196 The Irish Naturalist, 



quarters a congenial habitat on the limestone drift spread over so large 

 an area. It occurs in all the eight botanical districts into which I have 

 divided the county, and is apparently lowland here, as elswhere in 

 Ireland, hardly reaching to a higher level than 600 feet. 



Orchis IVIorlo (I^nn.)— Green-winged Orchis.— Like the preceding 

 species, though rare in many parts of Northern and Southern Ireland, the 

 Green-winged Orchis is widely distributed through Dublin, where it has 

 been observed in seven of the eight county districts. It grows in great 

 profusion at Baldrummond, N.E. of Ballyboghil, where I found it in May 

 last, thickly spread over some acres of damp pasture. It is frequent in sandy 

 fields to the E. of Portrane peninsula and abundant on the drift banks of 

 Glenasmole and its tributary glen of Glassamuck}'. 



Ranges from sea-level to 1,000 feet at Piperstown. 



Orchis mascula (Linn.)— Eari,y Purpi^E Orchis— Occurs in all eight 

 districts of the county, where, however, it seems less abundant than in 

 the North of Ireland. 



Ranges to 750 feet in Glassamucky glen. 



Orchis Incarnata (Linn.)— Apparently rare in the county, having 

 been found, so far, in only two of its districts. It is recorded from 

 sandy pastures at Sutton and Portmarnock, and occurs in considerable 

 quantity by the Grand Canal at Hazlehatch and in the Slade of Saggard, 

 above the old bridge. 



Ranges from sea level to 600 feet at Saggard Slade (*)• 



Orchis maculata (Linn.)— Spotted Orchis.— The commonest 

 orchid of County Dublin, as it is, perhaps, of all Ireland, and indeed of 

 the British Isles. Well distributed through all eight districts of the 

 county. 



A high ranging species in Dublin, as it is throughout the British Isles, 

 reaching to 1,950 feet on Seefingan mountain. 



Ophrys aplfcra (Huds.)— Bee Orchis.— This, perhaps the hand- 

 somest of the Dublin orchids, occurs in five of the county districts, all 

 the stations, w^ith one exception, the Green Hills, being near the coast. 

 It is apparently rare in all its Dublin stations, save at Skerries, where 

 Rev. T, B. Gibson found it in abundance in 1892. 



A lowland and distinctly calckok species, probably occurring in many 

 other stations on drift banks and gravel eskers. 



(*). 0. latifolia, Linn., is for the present omitted from the county list, 

 as it is to be feared that, though recorded from many stations, it has not 

 been discriminated from 0. incamaia. Treating the two species as an 

 aggregate, the county distribution will be extended to four districts. 



