BY J. H. MAIDEN. 523 



h. With E. liiicrotheca, F.v. M. — The foliage, bark and timber 

 of the two species are often very similar. The fruits are very 

 different; the valves of those of E. microtheca being exserted. 

 Both timbers are red, but where they grow together the timber 

 of E microtheca is reputed less durable, softer and more faulty 

 than that of E. hicolor. 



c. With E. Behriana, F.v.M. — See my paper "On Eucalyptus 

 Behriana, F.v.M.," in Trans. R.S.S.A., 1902. 



d. With E. iJopulifoUa, Hook. — Specimens from Cobham Lake 

 in the extreme north-west of the State (W. Biiuerlen) have verj'- 

 broad, shiny leaves, which resemble those of E. pajmlifolia a good 

 deal, as well as E. Behriana (as far as herbarium specimens are 

 concerned). 



e. With E. hemiphloia, F.v.M. — The likeness of E. hicolor to 

 E. hemiphloia, F.v.M., var. ynicrocarpa, Maiden, when herbarium 

 specimens are alone available, is often very striking and some- 

 times deceived Mueller. The timbers at once separate them, that 

 of E. hemiphloia being pale and that of E. hicolor being red. 



In this connection the following specimen is interesting. 



E. odorata, var.Jioribunda, Benth. " Inflorescence occasionally 

 compound, connecting the species in some measure with E. hicolor, 

 but the foliage and shape of the flowers and fruits are rather 

 those of E. odorata. On the Yarra, Victoria (B.Fl. iii. 216)." 



I have not seen the fruits, but from the specimens I have seen 

 I would suggest that it is referable to E. hemiphloia. The form 

 should, however, be further enquired into. 



/. With E. crebra, F.v.M. — The similarity of this species to E. 

 hicolor is sometimes marked, particularly in Queensland specimens. 



With typical crehra in the field the confusion could never arise 

 as it is an Ironbark, but as the tropics are approached Ironbarks 

 lose some of their characteristics and more closely approximate 

 to the Red Boxes such as E. hicolor. 



g. With E. calycogona, Turcz. — E. hicolor shows affinity to E. 

 calycogona through the variety gracilis of the latter. 



