124 



2. E. Boormani Deane and Maiden. 



See Part X, p. 330. This is assumed to be a hybrid between E. siderophloia 

 Benth.j and E. hemiphloia P.v.M. 



3. E. CALOPHYLLA R.Br., X E. FICIFOLIA F.V.M. 



Perez, Dr. (i. V., 1919. — I had frequent communications with the late Dr. 

 G. V. Perez, of Tenerift'e, and have been long a believer that the puzzling colour- forms 

 attributed to E. ficifolia were, at least, as regards some of them, to be attributed to 

 hybridism with E. caloplvjlla. I sent him seeds of several forms for experiment, and 

 following are extracts from recent letters from him : — 



In order to preserve a very beautiful Eucalyptus hybrid which I am growing from seeds sent from 

 Sydney as E. ficifolia (cherry coloured) (this is really E. cahphijUa var, rosea, J.H.M.), I am grafting by 

 approximation, placing the stock in a large and long bamboo tube; the method succeeds very well, and 1 

 should say that to preserve any pretty shade of colour it will be valuable. I am going to employ as stock 

 the hybrid calophylla x ficifolia, as E. ficifolia is much more delicate in the bad soil I have here, and besides 

 the " cherry " 1 wish to preserve is a hybrid, which does not breed true from seeds. I have thought that 

 what I have written may possibly be of some interest. (31st March, 1919.) 



I shall now endeavour to obtain several plants of one which you sent as E. ficifolia, and which is 

 certainly a hybrid, often referred to in my correspondence with you as " cherry " colour, and most beautiful 

 and floriferous, which began to flower when only four years old, and the progeny of which began to flower 

 as early as two years old, some of them being white, some resembling the parent plant, and some rosy pink. 

 The colour is so beautiful that it is worth while preserving by grafting by approximation, by the method 

 above named, and grafting on its own stock ; I have already two successfully grafted and planted out, 

 but on (>.) true ficif alia, which is not such a good stock. 



One of these days I am going to send you by sample post or perhaps by a postal packet, the capsules 

 of the progeny of this tree, which are most variable and whi-h, like the flowers, tell the story of its hybrid 

 nature. (18th Jane, 1919.) 



The untimely death (on 29th February, 1920) of this accomplished investigator 

 put a stop to experiments which would doubtless have been very interesting. He was 

 a confirmed believer ha hybridism in the genus. 



Some notes on E. ficifolia and E. calophylla will be found in this work, Part XLIII, 

 pp. 78-81. See also a paper by myself " On a Eucalypt Hybrid (E. calophylla x E. 

 ficifolia)," in Proc. Linn. Soc. N.S.W., xli, 185 (1916). ■ 



Interesting results as regards the segregation of commercially valuable colour- 

 forms would follow experiments on Mendelian lines. 



4. E. Consideniana Maiden. 

 See Part X, p. 315. it is suggested to be a hybrid between E. piperita Sm. and 

 E. Sieberiana F.v.M. 



5. E. cornuta x Lehmanni Bourlier. 



In Trabut, Rev. Hod. He -VAlgerie, August, 1901, p. 239. A preliminary 

 note only. 



I have seen no details of this reputed hybrid. 



