11TH DECEMBER.--Thermometer, at 7 A.M., 70 deg.. We continued to travel homewards on the same bearing; thus tracing with our wheels, a direct line of road from Sydney to the northern interior and coast. The plains were gay with the blue flowers of a new CYCLOGYNE[*]; a new CANTHIUM, was in fruit[**]; and we found also a species of Malva, which Sir William Hooker has determined to be MALVA OVATA (Cav.), or scarcely differing from that species, except in the rather soft and short hairs to the calyx (not long and rigid): the two ends of the curved carpels are equal or blunt; but in M. OVATA the upper one is longer and attenuated into a short beak. The same plant was found by Frazer along the Brisbane. The THYSANOTUS ELATIOR was again found here; and a shrubby CRUCIFEROUS plant, quite woody at the base, with very narrow linear setaceous pinnatifid leaves,[***] and linear curved torulose silicules. A new HAKEA with stout needle like leaves, was also found this day in the scrub. We met with no impediment for eighteen miles, when I encamped, although without reaching water enough for our cattle. I knew we could not expect to meet with any watercourse between the Barwan and the Gwydir; which latter river I wished to cross as soon as possible, in hopes then to meet with roads and inhabitants. Even cattle-tracks had again become rare in this intermediate ground, although the grass was in its best state, and most exuberant abundance. We crossed much open plain, and passed through several shady forests of casuarina. A curious provision of nature for the distribution of the seeds of a parasitical plant was observed here, each seed being enclosed within a sort of pulp, like bird-lime, insoluble in water; the whole resembling a very thin-skinned berry. On this being broken, probably by birds, the bird-lime is apt to attach the seed to trees or branches, and so the parasitical growth commences. On the plains, the blue flowers of a large variety of MORGANIA GLABRA caught the eye: the rare and little known HETERODENDRON OLOEFOLIUM of Desfontaines, a genus referred to Soapworts by Mr. Planchon. We found also this day, a new POLYMERIA with erect stems, silky leaves, and pink flowers.[****] Height above the sea, 554 feet. [* C. SWAINSONIOIDES (Benth. MS.); foliolis 8-11 anguste oblongis, racemis laxis dissitifloris, carina spiraliter contorta.--Habit of a SWAINSONIA or LESSERTIA. Flowers blue, as in the original Swan river species (C. CANESCENS). That has not a spirally-twisted keel, but the structure is indicated both by the circinnate apex of the style, and by a slight curl at the summit of the keel.] [** C. OLEIFOLIUM (Hook. MS.); foliis obovato-oblongis obtusis glaucis basi in petiolum gracilem attenuatis, stipulis parvis acutis, fructibus didymis.]