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. 



Zygophylle^, 

 9. Tribuhis acanthococcus. 



Prostrate ; leaves longer than the peduncules^ with generally 

 five or six pairs of leaflets^ which are oblique^ ovate-lanceolate, 

 approximate and in size almost equal to each other^ suhsessiie, 

 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^ Avhich are in the middle bispinose, on the back 

 crested and hairy, at the commissure lacunosc, and are 

 destitute of a wing. 



On the sandy, loamy, arid plains along the Murray and 

 MmTumbidgee, 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. 



DIOSME^. 



Asterolasia, 



A new genus of Diosmeae. Flowers hermaphrodite, solitary 

 sessile. Sepals 5, petaloid. Petals 5, membraneous, diminute 

 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, Avith two gemmulae, 

 affixed to the central angle. Carpels five, tomentose, one-seeded. 

 Seeds, strophiolatc. 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- 

 rilsena and Geleznowia. It differs from the former in its in- 

 florescence, smooth filaments, basifixed anthers, and smallness or 

 absence of petals. Through the last character it approaches to 

 Geleznowia ; but the stigma of the latter is undivided orbicu- 

 lar ; and this character is supported by a habitus extremely 

 alienate. 



Two species have been hitherto discovered. 



