FLORULA OF A PIECE OF WASTE GROUND AT ABERDEEN 245 



less abundance, in 1895. This year I observed them in the 

 enclosed area on only three plants, and to a far less marked 

 degree. I have of late years frequently found the like on 

 plants of T. rcpens and of T. hybridum in the neighbourhood 

 of Aberdeen, almost always on ground (such as rubbish-heaps, 

 embankments, or roadsides) recently disturbed and with 

 abundant plant-food. I find that on marked plants they may 

 recur in the following year only in slight degree or not at all. 



Scorpiurus siibvillosa, L. This (native in South Europe) was not 

 very rare on open spots in 1893, but did not reappear. It had 

 not occurred near Aberdeen before. 



Pisum arvense, L., and Viria Faba, L., each represented by a few 

 examples in 1893, did not reappear. Both were probably 

 introduced in refuse. 



Vicia tetrasperma, Moench., was not very scarce in 1893, but failed 

 to establish itself, though a British plant. It had not been 

 observed in this district before. 



Lathyrus hirsutus, L. (a native of Europe from Essex to South 

 Russia), and L. Ochrus, L. (a native of South Europe), were 

 both new casuals for Aberdeen. 



Fragaria elatior, Ehrh., despite its tendency to spread, has quite 

 failed to do so on this ground, and has died out. 



Potentilla recta, L., native on great part of the European Continent, 

 may have been introduced with sweepings of shops, or with 

 garden rubbish, though scarcely showy enough one would think 

 for cultivation. It is holding its place, having established 

 itself at one place on the cinders. Here several large plants 

 are fruiting very freely. 



Rubus id<zus, L., and Pyrus Malus, L., are the offspring of seeds 

 evidently, and are probably due to the refuse of fruiterers' 

 shops. 



Ribes Grossularia, L., and R. nigruin, L. The same remarks apply to 

 these. 



Saxifraga umbrosa, L. Several young plants, outcast from some 

 garden, were observed in 1893, but had failed to establish 

 themselves. 



Lythrum Salicaria, L. One plant has grown to a considerable size, 

 and flowers and fruits, producing apparently good seed, though 

 alone. 



(Enothera Ifruticosa, L. The single example found in 1894 was 

 not in such condition as to permit of determining the species 

 with certainty. (E. fruticosa is a native of North America. 



(To be continued.} 



