1 2 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 



Fagusferruginea. From North America. It makes large forests 

 there, but has not the importance of Fagus sylvatica in Europe, 

 says M. Bommer. There is also a southern form which might 

 be useful for sub-tropical work. 



Betula pubescens. Birch. Very striking, with its pure white 

 bark in the waning light of this fine autumn afternoon. The 

 white rubs off like whitewash. 



Betula excelsa. With better timber than the European birch : 

 growing well here. It should have a forest value, says M. 

 Bommer. 



Cormis florida. An underwood tree from North America 

 with foliage striped red and green : the flower, says M. Bommer, 

 is splendid. 



Platanus occidentalii. The true tree from America : certified 

 by Dode, the French plane specialist, says M. Bommer. This 

 does away with the statement that the true P. occidentalis will 

 not survive in northern Europe. No doubt it is scarce. M. 

 Bommer cites three good trees at Plantiferes near Metz. But 

 for all practical purposes it is useless in northern and mid-Europe. 

 {Belgian Exotics, p. in). 



Carya sulcata. Looks well. At 8 years is i8 feet high : a 

 fine yellow colour now. Its great pinnate leaves recall the 

 Caryas at Kew. Carya totnentosa had the best autumn tints 

 this year among the Kew hickories. 



Carya alba. With huge leaflets now all yellow and brown ; 

 shows fine autumn tints. But at 13 years from seed is only 



2 inches in diameter by 15 feet high. I cannot compare this 

 slow growth with the Kew trees, as the ages of the latter are 

 not stated. It is a general defect, in nearly all the Kew labels, 

 that the age of the trees is left out : the only defect in the 

 model labelling at Kew. 



Acer rubrum. Now ablaze with all its fiery autumn tints. 

 Some years, says M. Bommer, it is more brilliant. This (19 13) 

 autumn is a mild season, for Brussels, so that there are quiet 

 tree-tints, as in England. 



Qiiercus rubra. Never, says M. Bommer, has much autumn 

 tints, but the young shoots are reddish. It is the same at Kew, 

 where I have observed it for some years. 



Acer saccharum. Sugar maple ; growing well here. At 

 12 years averages about 18 feet high : good autumn tints. 



Pruftus serotina. A fast-growing tree with mahogany-like 



