Australian and Tasmanian Umbelliferotis Plants. 233 



zealous investigations of the Tasmanian Flora enabled Dr. 

 Joseph Hooker to elucidate with his usual skill the new 

 genera Heniijjhues, Bijolasjpis and Microsciadmm in the sixth 

 volume of the London Journal of Botany (1847)^ together 

 with new Tasmanian Hydrocotyles ; the same famous Botanist 

 having introduced Didisciis Jmmilis and Xanthosia dissecta 

 into the Icones Tlantarum a while before ; and in his admir- 

 able Flora of New Zealand he identifies the Australian 

 Orantzia with an American species. 



In the year 1847 we find proved in SchlechtendaFs 

 Linncea the existence of the European Slum angustifolium in 

 Australia, from specimens sent by Dr, Behr ; and we observe 

 nearly simultaneously an account of a new Dmietoj^ia by 

 Bunge in SchlechtendaFs and Mohl's JSotanische Zeitung ; 

 two other species of that genus are noted by the same 

 acute botanist the year before in an index of plants culti- 

 vated in the Botanic Garden of Dorpat. The next contri- 

 butions are chiefly from the West Australian collections, 

 prepared by the venerable Drummond, which offered to 

 Turczaninow the opportunity of enriching the system of 

 umbelliferous plants with additional species of Hydrocotyle, 

 Didiscus, (referred by him to Bvmetojfiia) ^ Tracliymene, 

 XantJwsia and Platysace, the diagnostics of which appeared 

 in the 22nd volume of the Bulletin de la Societe Bnperiale 

 des Naturel de Moseou, and are reprinted by Walpers 

 in his useful Annal, Botan. System., a periodical which we 

 regret seeing discontinued after the death of its laborious 

 and ill-supported author, and which was formerly the 

 principal source of information to botanists abroad and to 

 travellers who had no direct access to numerous botanical 

 works, for which the Be^ertorium and the Annates of 

 Walpers formed a valuable substitute. In the 1st volume of 

 the latter, (issued 1849), we observe the genus Microsiadium 



