70 ALIEN FLORA OF BRITAIN 



ROSACE.E. 



Acaena Sanguisorbae, Vahl. A native of New 

 Zealand, which was found by Mr. W. R. Martin on 

 Heytor Down, Dartmoor, Devonshire. How it came 

 to this bleak moor is exceedingly difficult to determine, 

 but it is almost certain that it was carried thither by 

 reason of its clinging seeds, which would be carried 

 on the fur of animals or the clothes of human beings. 



Amelanchier canadensis, Medic. A native of dry 

 open woods in temperate North America. It has 

 been largely planted in various parts of England, and 

 occasionally, as for instance in the Hurt Wood in Surrey, 

 it has all the appearance of being an indigenous tree 

 among birches, oaks, and other native species. It 

 apparently, however, never ripens fruit. 



Aremonia agrimonioides, Neck. Native in woods 

 in Italy, the Balkan Peninsula, and Asia Minor. First 

 recorded in Britain from Scone Wood, near Perth, where 

 it was plentiful, and believed by Sim, the discoverer, 

 to be native. Apart, however, from the very slight 

 probability of the plant occurring naturally so far from 

 its main range, it was clearly shown that this station, 

 and others in Scotland and the North of England, were 

 of garden origin. 



Cotoneaster integerrima, Medic. A native of most 

 of the mountainous districts of Europe, known in one 

 spot in Britain, namely, on Great Ormes Head. The 

 fact that it has long been cultivated makes it probable 

 that in this isolated station it was originally bird-sown. 



