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ADDITIONS TO THE FLORA OF SOUTH AUSTRALIA. 



NO. 12. 



By J. M. Black. 

 [Read October 11, 1917.] 

 Plates XVIII. to XX. 



This list deals mainly with plants collected at Ooldea 

 in January, 1917, and at other places along the East- West 

 Railway in June and July of the same year by Capt. S. A. 

 White'. The country about Ooldea appears to have been 

 scarcely touched botanically since Ernest Giles passed that 

 way on his exploration westward in 1875. The name of the 

 place is given as "Youldeh" in Giles' "Australia Twice 

 Traversed.'' Several of his plants, and of those collected by 

 W. H. Tietkins and J. Young, members of the party, were 

 recorded by Mueller in vols, ix., x., and xi. of the 

 "Fragmenta." 



This paper contains descriptions of two species new to 

 science, in the genera Thryptomene and Hibbertia, and a 

 record of two Western Australian Acacias and one Goodenia 

 not previously found in South Australia. 



Where a new record is made for any of Tate's districts, 

 the fact is noted after the locality given, and alien plants are 

 indicated by a preceding asterisk. 



The remarks in brackets are Capt. White's field 

 notes, and in cases where his name is not mentioned, it is to 

 be understood that he is the collector of the specimens from 

 Ooldea and other places on the East-West Railway. 



Gramineae. 



Stipa scelerata, Behr. fS. setacea, R. Br., var. latifolia, 

 Benth.). Ooldea (S. A. White). I think this grass, which 

 I have also from Karoonda, in the Trans-Murray scrub, 

 should take rank as a separate species, on account of its flat 

 leaves, 4-5 mm. broad, stouter stems, perennial rhizome, and 

 usually longer awns. [Grows to a good height, but found 

 sparingly, in the sandhill country.] 



Panicum gracile, R. Br. Ooldea. Not only is there- a 

 bristle rising from the base of the terminal spikelet of each 

 spike, but several of the lower spikelets are also subtended by 

 a bristle longer than themselves. [Often met with growing 

 up in the centre of bushes which afforded it protection.] 



