i86 ANNALS OF SCOTTISH NATURAL HISTORY 



^EGOPODIUM PODAGRARIA, Z., is locally common, but is limited to 

 gardens and their hedges. It is occasionally imported from 

 nurseries. Although a few seeds ripen, I have never seen it 

 spread by this means. 



SAMBUCUS NIGRA, Z., grows near houses, where it is frequently 

 planted by crofters. It has no appearance of being native on 

 this part of the coast, or, as far as I have seen, in Mull or Skye. 

 It is probably not a native of Scotland. 



TANACETUM VULGARE, Z., grows on the shore, close to an old garden. 



MI.MULUS LUTEUS, Z., is perfectly established among the native 

 vegetation in a few places. It increases usually by stems bear- 

 ing roots being washed down streams to lochs, etc. 



PLANTAGO MEDIA, Z., was introduced among grass seed in 1884, 

 and has increased in dry gravelly soil ; but it has not spread on 

 to the peat. 



SALIX ALBA, Z., occurs, planted, near houses. 



SALIX VIMINALIS, Z., is a common shelter-hedge for crofters' gardens ; 

 and grows occasionally at the sides of streams which have 

 passed near gardens. I have watched one case in which rooted 

 branches after having been thrown from a rubbish-heap into a 

 river have taken root on the banks lower down. This and the 

 preceding are probably not natives of Scotland. 



CASUALS. 



FUMARIA OFFICINALIS, Z., is a rare weed in gardens. 



LEPIDIUM HIRTUM, Sin., was introduced among grass seed in 1887, 

 and increased by seeding until 1890, when it was exterminated 

 by rabbits. 



TRIFOLIUM PROCUMBENS, Z., is rarely seen, usually among rye- 

 grass. 



CICHORIUM INTYBUS, Z. One plant appeared in 1891 among 

 grass which had been sown six years previously. The species 

 did not obtain a footing, although the plant was allowed to 

 seed. In Eigg this species has become naturalised at the side 

 of fields. 



SONCHUS OLERACEUS, Z., is rarely seen in cultivated fields. 



ANAGALLIS ARVENSIS, Z., grew near a garden, where it remained for 

 a few years, but then died out. 



Some plants are so ubiquitous that it is perhaps now impossible 

 to consider them otherwise than native, although their distribution 

 is suspicious. They are most common near the abodes of man or 

 of cattle, and decrease in frequency in proportion to their distance 



