289 



Matlll'O leaves. — Very similar to those of E. Luehmanniana, with, perhaps, the following 

 differences: — The leaves are thinner, the petioles less flat, and there is a greater tendency in the lower 

 leaves for the veins to proceed right from the base of the leaf. Rarely longer than 4i inches or broader 

 than 1 inch. 



Peduncles. — Very much flattened, in proportion to the size of the fruits, perhaps as much so as 

 is the case in the normal species. 



Calyx-tube. — Similar to the normal species, though less angular. Usually seven flowers in a head. 



Operculum. — Proportionately smaller, also less pointed. Pale-coloured operculum like some of 

 the slightly-pointed operculum cDast-forms of obtusiihra. 



Fruits. — Flat-topped ; when not fully ripe quite glaucous, with the exception of the rim which is 

 red, contrasting strongly with the remainder of the fruit, which is smoother than that of the normal species. 

 Pale brown and shining when fully ripe ; from nearly hemispherical to subcorneal, the edge of the rim 

 sharp, and 5-celled. 



Dimensions. — Greatest length and greatest breadth of fruit about ^ inch. Width of rim in mature 

 fruit, J inch. 



Range. — In the taluses of the sandstone cliffs about Mount Wilson. (Deane and Maiden in Proc. 

 Linn. Sac. N.S.W., 1897.) 



Notes supplementary to the description. 



It is not only found at Mount Wilson, but at Mount Victoria and other elevated 

 parts of the Blue Mountains. It is a typical ribbony gum, the ribbons being 8 or 10 

 feet long and even more, broad and tough. We think it very probable the species has 

 been sometimes noted as E. viminalis, judging from its appearance as a ribbony gum, 

 but it is a handsomer and more erect species than E. viminalis. It is a tall tree, very 

 straight, 60-100 fee; high, and even more. It has absolutely clean, shiny stems except 

 at the butt, say for 8 or 10 feet, where it is more or less fibrous. At Mount Wilson 

 it is associated with E. goniocalyx, and at Mount Victoria with the same species to a 

 less extent. It has reddish twigs, and slightly glaucous leaves rich in oil. . . . 



The Blue Mountains tree is known and cut commercially as " Mountain Ash." 

 This is, of course, the ordinary name of E. Sieberiana, F.v.M. The timbers of the two 

 trees are not dissimilar, neither are the immature fruits (Deane and Maiden, loc. cit.). 

 At Mount Irvine it is known as " Yellow Gum." 



The large calyptra-like bracts on the umbels of buds, so obvious in the normal 

 form, are very marked in the variety also. Both type and variety have specially 

 fragrant leaves. 



SYNONYMS. 



4. E. oreades, K. T. Baker, Proc. Linn. Soc. N.S.W., xxiv, 596 (1899). Figured 



with unripe fruits. 



5. E. virgata, Sieb., var. altior, Deane and Maiden. {Proc. Linn. Soc. N.S.W., 



1901, 124.) 



