THE BOTANY OF WESTERN AUSTRALIA. 121 
The Subtribe of Myrtacee, Leptospermee, produces but few new 
species to the north; among those found are three species of Hypo- 
calymma. A yellow-coloured species, growing from eighteen inches to 
two feet in height, with leaves about an inch long and quarter of an 
inch wide, first makes its appearance on the sand-plains and ironstone 
hills near Dundaragan, and I saw it in abundance in similar situations 
as far to the north as Mount Lesueur; it produces abundance of fine 
yellow flowers in the axils of the leaves. A narrow-leaved plant like 
Hypocalymma angustifolia, but growing sparingly near the Diamond 
Spring, and a white-flowering and robust-growing species, five or six 
feet high, with leaves of the size and form of the broad-leaved yellow 
species, are abundant, but only in one spot, a small valley among the 
hills, about four miles to the north of Dundaragan. A square-capsuled 
opposite-leaved Eucalyptus, not yet seen in flower, grows among the 
hills near Dundaragan; and a beautiful yellow-flowered Ducalyptus 
grows on the limestone hills to the West of the Valley of the Lakes: 
it grows to a tree from twenty to thirty feet high, the leaves resemble 
those of the Red-gum, they are hispid on the young shoots, glabrous on 
the flowering branches, they are always opposite in vigorous growth, 
sometimes alternate on old stunted trees; the cups are of a bright 
scarlet colour, and have a verrucose appearance; when the capsule ex- 
pands in a quadrangular form, the angles carry with them the stamens 
in four divisions ; the seed-vessels are nearly as large as those of the 
Red-gum. The searlet cups, fine yellow flowers, and opposite shining 
leaves of this tree make it one of the finest species of the genus. 
A beautiful species of Dr. Lindley's genus Frema, but departing in 
some degree from the generic character in having flowers borne in 
clusters of four together, of a beautiful scarlet colour, and with buds 
covered with a soft wax-like substance before they expand. A Calo- 
thamnus, with lanceolate leaves, about three inches long and about a 
quarter of an inch wide, bearing bright scarlet flowers, followed by 
verrucose seed-vessels, grows on the sand-plains between Champion 
Bay and Mount Fairfax, and near the road in several places more to 
the south. 
The Natural Order Rutacee, or Rue-family, is not common in the 
country passed over, but I met with two plants which I suppose be- 
long to new genera; one is a small shrub, about two feet high, with 
round hoary leaves about half an inch in diameter ; the flowers have no 
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