472 



5. Eucalyptus gracilis, F. v. M. 

 A "Mallee." 



This species was described by Mueller in 1884 in Trans. 

 "Vict. Inst., i., 35, and Frag, ii., 55. Bentham, in his "Flora 

 Australieusis," acknowledges the specific rank of this Euca- 

 lyptus, as well as Tate in his "Census of South Australian 

 Plants," 1889. Maiden (Crit. Rev. Gen. Euc, vol. i., p. 

 81) synonymizes this species under E . calycogona, Turcz. The 

 material of E. calycoc/ona has not been investigated by us, 

 so that we cannot speak as to the synonymy of these species. 

 The material examined is E. gracilis, F. v. M. 



The botanical and chemical characters are given in our 

 work, "Eucalypts and Essential Oils/' p. 129. 



6. Eucalyptus odorata, Behr. (Sch. Linnea., xx., 657). 



"Peppermint." 

 PI. 1. 



Behr's species is acknowledged in Bentham's "Flora 

 Australiensis" and Mueller's "Eucalyptographia," and later 

 by Maiden in his "Critical Revision of the Eucalypts, " 

 vol. ii., part i., p. 26, as well as in the Trans. Roy. Soc. 

 S. Aus., 1903, where he goes fully into the synonymy of the 

 species. 



With most of this latter synonymy we are not in accord, 

 especially placing E. Lansdowniana under E. odorata. 

 Brown, in his "Forest Flora of South Australia," figures 

 both species, and if any reliance can be placed in delineation 

 greater differences could not be better illustrated. Brown's 

 iigure is what we regard as E . Woollsiana. 



The species, as understood in this paper, is restricted to 

 the tree commonly known as "Peppermint," found in the 

 neighbourhood of Adelaide and elsewhere in the State, in- 

 cluding Kangaroo Island. To assist in its identification a 

 figure is here given (pi. 1.). 



The results given in our work, "Eucalypts and Essential 

 Oils," p. 210, were obtained from an oil submitted by 

 Faulding & Co., of Adelaide, under that name, and was not 

 of our distillation. 



Essential Oil. 



Leaves and terminal branchlets of this species for distil- 

 lation were collected at the Kingscote end of Kangaroo 

 Island in the month of June. 



This species is considered by Eucalyptus distillers of 

 Kangaroo Island to be of equal value with E . cneorifolia for 

 oil distillation. 



