234< Australian and Tasma^iian Umbelliferous Plants. 



inserted as Oschatzia, since the Hookerian appellation was 

 pre-employed by Boissier for the distinction of a new oriental 

 umbellate. 



During the botanical exploration of the colonies of South 

 Australia and Victoria^ (from 1847 till 1855), it fell to the 

 share of the author of this memoir to disclose new forms 

 of Hydrocotyle, Didiscus, and Bimeto^ia, to point out the 

 range of the Tasmanian genera Dicho^etalum, Oschatzia and 

 Biplaspis, as far as the alps of the Australian continent ; 

 and also the occurrence here of Pozoa, Seseli and Acip/ii/lla, 

 the latter combinable with Gingidium, both established 

 simultaneously in Forster's Characteres Generiim Plantarum 

 as early as 1775. Definitions of the last mentioned species 

 are partly given in the 25th volume of the Litmcea, and 

 partly in the Transactions of the Philosophical Society of 

 Victoria, or of those of the Victorian Institute. Dr. Joseph 

 Hooker refers the genus Pozoopsis of the Icones plantarum, 

 as a second species, to Piplaspis, in his Flora of Tasmania, 

 and states the approximate number of Australian Umhelli- 

 fera as 120, from which remark it appears that several 

 plants of this order continued undescribed, although existing 

 in herbaria ; and, indeed, several unknown to botanists are 

 mentioned in the works of travellers. Thus, AUan Cunning- 

 ham speaks of a North-west Australian Azorella in the 

 appendix to King's Inter-tropical Survey of Australia as being 

 " remarkable for its gigantic herbaceous growth.'' 



The last expedition through the intra-tropical zone of this 

 country, so ably conducted by Mr. Augustus Gregory, has 

 but furnished a limited number of plants belonging to 

 t(,mhellat(2 ; yet, perhaps, even more than might have been 

 expected from the known geographical distribution of this 

 order. As new, I may mention a Jlydrocotyle, two Ihyngia, 

 four Didisci, and a genus which may be distinguished (as 



