. Hodgkinson, W. Biiuerlen) ; Mooloolah River, 
(Eaves). 
A tree to 50 feet high, with a stem-diameter of 14 feet. 
To the sagacity and circumspectness of Mr. J. H. Maiden it is due, that this 
Acacia became recognised as a species distinct from A. glaucescens, for which 
previously it had been passed. It is, however, clearly different in carpic charac- 
teristics particularly, inasmuch as the fruit of the genuine A. glaucescens is straight 
and still more compressed, the seeds are longer, but proportionately narrower, the 
funicle is almost colourless, and stretching only to the lower portion of the seed, 
there forming an arillar fold. Moreover, in 4. glaucescens the phyllodes are less 
destitute of hairlets—an original specimen of Sieber’s A. czxevascens, available here 
to me, being very instructive in this respect, and so an authentic specimen of 
Wendland’s A. homomalla ;—further the calyx is more decidedly velutinous, and the 
