. 
Australian Plants. 9 
In the barren scrub-country on the Murray and St. 
Vincent Gulf. 
This species agrees in many points with Dod. trigona and 
Dod. aptera. 
ZYGOPHYLLEZ. 
9. Tribulus acanthococcus. 
Prostrate ; leaves longer than the peduncles, with generally 
five or six pairs of leaflets, which are oblique, ovate-lanceolate, 
approximate and in size almost equal to each other, subsessile, 
beneath appressed hairy ; flowers decandrous ; petals obovate, 
exceeding somewhat in length the narrow-oblong sepals; 
anthers ovate; rays of the stigma reflexed, half as long as the 
thick style; fruit depressed, consisting of 5 puberlous, tri- 
seeded carpels, which are in the middle bispinose, on the back 
crested and hairy, at the commissure lacunose, and are 
destitute of a wing. 
On the sandy, loamy, arid plains along the Murray and 
Murrumbidgee, towards their junction. 
Only one Australian species has been previously described 
from this genus, T. Hytrix, R. Br. in Sturt’s exp. into Centr. 
Aust., II, app. p. 69 (T. lanatus, Walp. annal. II, 243,) for 
the discovery of which we are indebted to the enterprising 
Captain Sturt. 
LIOSME A. 
Asterolasia. 
Anew genus of Diosmex. Flowers hermaphrodite, solitary 
sessile. Sepals 5,petaloid. Petals 5, membraneous, diminutive 
or wanting. Stamens 10, hardly exceeding the length of the 
calyx. Filaments alternately shorter. Anthers erect, inap- 
pendiculate, fixed at the base, bilocular, cells bursting longitu- 
dinally. Style simple. Stigma deeply five-cleft, with filiform 
or clavate lobes. Germina five, concrete, with two gemmule, 
affixed to the central angle. Carpels five, tomentose, one- 
seeded Seeds, strophialate. Australian shrubs, resembling — 
Phebalium species, covered with stellate hair, in allusion to 
which the generic name has been formed. 
This splendid genus is exactly intermediate between Cho- 
rilena and Geleznowia. It differs from the former in its in- 
florescence, smooth filaments, basifixed anthers, and smallness 
er absence of petals. Through the last character it approaches 
to Geleznowia; but the stigma of the latter is undivided or- | 
bicular ; and this character is supported by a habitus ex- 
tremely alienate. 
Two species have been hitherto discovered. 
