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In the open ground grew a beautiful tree producing large terminal spikes of yellow flowers, with broad, and slightly cordate leaves; it belongs to the natural order Bignoniaceae.
The rocky ridges were occupied by the stringy-bark, fine Cypress-pine trees, the stunted silver-leaved Ironbark, a Eucalyptus, with very scanty foliage, orange-coloured blossoms, seed-vessels longitudinally ribbed, and as large as the egg of a fowl; its butt was covered with a lamellar bark, but the upper part and the branches were white and smooth; also by another Eucalyptus, with a scaly butt like the Moreton Bay ash, but with smooth upper trunk and cordate ovate leaves, which was also new to me; we called it the Apple-gum.
A few scattered mangroves, and a leguminous tree, with rough cordate leaves, and large one or two-seeded legumes, were growing on the banks. We were obliged to turn southerly for a short distance, and found what we had fancied to be a river to be only a small creek. We crossed it about twelve or fourteen miles from the sea, but the water was brackish.
I also saw a large tree and obtained specimens of it, belonging to the natural order Bignoniaceae, with terminal spikes of yellow flowers, and rough cordate leaves; and a Proteaceous plant with long compound racemes of white flowers, and deeply cut leaves, resembling a tree with true pinnate leaves. The large-seeded Angophora mentioned by me before, also grew in this district.
Its leaves were nearly cordate, or heart-shaped, and of a very dark-green colour; but that which rendered it most conspicuous among the other trees of the forest was the shining white or silver-coloured bark that covered its trunk, and its numerous slender branches. This bark is only white externally.
The young seedlings are recognizable by the shape of the first two or three leaves, and when more of them are produced, the rosettes become dense and strikingly different from others. Later leaves are more nearly like the parent-type, but the petioles remain short. The bases of the blades are frequently almost cordate, the laminae themselves varying from oblong-ovate to ovate in outline.
SPATANGUS ELONGATUS, pl. 6. f. 2. Body elongate, cordate, with a deep anterior grove and notch; covered above with minute hair-like spines, with scattered very elongated tubular minutely striated spines on the sides; the anterior groves and circumference of the vent with larger equal hair-like spines on each side; the under surface with a triangular disk of similar spines beneath the vent, and with elongated larger tubular spines.
Take the shape of the normal leaves in the first place. These are cordate at their base and mainly inequilateral, but the general shape varies to a considerable extent. This variation is closely related to the position of the leaves on the twigs, and shows distinct indications of complying with the general law of periodicity.
Since the durian is endemic in a very restricted portion of the globe, and since those who have watched the vital process may be comparatively few in number and therefore unlikely to be jaded by the truisms of these pages, a few words in explanation may not be resented. The seed of the durian is roughly cordate, about an inch and a quarter long.
Its leaves were nearly cordate, or heart-shaped, and of a very dark-green colour; but that which rendered it most conspicuous among the other trees of the forest was the shining white or silver-coloured bark that covered its trunk, and its numerous slender branches. This bark is only white externally.
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