Urica.'] EEICACEiE. 225 



" Detected by our valued friend, J. T. Mackay, Esq., in Septr., 1830, 

 growing on the sides of IJrrisbeg mountain, Connemara": Miff. 

 Bot. Supp. Plate 2^/4, dated July ist iSjj. On tie western declivity 

 of TJrrisbeg mountain near Eoundstone, Sept. 1 830. Since found by 

 John "Wynne, Esq., and otters in the district of Erris, Co. Mayo : 

 Flor. Sib. Covering at least a quarter of a million of acres in the 

 Ballyoroy mountains, Erris (Moore) : Phytol. 18^2, p. 597. On 

 Mweelrea, at the mouth of the Killary Harbour, Mayo, 1838 {Simon 

 loot Sf Joseph Boolcer) : Mack. App. to Frazer 4th EA. 18^4 — and in 

 1882: Sa/rt 1883a. Curran Achill and Borrishoole lake: Brit. 

 Flor. FA. vi. 18^0. At Mulranny opposite the island of Achill 

 {^Lady Louisa Knox) : Cyl. All along Achill Sound on the shore 

 of the mainland opposite Achill Island, and thence near the shore as 

 far as the north end of Carrowmore lake in Erris {Moore) : Cyl. 

 At Eidge Point and near Dugort, Achill Island, 1897 ; J.R. Sheridan. 

 Two miles north of Behnullet and near Belmullet on the Mullet, 

 1887; Sa/rt. Mountains about Kylemore ; on each side of Killary 

 Bay ; and about Salruck pass ; J. Mae Kinnon. 



Usually a robust plant, but a dwarf variety with flowers of a 

 deeper colour occurs in Erris and in Achill Island. In mild winters 

 the Irish plant has been repeatedly observed to flower in January. 



Not in Great Britain. Abundant in Portugal and north-west 

 Spain ; rare in south-west France, not reaching north of the Grironde ; 

 and, in spite of its name, absent from the Mediterranean region. 



First found by Mackay, at Urrisbeg, in 1830, and first published 

 in 1831 {Sooker Brit. Flor. 2nd Fd.). 



DABEOCIA D. Don. 

 1. D. polifolia D. Don. — St. Dabeoc's Heath. 



Frioa dabeoeii Linn. — Menaiesia polifolia Juss. — Vaccinium canta- 



hricum Huds. 

 Sibernici ppaoc na haoin coipe {Fray-ack na hain cusM), One- 



fooiedSeath — ppaoc gdltoa {FVay-ack gawldM), Foreign Seath.^ 



Districts — — VIII. IX. 



lat. 53° 15' — 53° 55'. Galway and Mayo only. Type, Hibernian. 



Eocky heaths ; locally abundant. Fl. July- August. 



' These native names seem to be quite local. The first is iised in the neigh- 

 bourhood of Oughterard; the second, which may also be rendered "fine" or 

 "elegant " heath, is useiin Glen Inagh. 



Q 



