NOTES ON EUCALYPTUS. 325 



The use of the name "Morrel," which is one of the most 

 used names in Western Australia, is referred to in my 

 "Critical Revision of the genus Eucalyptus," Part xv, pp. 

 166-7. It is usually applied to E. oleosa, F.v.M. var. 

 longicornis, F.v.M. 



Mr. Fred. Brockman, then Ohief Surveyor of Western 

 Australia, and whose knowledge of the trees of that State 

 was very extensive, in an interesting interview, 1 suggested 

 hybridism in regard to the "Morrel." He suggests that 

 the Yate (E. occidentalis, Endl.) from the south coast of 

 Western Australia and the Morrel from the Eastern district 

 of Western Australia (E. oleosa, F.v.M. var. longicornis, 

 F.v.M.) probably have met say in the latitude of Katanning, 

 and "from the common point a process of hybridising has 

 proceeded spreading northward until Yate is lost in Morrel, 

 and southward until Morrel is lost in Yate." 



The late Mr. Henry Johnston, Surveyor General of 

 Western Australia told me that he had given the descriptive 

 name "Yorrel" to a supposed hybrid between York Gum 

 (E. foecunda, Schauer) and the Morrel; it seemed to him 

 to have the timber of the York Gum and the twigs of the 

 Morrel. 



I have not been able to obtain twigs of any of Mr. Brock- 

 man's or of Mr. Johnston's supposed hybrids, so I cannot 

 express an opinion as to their botanical relationships, but 

 I think it is highly probable that hybridism does explain 

 the puzzling variations to be referred to in regard to the 

 Morrels. 



In Journ. W. A. Nat. Hist. Soc, in, 168, (1911) I identified 

 a specimen of var. gracilis from near Salt River, ten miles 

 east of County Peak, Beverley, W.A., as the " Parker 

 Gum" of the new settlers, "but not to be confused with 



' " Western Mail/' (Perth), 15th January, 1910. 



