274 AMENTiFEB^. \_Myrica. 



cultivated districts, but probably indigenous throughout 

 nearly all Ireland. 



[P. alba (Lion.) and P. nigra (Linn.) are frequently seen 

 in plantations and in the vicinity of houses, but are not 

 wild.] 



MTRIGA Linn. 

 1. M. Gale (Linn.) — Dutch Myrtle. 

 Districts 123456789 10 11 12 

 Lat. 51°-56°. Throughout Ireland. 

 Type in Great Britain, British. 



Bogs and moory ground ; frequent. Fl. May. 



BETULA Linn. 

 1* B. alba (Linn.) — Common Birch. 

 Districts 123456789 10 11 12 

 Lat. 51°-56°. Throughout Ireland. 

 Type in Great Britain, British. 



Heaths, moors, woods, &c. ; frequent. Fl. April, May. 

 Var. p glutinosa (B. glutinosa Fries). 



Marshes in Barry's-court (Dr. Power) Flor. Cork. Near 

 the lake at Blarney ; /. C. 



ALNUS ToUrn. 

 1. A. glutinosa (Gaert.) — Alder. 

 Districts 123456789 10 11 12 

 Lat. 51°-56°. Throughout Ireland. 

 Type in Great Britain, British. 



Wet places and river-sides ; common. Fl. March. 



Var. P incisa. 



12. Black Mountain, near Belfast ; Mr. S. A. Stewart. 



QUERCUS Linn. 

 1. Q. Rotaur (Linn.) — Oak. 

 Districts 1 2 3 4 5 6 7 8 9 10 11 12 

 Lat. 51°-56°. Throughout Ireland. 

 Type in Great Britain, British. 



Woods, glens, and rocky places ; common. Fl. April, May. 



Var. p sessiliflora (Salisb.) 



Apparently rare and local in Ireland. — 12. Observed by 



