17S 



The receipt of a large number of Gunn's specimens used by Hooker in the 

 preparation of Fl. Tas. has enabled me to clear up some hitherto doubtful points. 



E. gigantea. Hook., fil., Lond. Jonrn. Bot., vi, i79, is " Stringybark 

 colonorum." 



E. gigantea is in Fl. Tas. i, 136, described in practically the same words, and 

 it is called " Stringy-bark Gum." The specimens quoted are Gunn's 1,095, 1,104, 

 1,106, 1,965, 1,966. 



In Part II, p. 59 of this work, under F. ohliqua, I have quoted Hook., f.'s 

 remarks about Gunn's 1,095, from Lake St. Clair. The specimens labelled " 1,095," 

 which have been seen by me are, however, nearly typical ohliqua from Lake 

 St. Clair. It will be observed that Hook., f. looked upon these specimens as a 

 variety of his E. gigantea. 



Hooker says : — " In some varieties the young branches have a fine glaucous 



bloom upon them , Lake St. Clair." While Gunn's 1,095 from 



that locality is non-glaucous, some of Gunn's 1,100 collected by Hooker himself, 

 from Marlborough (on the Upper Derwent, near Lake St. Clair), and which are 

 E. radiata, Hook., f. (non Sieb.), No. 4 {partini), are glaucous, and are doubtless 

 the specimens he had in bis mind. 



The loose branch of fruits of E. giganteus figured at Fig. 4, Plate 7, of Part II 

 of this work were depicted from the same Kew herbarium sheet that contained the 

 foliage specimens indicated, and are E. obliqiia, var. alpina. 



Gunn's 1,104 came from Black River, Circular Head, and is typical E. obliqua. 



Gunn's 1,106 came from Sassafras Valley, and is typical E. obliqua. 



Gunn's 1,965 and 1,966 came from Arthur's Lakes, and are my variety 

 alpina of E. obliqua. In other words, they are E. radiata, Hook., f., No. 4 

 (partim). They are doubtless the originals of the drawing of Plate xxviii, of 

 Hooker's Fl. Tas. 



Of these four synonyms, therefore, E. gigantea, Hook., f., really belongs to 

 E. obliqua, in spite of Hook., f., including two trees under that name in Fl. Tas. 



E. radiata, Hook., f., is founded on error, and the name should now be 

 dropped. 



It is a question whether the " Stringybark Gum " or " Mountain Ash " is a 

 variety or a distinct species. Hooker, most Tasmanians whom I have consulted, 

 and I look upon it as a form of E. obliqua ; Mr. Baker considers it to be a distinct 

 species (delegatensisj. I am well acquainted with the ti'ee in the field, have a very 

 large series of specimens, and I have an open mind on the subject. It is, perhaps, 

 a hybrid of E. obliqua and E. coriacea. The afiinity of this form to E. Bisdoni, 

 Hook., f., var. elata, Benth., is undoubtedly close, and Hooker's confusion of 

 specimens is readily accounted for. Indeed, at one time I held the view that 



