6 BAILEY, Adventitious Vegetation of St. Anne's-on-lhe-Sea. 



origin by mutation " (London and Chicago 1905 ; 2nd 

 ed., 1907). It is thoroughly established on both sides of 

 the Ribble, and the accompanying plates {Plates 1 to VI) 

 will give some idea of the luxuriance with which it grows 

 at St. Anne's. 



OEnothera humifusa, Nutt, is another American species 

 which has certainly not reached St. Anne's by a garden 

 route. It is a wavy-leaved, small-flowered, prostrate, 

 short-fruited species, delighting in the drier portions of 

 the sandhills. I thought it might prove to be CE. sinuata, 

 Linn., but it has been determined at Kew to be humifusa, 

 Nutt. I saw it for the first time in September and October 

 of last year, near St. Thomas's Church, and also at the 

 southern end of All Saints' Road. 



Anaplialis margaritacea, Benth. and Hook., is another 

 plant of American origin. It has occurred on the sands 

 of the North Promenade, in a situation in which the refuse 

 of gardens is frequently tipped, and is not, therefore, 

 likely to have reached St. Anne's with grain siftings. 



Helianthus tuberosus, Linn., is generally distributed 

 over several portions of the sandhills, especially about St. 

 Andrew's Road North, Beach Road, and St. George's 

 Gardens. Although this species is in cultivation, it occurs 

 so often in association with the other aliens here enumer- 

 ated, that it may be regarded as sharing in their common 

 origin. When once established it remains persistent, by 

 reason of its creeping rootstock, when the ground is not 

 interfered with. 



Helianthus petiolaris, Nutt. Another sunflower intro- 

 duced in seed is the species thus named by the authorities 

 at Kew. It is a dwarf species, and would doubtless occur 

 more plentifully on the sandhills were it allowed to grow 

 undisturbed ; its conspicuous flowers, however, lead to its 



