NOTES ON ACACIA. 273 



circumstances it may be desirable to partly re-describe the 

 species, taking Helms' Ooolgardie specimen for the purpose. 



Phyllodes with one central nerve, finely striate, gland 

 near base, edges resinous and granular. Flowers 5-merous, 

 in short spikes, the peduncle clothed with hair; floral bracts 

 capitate. Oalyx very narrow, spathulate, about half as 

 long as the corolla; with long irregular, transparent 

 processes. Petals glabrous, united about half way down. 

 Pistil very resinous, probably smooth. 



A. heteroneura is quite distinct from A. quaclrimarginea. 

 The phyllodes of the former are almost trigonous, the 

 central nerve is much raised on both sides of the phyllode, 

 and there are three or four fine distinct nerves on each 

 side. Gland near base. The phyllodes of A, quaclrimarginea 

 are flat with a faint central nerve. The nerves on each 

 side are indistinct. The plant appears to be quite glabrous? 

 and the gland is some distance from the base. The pods 

 of A. heteroneura are very narrow, those of A, quaclri- 

 marginea broad, angled and almost winged. 



Mueller (in absence of flowers) was naturally uncertain 

 as to the position of A. quaclrimarginea, and suggested 

 affinities to A. quadrisulcata and A. lineolata. Its position 

 appears to be near A. tarculensis J. M. Black. It differs 

 from that species in the longer and narrower phyllodes, in 

 the single spikes, and in the glabrous pistil (that of A. 

 tarculensis being pubescent). 



Bipinnatae (Pulchellae). 

 XXIII. A. Drewiana W. V. Fitzgerald, n. sp. 



An erect unarmed shrub, invested with white spreading 

 hairs; the branchlets slightly angular; leaves bipinnate, 

 the pinnae in two pairs, the lower at the base of the com- 

 mon petiole, the latter terminating in recurved acute points; 



E— September 5, 1917. 



