15 
According to Treasury reports for 1897, 5,315,902 lb. of this gum, valued at 1,091,892 dollars 
was imported into the United States in the year 1896-97. The crop for 1897-8 is estimated at only 
2,600,000 lb. Under the Wilson Bill the gum was admitted free of duty, but now there is a duty of 
10 cents, per pound. 
Size. —It attains a height of at least 100 feet. Trees 3 feet in diameter are 
not uncommon. “ The largest tree seen at Brisbane Water measured 10 feet 6 
inches in circumference.”—(Macartliur.) 
Habitat. —This is a brush tree, being found in the coastal brushes from the 
Illawarra northward to Rockhampton, Queensland, “and apparently the same 
plant, but in leaf only, Lord Howe’s Island, Milne.”—(B.R1. iv, 282.) This is a 
mistake; there is, however, a Sideroxylon on the island, viz., S. Howeanam, R.v.M. 
(See my paper on the “Vegetation of Lord Howe Island.” Proc. Linn. S'oc. 
N.S.W. , 1899, p. 130.) 
EXPLANATION OF PLATE 42. 
A. Flowering twig. 
b. Flower. 
c. Flower, opened out. 
(а) Corolla-segment. 
(б) Anther. 
(c) “ Scale of the throat,” or rather staminode. 
d. Flower. 
(a) Sepal. 
(i b) Ovary. 
(c)' Stigma. 
e. Section through ovary. 
f. Fruiting twig. 
g. Vertical section of fruit, showing two of the seeds. 
h. Seed. 
(a) Hilum. 
c 
