746 Proceedings of the Royal Irish Academy. 



Aira ccespitosa (Linn.) — Twelve Bens, 2250. Common in tlie Mayo 



mountains at high levels. 

 Agrostis vulgaris (With.) — Twelve Bens, 2390. 

 Festuca ovina (Linn.) — Summits of Nephin and Croaghpatrick. Twelve 



Bens, 2150. 



Summit or Nephin. 

 2640 feet. 



Galium saxatile (Linn.) — Summit of Croaghpatrick. Twelve Bens, 

 2390 ; Leckavrea, 2000. Abundant. 



Empetrum nigrum (Linn.) — Summit of Croaghpatrick. Corslieve, 

 2250; twelve Bens, 2350. Common. Below 300 feet on 

 Achill and Birreencorragh. One of the few species that thrives 

 on quartzite. 



Armeria maritima ("Willd.) — Mweelrea, 2640. Summit of Croagh- 

 patrick. Twelve Bens, 2250. Ceases as a mountain plant. 

 Croaghpatrick, 1500 ; Curraun Achill, 1200. Ee-appearing 

 abundantly at sea level, and thriving on siliceous rocks. 



Aira flexuosa (Linn.) — Mweelrea, 2600. Summit of Croaghpatrick. 

 Twelve Bens, 2390. Common on moorlands. 



Lastrcca dilatata (Presl.) — Mweelrea, 2380 ; Twelve Bens, 2390. 



Lycopodium selago (Linn.) — Twelve Bens, 2390. Sea level, or near it 

 at Doo Lough. Ceases usually at about 1200 to 1000 feet on the 

 mountains as on Nephin. Seems to prefer siliceous rocks. 



MWEELEEA. 



2600 feet. 



Sedum rhodiola (D. C.) — Not seen elsewhere nearly so high. Descends 

 occasionally to sea level ; but usually found in alpine situations 

 and with alpine plants. Croaghpatrick, 1740 to 1570; Corslieve, 

 1600; Achill, 1430 to sea level; Mweelrea, 1430 to 500; Cor- 

 cogemore, 1800 ; Twelve Bens, 1700 to 1470, and at 1170. 



Bolidago virgaurea (Linn.) — Achill, 1730 ; Twelve Bens, 2250 ; Maam- 

 trasna, 2120; Leckavrea, 2000. 



Campanula rotimdifolia (Linn.) — Ben Gorm, 2150; Croaghpatrick, 

 1900; Corcogemore, 1900; Maamtrasna, 2000. Not unfrequent 

 as a mountain plant, especially in rocky ground of a siliceous 

 nature. Descending to 550 feet on cliffs above Doo Lough ; but 

 flowers sparingly. 



Ifelampyrum pratense (Linn.) (var. montanum.) — Nephin, 2300 ; Cor- 

 slieve, 2250; Croaghpatrick, 1900; Achill, 1730. Bather thinly 

 distributed, and not met with at low levels. 



Plantago maritima (Linn.) — Curraun Achill, 1200; Achill, 2200; 

 Twelve Bens, 1700. Barely occurring inland at low levels. 

 At the base of Nephin in Boughadoon, by the Glenlaur river. 



