88 AGROSTIDEAE 



5. Agrostis alba L. Red-top. This grass grows well in 

 the higher mountains at elevations of more than 7000 feet in wet 

 soils. It has been introduced at various places and escaped, so it 

 is now found in higher wet meadows and beside streams in tha 

 Transition Zone and higher. Variety vulgaris is a form with a 

 more spreading panicle. 



Agrostis rosei Hitehc. is a rare species collected but once 

 in the extreme southwestern corner of the State at Cloverdale. 



36. CALAMAGROSTIS Adans. 



Panicle open, the lower branches wide spread- 

 ing, often drooping; leaf blades flat; callus 

 hairs copious, almost equaling the glume. 1- C canadensis. 



Panicle more contracted, lower branches not 



drooping; leaf blades involute: plant with 2. C. hyperborea 

 many stems in a cluster. americana. 



1. Calamagrostis canadensis (Michx.) Beauv. Found only 



in the high mountains at the northern end of the State in the Trans- 

 ition Zone. 



2. Calamagrostis hyperborea americana (Vasey) Kearney. 



Known in New Mexico from a single locality in the mountains at the 

 northern end, in the Canadian Zone. 



37. CALAMOVILFA Hack. 



1. Calamovilfa gigantea (Nutt.) Scribn. and Merrill. A 

 single New Mexico specimen without definite locality is in th© 

 National Herbarium but it is reported from New Mexico in the 

 original description. 



2. Calamovilfa longifolia (Hook.) Hack. This plant also 

 has only been collected once on the very boundary of the State 

 in the northeast corner. 



