166 A RESEARCH ON THE EUCALYPTS OF TASMANIA 



species in conjunction with Miquel, and so was not 

 acquainted with the New South Wales and mainland trees 

 now going under the name of E . coriacea, that is, Cunning- 

 ham's and Sieber's tree — E . pauciflora of the latter — and 

 so considered he had a new species at the time, for we 

 know later he placed it under E . coriacea. Since that date 

 it has been customary to regard the Tasmanian and main- 

 land trees as one species ; but the investigation taken in 

 connection with this paper shows that such is not the case, 

 and that the two are separate species, and so Mueller was 

 correct after all. The original name of E. phlebophylla 

 is thus here restored. 



Mueller, however, concurs in Bentham's synonymy 

 (supra) in his '' Eucalyptographia," and places Tasmanian 

 and mainland trees under E. coriacea in that book. This 

 lumping of species, even his own, was characteristic of the 

 Baron in his later work. Maiden, in his ''Critical Revision 

 of Eucalvpts," agrees with Bentham's and Mueller's later 

 classification. The original description is in Latin, and 

 therefore does not permit of the finer points of determina- 

 tion as obtains when given in English. 



As far as we have been able to determine, the chief 

 differences between E. phlehnphi/lhi , F. v. M., and E . cori- 

 acea, A. Cunn., are: — 



(1) Field Characters: — Hooker, in his "Flora Tas- 



manise," calls E. phlehophyUa the '' Weeping 

 Gum," with generally spreading limbs and 

 weeping branches, and branchlets that hang 

 down 10 or 12 feet, and gives the height from 

 40 to 50 feet. 



E . coriacea has not this field character, but is 

 a tall, upstanding tree with large, spreading 

 branches. 



(2) The leaves of E . phlehophj/lla are rather smaller, 



less coriaceous, and the venation by careful 

 observation will be seen to be different, in that 

 the lateral veins are not so long, and earlier 

 anastomise than in E . coriacea. 

 f3) The operculum of E . phlebophi/lla is pointed, as 

 against the domed form of E . coriarea. 



(4) The fruits are larger and '' woody " compared 



with those of I'J . coriacea. 



(5) Timber (see infra). 



(6) Chemical constituents of the oil. 



