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List of some Plants inhabiting the North- 

 eastern PART OF THE LAKE TORRENS BaSIN. 



By PEOrESSOE Ealph Tate, F.G.S., F.L.S. 



[Read October 1, 1883.] 



The region, wliicli I examined botanically during two weeks 

 in each of the months of June and September of this year, em- 

 braces the southern half of the Aroona Eange and the plain 

 extending therefrom to the shore of Lake Torrens. The Lake 

 Torrens Plain is here bounded at the distance of about 25 miles 

 from the lake by a range of hills, commencing in the latitude 

 of Beltana and following a north-west course through Mount 

 Deception, Mount Scott, Aroona Mountain, Mount Parry, 

 Termination Hill and Mount Nor'-West. This elevated 

 region, which I name the Aroona Range, is west of and diver- 

 gent from the Flinders Eange ; its western flank is constituted 

 of clay slates, quartzites and quartzose sandstones, dipping 

 easterly ; to the eastward limestones are intercalated, and the 

 whole finally concealed by the drifts which occupy the synclinal 

 valley of Leigh Creek. 



The plain of Lake Torrens is at its margin chiefly composed 

 of loams and gravels shed from the adjacent slopes, or trans- 

 ported from the far distant Flinders Eange by the torrential 

 streams, which debouch upon the plain ; further out, these 

 drifts are concealed by low, more or less parallel, sandhills 

 separated from one another by loamy flats or claypans. 



The flora of the basin of Lake Torrens is chiefly known from 

 collections made by Babbage, Lattorf and others at its wes- 

 tern and north-western parts ; whilst little or nothing is 

 known of the region under review. It belongs to that type of 

 vegetation proper to the "salt-bush" country, such as prevails 

 throughout the dry zone of Central Australia. 



The majority of the plants are common to the plain and 

 hills, though the sandhills, after a suflicient rainfall, bloom with 

 a great variety of annuals not met with on the stony ranges. 



In the accompanying list, I have given the names of the 

 plants which have not been recorded from the Far North, 

 except those of a few which call for special remarks. 



The most noteworthy fact is the presence in this area of 

 many species hitherto not known in South Australia except on 

 the confines of this province towards New South Wales and 



