1912-1913-] Edinburgh 's Park and other Trees. 7 



and, like the pyruses and laburnums, it gives a distinct note 

 of colour when in flower in early summer. In Queen Street 

 Gardens there are some interesting exotic species, chiefly 

 European, which have grown into good specimens, and in the 

 Meadows the North American C. Douglasii has been freely 

 planted; but although these exotic species grow well, and 

 some of them are very ornamental, none of them surpasses the 

 common thorn in beauty when in flower. 



The two laburnums are the only trees belonging to the 

 order Zeguminosce which have been planted to any great 

 extent in Edinburgh. The North American locust tree 

 {Robinia Pseudacacia) occurs here and there, but, although 

 it is a common town tree both in more southern and more 

 northern latitudes, it does not get a sufficiently high summer 

 temperature in Edinburgh to ripen its growth properly, con- 

 sequently it rarely flowers. Both the common laburnum 

 {Laburnum vulgare) and the alpine laburnum (Z. alpinitm) 

 thrive well in the city, and even in the more densely built 

 parts of it specimens of considerable age are to be found. 

 Like the thorns and pyruses, they are useful subjects for 

 planting in open spaces where the area is restricted. 



In this brief survey of the trees growing within the 

 boundaries of the city of Edinburgh, it is only to those kinds 

 which occur in the parks and gardens belonging to the 

 Corporation and to property owners jointly, such as those 

 of Queen Street, St Andrew Square, &c, that attention has 

 been directed. Other kinds might have been noted as occur- 

 ring in the gardens of individual owners, but when those which 

 have been mentioned here are compared with a complete list 

 of the trees hardy in the Edinburgh district, it will be found 

 that, with the exception of about half a dozen, all the genera 

 are represented. 



[This paper was also read this session to the Scottish 

 Horticultural Association, It was illustrated by a large 

 number of lantern slides of photographs specially taken for 

 the purpose. Plate IV. shows a photograph of Ulmus 

 montana, var. pendula.] 



