Flora of Australia. 81 



loculicidal in both the Australian species, the valvate and imbri- 

 cate characters do not appear to be constant, and further, the 

 calyx is sometimes tive partite, as was first noted by Mueller, 

 Frai^m., vol. vii., p. 129. There seems therefore to be no solid 

 reason for founding a new genus for the Australian Aizoons, but 

 preferably to give to that genus the somewhat broader latitude 

 ;ulmitt('(l by Beiitham to include the Australian species, in spite 

 of their additional development of septicidal dehiscence, and 

 usually of four partite calyces. 



Helipterum Jesseni, F. v. M. M. Koch, W. Australia, 1904. 



The plant is mentioned on account of its highly misleading 

 external resemblance to Myriocephalus gracilis, Benth. [Specimens 

 exhibited.] 



Heliciirysum SUBULIFOLIUM, F. V. M. (Compositae). (Syn. H. 

 filifolium, F. v. M.). 



Various forms of this plant from W. Australia (Cowcowing, 

 M. Koch, 1904) l)ridge the gap to the very closely allied "species" 

 H. Hlifoliuu), F. v. M., which appears to be merely a form of H. 

 subulifolium, and can probably be classed as a variety of that 

 species. The plant is often confused with Helipterum tenellum 

 on account of its aluiost plumose pappus and filiform leaves but 

 differs widely in its involucre. 



Helichkysum Tepperi, F. v. M. (Compositae). Cowcowing Lakes, 

 W. Australia, M. Koch, 1904; L. Boga, Victoria, H. B. 

 Williamson, 1898. 



This pretty little Composite described by Mueller in the S. 

 Science Record 1882, p. 1, from 8. Australia, was represented in 

 fieri )ariuui by the type specimens only. The plant from L. Boga 

 was named Podolepis Lessoni by Mr. Luehmann, to a dwarf form 

 of which it bears a fairly close resemfjlance, as noted by JNIueller. 

 The two are, however, quite distinct, and H. Tepperi, though 

 apparently rare has a wide range through Victoria, S. Australia 

 and W. Australia. It has l)een recorded from W. Australia 

 by Spencer le Moore in Journ. Linn. Soc. of London, vol. 

 xxxiv., 1899, p. 198. 



