35 



for any locality but Adelaide district. Referred to Prof. Tate, 

 *nd certified by him in. lit. to the writer. 



15. Opdep Liliacese. 



I. Thysanotus exasperatus. Sept./96, &c. 



Very plentiful in favorable seasons in this neighborhood and 

 further southward. An overlap from District S. 



II. Xanthorrhcea quadrangulata. 

 On Mount Remarkable— 28/10/97. On Pekina hills— 12/98. 

 I have been informed that it grows on the Ranges near Mount 

 Brown also. Not recorded nearer than Adelaide district. It 

 grows very freely in the above areas. I referred specimens to 

 Prof. Tate. 



16. Opdep Gpaminese. 

 Alopecurus geniculata. 20/11/00 



Very rare. Willowie township. An overlap. 



17. Opdep Fllices. 



LiNDSiEA LINEARIS. 23/10/99 



Melrose Creek, south of Mount Remarkable. In fair quantity 

 in sheltered spots. Not recorded nearer than Adelaide district. 



The following plants also occur : — 



I. Nitella C?) sp. At Willowie Springs, in brackish pools. 



II. Spirogyra. Willowie Forest (Mar. /OO) and at Willowie 



Springs (July/01). 



III. FuNARiA HYGROMETRICA. In favorable 'situations, as walls, 



rocks, (fee. 



IV. MoNOSTROMA (?) SP. At Willowie Springs, with Nitella. 



These notes would be incomplete without a statement of the 

 probable explanations of the presence of the above-named plants 

 in this locality. I shall divide them into three classes : — 

 I. The overlaps from District S (and W) ; 

 II. The sporadic genera; 

 III. The plants from Adelaide district, &c. 



I. The "Overlaps." 



The frequency of these overlaps appears to me to demand the 



southward extension of District S as far as Goyder's line. Many 



plants appearing in District N are limited to a narrow strip 



lying north of, say, Booleroo Creek. This strip is almost wholly 



