Monocotyledons 93 



9. Avena pubescens (Downy Oat-grass). 

 Ravine of Sundibanks. (Beeby in Scot. Nat. 

 1889-90.) 



A. strigosa (Bristle Oat). Not uncommon 

 in apparently wild localities, but being the 

 principally cultivated oat is likely not truly 

 indigenous. 



A. fatua (Wild Oat). Cornfields, rather 

 local ; chiefly in Northmaven, and Burrafirth, 

 Unst. 



10. Arrhenatherum avenaceum (False Oat). 

 Fields. Not frequent. 



1 1. Phragmites communis (Common Reed). 

 Loch to the north of Ronas Hill. 



12. Cynosurus cristatus (Crested Dog's-tail). 

 Dry pastures, especially on limestone soil. 



C. echinatus (Rough Dog's-tail). " I 

 gathered about eight specimens of this rare 

 plant (not elsewhere found in Scotland) near 

 the middle of the island of Bressay, about 

 three hundred yards on the south side of the 

 road going to Noss, in the beginning of 

 September 1840. In 1843 I also found three 

 specimens near the same station." (Edmond- 

 ston.) 



13. Molinia ccerulea (Purple Molinia). 

 Dry, hilly pastures. 



