646 INDIGENOUS PLANTS IN THE COBAR DISTRICT, ii., 



A. ankura (additional note). A variety having phyllodia 

 4-6 inches long, and f-1 line broad, and almost terete, 

 but with the fruit typical of the species, is growing 

 near Lerida. August. 



The Mulga-Balls, mentioned in my first List, are 

 formed in the podge of sheep, and are considered to be 

 the result of the sheep eating the young shoots and 

 branchlets of the Mulga, especially of the narrow- 

 leaved forms. A report from the Bacteriological Dept. 

 says : — " This consists, for the most part, of long cells 

 usually tapering at each end, but sometimes truncated 

 at one end, sometimes at both ends. Through the 

 centre of the cells, there runs frequently a narrow 

 canal. The walls of the cells are very thick, and some- 

 times apparently pitted. These cells have the appear- 

 ance of bast-fibres, and as several may frequently be 

 found adhering, this view is strengthened. A small 

 number of spiral vessels and wood tracheides are also 

 present. Interspersed among all these, is a brown 

 powdery deposit without cell-structure. It is suggested 

 that the balls are due to the bark of a tree eaten by the 

 sheep. The brown colouring matter of the balls is due 

 to the undigested outer particles of the bark " (Mr. G. 

 P. Darnell-Smith, B.Sc). 



A. harpophylla F.v.M. "Brigalow." Tindare and Wutta- 

 goona. 



HaLORAGEjE. 



Halokagis aspera Lindl. (H. ceratophylla Endl.). On the spini- 

 fex-country, 6 miles east of Shuttleton. September. 



Myrtace^e. 

 Leptospkrmum ellipticum Endl. At Restdown. September. 

 Thryptomene ciliata F.v.M. Chiefly on ridges of Devonian 



rocks, at Boppy Mount, but gradually spreading to other 



soils. September. 

 Melaleuca uncinata R.Br. On the granite hills at Nymagee, 



at Mount Boorandara, and Wuttagoona. 



