1 86 July, 



SOME RECENT RECORDS FOR THE FLORA OF 



COUNTY DUBLIN. 



BY NATHANIElv COLGAN, M.R.I.A. 



Thk following notes embody a selection from the more in- 

 teresting results of a continued survey of the County Dublin 

 flora, the records belonging for the most part to the years 

 1901 and 1902. The botanical exploration of the county is 

 now so far advanced that the addition to the flora of a well- 

 defined native species is hardl}' to be looked for. There is 

 still room, however, for additions in the shape of aliens or of 

 critical sub-species or well-marked varieties, and a few such 

 additions will be found in the records here given, where they 

 appear with the names printed in small capitals to distinguish 

 them from the general body of the notes. In the case of 

 aliens this distinction is used only where the plant is con- 

 sidered so well established as to deserve a place in the per- 

 manent flora. Where no authority for a record is given the 

 plant was observed by the writer. 



Thalictrum dunense, Duni.— At the iiorthem end of Portrane 

 peninsula, 1900-02. 



Ranunculus Lingua, L— In a marsh drain near Balrother}', south of 

 Balbriggan, 1902. Now a very rare plant in the county, save in the 

 Royal Canal. 



FUMARiA PURPUREA^ H. W. Pugslev. (^fom n. Bot., 1902, pp. 179-S0.) — 

 Specimens gathered in sandy fallows near Rush in 1902 have been 

 marked " typical " by Mr. Pugsley, who has kindly examined for me a 

 series of County Dublin P^umitories. Close to F. speciosa, Jord., and 

 long mistaken by British botanists for A Bonvi oi the same author, 

 as Mr. Pugsley has well shown in his valuable paper on the British 

 Capreolate Fumitories {Joiirn. Bot., loc a't.'). True F. Bomt was found 

 in abundance in a corn-field at Ballybrack in 1902. 



Cardamine pratensis, L. — The remarkable proliferous state of this 

 species, in which young plants are developed on the upper surface 

 of the leaflets, was gathered in the central marsh at Howth during 

 the mild wet winter of 1902. According to Mackay (F/or. Hib., p. 20) 

 this state produces double flowers. 



♦Alyssum calyclnum, L.— One strong plant, 7 inches high, in asandy 

 field near Kilcrea, Malahide Creek, 1902 : Dr. Scully & N. C. This 

 alien has appeared at intervals and sparingly in sandy ground along 

 the coast from Portmarnock to Rogerstown for the last 65 j-ears, 

 but, so far, does not appear to have succeeded in establishing 

 itself. 



