FLORULA OF A PIECE OF WASTE GROUND AT ABERDEEN 245 



vinifera, Medicago lupulina, Melilotus officinalis, * Lotus 

 uliginosus, Vicia angustifolia, var. Bobartii, Heracleum 

 Sphondylium, Daucus Carota, Scabiosa arvensis, Anthemis 

 Cotula, Chrysanthemum segetum, Matricaria Chamomilla, 

 Senecio Jacobsea, *Centaurea Cyanus, Cichorium Intybus, 

 Hieracium boreale, *Fraxinus excelsior, Echium vulgare, 

 *Veronica montana, Mentha piperita, M. arvensis, *Prunella 

 vulgaris, *Phalaris canariensis, Festuca rubra. To these 

 might almost be added Sisymbrium pannonicum. Some of 

 these, of which only a very few plants were seen in 1896, 

 may have been overlooked in 1897 among the dense 

 vegetation, but several, e.g. Melilotus, are too conspicuous 

 to be readily overlooked. A few have been destroyed by 

 the operations of spreading the cinders and preparing part of 

 the ground for new railway. The casuals, growing on 

 rubbish, are of course destroyed when the rubbish is 

 removed, so that their occurrence and disappearance signify 

 little. A larger number of disappearances must be accounted 

 for by the situations where the plants grew having been 

 invaded and covered by hemlock, thistles, and coarse grasses. 

 The plants found in 1897, additional to those noted 

 in 1896, are few, viz. : 



(a] Casuals noticed for the first time, introduced with rubbish from 

 the mills or railway ballast : Sagina procumbens, Caucalis 

 latifolia, Lycopsis arvensis, and Carex ovalis. Only one or two 

 examples were found. 



() Not previously observed, but possibly there in 1896: Lotus 

 tenuis, ^Egopodium Podagraria, and Poa nemoralis. 



(c] Inadvertently omitted from former list : Cochlearia Armoracia 



and Achillea Ptarmica. (See Festuca rigida also.) 



(d) Casuals observed in years earlier than 1896 : Papaver Rhoeas 



and Brassica Napus. 



Very few of the introduced plants now survive, even of 

 those which at first became more abundant and seemed likely 

 for a time to secure a footing. 



