138 R. H. CAMBAGE. 
oblong-acuminate, mucronate, 2—3 mm. long, 1 to 2 mm.. 
broad; rachis 2 to 4 mm., with terminal seta. 
Nos. 3 and 4. The latter may bea phyllode, or both may 
be abruptly bipinnate, petiole 5 to 9 mm., channelled above; 
leaflets two pairs; rachis3 to5 mm.; stipules small, linear. 
Nos. 5 to 10. Obliquely-lanceolate to narrowly triangular, 
rigid, pungent-pointed phyllodes, about 5 to 7 mm. long, 1 
to 1°55 mm. broad, with the midrib. towards the lower 
margin, and with a pronounced angle on the upper edge 
which is channelled below the angle, the channelling 
becoming gradually less in the succeeding phyllodes. 
There appears to be an interesting association between 
the channelling of the petioles of the leaves and of that of 
the upper edge of the phyllodes from the base to the angle, . 
as though the channelled portion of the phyllode may repre-- 
sent the petiole of the earlier leaves.’ 
Several seeds of this species produced twin plants. 
It was noticed that plants of this species growing at 
Mount Victoria favoured the small area of Narrabeen Shale 
formation rather than the more siliceous Hawkesbury 
Sandstone. 
UNINERVES—(Racemosee). 
ACACIA PYCNANTHA Benth. Seeds from Potts’ Hill, Sydney, 
and Melbourne (Cultivated). (Plate III, Numbers 1 
tors). 
Seeds black, oblong, 4to5 mm. long, 2°5 to3 mm. broad, 
1°5 mm. thick. 
Hypocotyl terete, creamy to reddish-brown, 1 to 5 cm.. 
long, 1°5 to 2 mm. thick at base, °7 to 1 mm. at apex. 

1 See a paper by J. J. Fletcher, M.A., B.Sc., “On the correct Interpre- 
tation of the so-called Phyllodes of the Australian Phyllodineous Acacias.” 
Proc. Linn. Soc. N.S.W., xiv, 24, (1920). 

