182 ANNALS OF SCOTTISH NATURAL HISTORY 



MENTHA HIRSUTA, Huds., has been probably introduced? It is 

 rather common, but only at sides of streams, near houses, and 

 about deserted crofts. This species was used by the inhabitants 

 medicinally, and was planted near their houses. It seems like 

 a native in ditches in Mull. 



(MENTHA SATIVA, L., is native, and is rather common in wet places, 

 mostly near the sides of lochs.) 



(MENTHA ARVENSIS, Z., is native, but rare, in moist ground, especially 

 where liable to inundation.) 



NEPETA GLECHOMA, Benth., has perhaps been introduced, being rare. 

 It occurs in two stations thirty miles apart ; one being a road- 

 side two hundred yards from houses, the other among deserted 

 crofts. 



STACHYS PALUSTRIS, Z., is a doubtful native, and is local. Perhaps 

 it is a rare native at the side of slow-running rivers ; but it 

 is mostly confined to cultivated fields and adjoining places. 



(STACHYS SYLVATICA, Z., is native, and is common in copses and 

 among shady rocks ; also frequently about waste places.) 



RUMEX OBTUSIFOLIUS, Z., is a denizen probably, being, though 

 common, almost confined to the neighbourhood of houses and 

 cultivated fields. 



RUMEX CRISPUS, Z., is a doubtful native, though very common. 

 Perhaps it is native on the shore and on islands near it. It is 

 a common weed of cultivation. 



RUMEX DOMESTICUS, Hartm., is a denizen probably, being rare, and 

 confined to stations in the neighbourhood of houses. 



CAREX OVALIS, Good., may be a denizen? Though frequent, it is 

 almost confined to wet roadsides, footpaths, and the sides of 

 neighbouring fields ; rarely occurring at the sides of rivers and 

 lochs, and even there nearly always close to paths on which it 

 is to be found. A species increasing through man's agency, it 

 is alone among Carices in this respect ; for though Carex flava, 

 L., also increases along footpaths and sheep - tracks, it is 

 generally diminished through drainage. 



AMMOPHILA ARUNDINACEA, Host., is locally common. Native on 

 blown sands in Ardnamurchan, it has been planted in Moidart, 

 also in Arisaig and Eigg. 



POA ANNUA, Z., is perhaps a denizen ? It is very common in gardens 

 and waste places, and especially on roadsides chiefly. It is 

 found on cattle dung on the moors, and around sheep-shelters 

 on the hills ; but is seldom seen on the hills except where 

 animals are in the habit of specially frequenting. If it be 

 native on the low ground, I cannot think it to be so on the hills. 



