1912. Scui^ivV. — Sot7ie Introduced Plants m Kerry. 215 



traffic in cattle, others like Beale Point and Portmagee 

 are some distance from the nearest railway, and have 

 little traffic of any description. So far, the three important 

 inland towns, Listowel, Castleisland, and Killarney, appear 

 to have quite escaped this alien. Matricaria suaveolens 

 is now on record for nearly three-fourths of the forty di- 

 visions of Irish Topographical Botany, and considering that 

 it was first recognised in Ireland by Mr. Colgan so recently 

 as 1894, it affords an instance of plant-invasion probably 

 unequalled in modern times. 



DiPLOTAXIS MURALIS DC. 



This is another recent arrival in Kerry, and is increasing 

 there ; it is a well known lover of railway tracks, and 

 gravelly or waste places. 



Kerry N.—lt was first noticed by. the present writer in 

 1902 at Ballyheigue and recorded in the Irish Naturalist, 

 1903, p. 114 ; it occurred then very sparingly at the foot 

 of a roadside wall, but was seen there in greater quantity 

 five years later. In 1906, it was found near Fenit pier 

 on Tralee bay, and in 1909 was noticed in some plenty 

 on the railway bank near Killarney ; R.W.S. Kerry 5. — 

 Sparingly on the railway near Cahersiveen, and again at 

 Reenard Point, opposite Valencia Island, 1910 ; Miss Delap. 



This plant appears to be spreading rapidly in the south of 

 Ireland, chiefly along the railways, and has, no doubt, 

 come to stay in Kerry. 



Lactuca MURALIS Gaertn. 



As far back as 1888 this plant was noticed by the writer 

 as quite established about the ornamental grounds of 

 Glenfiesk Castle, a mile and a half east of Killarney, and 

 its occurrence there recorded in the Journal of Botany, 

 1890, p. 114. As this is one of the rarest plants in Ireland, 

 its presence in Kerry, even in an introduced state, is of 

 great interest, and its behaviour in the above locahty has 

 been carefully watched. When first noticed it occurred 

 principally beside walls and walks, with some scattered 

 plants on a shady bank, and among ornamental shrubs. 

 It varied greatly in quantity from year to year, sometimes 

 being reduced to a couple of dozen plants, in other years 

 reaching three or four times that number, the chief cause of 



