BY J. 11. MAIDEN. 759 



and flows over it, yet it is nearly sound after 47 years. The tree 

 grows up to 5 feet in diameter. 



E. umbra grows in drier situations, and even on the tops of 

 hills. It may therefore be termed "Mountain White Mahogany." 

 It is not long in the bole, for it soon branches out. Like 

 E. acmenioides, it grows up to 5 feet in diameter, and has 

 a white inner bark. It has an inlocked, wavy timber of a 

 valuable character. The differences between the timbers of E. 

 acmenioides and E. umbra require to be worked out. E. umbra^ 

 long looked upon as a coast variety of E. acmenioides^ has a flat- 

 rimmed fruit and is the form which connects with E. jnlularis, 

 as pointed out by Bentham. The leaves and buds also support 

 that affinity. 



Usually the flat-rimmed fruit is accompanied by thick foliage, 

 indicating umbra. But sometimes this coarse foliage accompanies 

 thin-rimmed fruits which one has hitherto assigned to E. acmen- 

 ioides without hesitation. Such, for example, is the "Messmate'^ 

 of Awaba, which grows on foot-hills, moist places, not swamps. 

 These specimens certainly show a transit between E. umbra and 

 E. acmenioides, and in the present state of our knowledge I doubt 

 if we can always separate the two species in the absence of 

 juvenile foliage. 



10. E. SlEBERIANA, F.V.M. 



Copy of original label of Mr. C. S. Wilkinson, late New South 

 Wales Government Geologist. "No. 6. ' Stringybark,' 'Mess- 

 mate.' Trees up to 4 feet in diameter growing straight and 

 lofty, the trunk covered with deeply furrowed fibrous bark of 

 dark brown colour, resembling that on Ironbark, but not so hard. 

 Branches and boughs smooth and white. Dromedary Ranges, 

 1,500 feet above sea-level. Formation Silurian, 2nd November, 

 1878 " (National Herbarium, Melbourne). 



Mueller originally labelled this E. hcemastoma, and then can- 

 celled it for virgata and Sieberiana. The specimens are typical 

 E. Sieberiana, F.v.M., and the reasonableness of the confusion 

 with E. hcemastoma and E. virgata a quarter of a century ago is 

 quite obvious and has often been explained by me. 



