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DESCRIPTION. 



x CCCL VIII. E. Chisholmi Maiden and Blakely, n.sp. 



Assumed parents— E. piperita Sm., and E. micrantha DC. 



A solitary tree, about 50 feet high and from 18 to 20 inches through at the butt, which extends to 

 9 feet and then throws out three or four branches. The stem from the ground to 9 feet above, where it 

 branches, is covered with rough fibrous bark, as in tvpi al E. piperita, the limbs immediately above this 

 being smooth, creamy-white with blue m. tilings, like those of typical E. micrantha. Timber very similar 

 to that of E. piperita in colour, but it has the very short grain and brittle fracture of that of E. micrantha. 



Juvenile leaves. — The youngest juvenile leaves available are from a branch about 15 feet up. 

 They are narrow-lanceolate, rather pale and inclined to be glaucous, and somewhat similar to those of 

 E. micrantha. They appear to be intermediate. 



Mature leaves. — These also resemble those of E. micrantha, and are glabrous, narrow lanceolate- 

 falcate, without the strong peppermint odour of E. piperita. The dimensions of an average leaf may be 

 uivenas 11 by 11- cm. (-11- by ij inch). The secondary veins are fairly prominent, spreading, and make an 

 angle of 10 to 25 degrees with the midrib. The intramarginal vein is close to the edge. 



Inflorescence axillary, the peduncle short or about 1 cm. long, semi-terete, bearing an umbel 

 of 7-9 slender clavate buds, the operculum acute, scarcely half the length, of the calyx-tube ; pedicels 

 slender, about 3 mm. long or about as long as the calyx. 



Fruits in ska;.e approaching E. pipzrila more closely than those of E. micrantha. Somewhat 

 globular, thi kand shining, with a small orifice, but not urceolate, showing resemblance to E. Moorei and 

 to E. Mitchelliana ; somewhat barrel-shaped, about 6 mm. in diameter. 



Both the supposed parents are common in the district, but no other example could be found which 

 showed resemblance to the supposed parents. E. micrantha is common on the hills and on the flats. 



The type is Xo. 265, Dr. Edwin Claude C'hisholm, then of Marrangaroo, 102 miles west of Sydney, 

 on the Great Western Railway (May, 1922). The name proposed for this hybrid species is a testimony to 

 the excellent critical work that Dr. C'hisholm has accomplished in regard to the Eucalypts (and other genera) 

 of the Marramjaroo district and the Blue Mountains. 



RANGE. 



So far this has only been found in New South Wales, and in the one locality, 

 viz.. " Marrangaroo. growing on top of a ridge between 500 and 600 feet above the 

 surrounding level. In its immediate vicinity are found E. piperita, E. micrantha, 

 E. Sieberiana and E. eugenioides." (E. C. Chisholm.) 



