AGROSTIDEAE 85 



the ditch banks and in wet natural meadows. Agrostis hiemalis 

 is a native species of very slender grass a foot or so high 

 with numerous erect stems forming tufts six inches in 

 diameter and crowned by weak nodding panicles of small 

 spikelets on very slender branches. The grass occurs only 

 in the cool forests of the higher mountains, preferring a 

 cool rich soil and some shade. It is unimportant except as 

 it forms a small part of the summer pasture in such places. 

 Water Bent Grass (Agrostis stolonifera) and the very 

 similar species A. asperifoHa occur only in boggy or wet 

 places beside water holes, springs, creeks or along ditch 

 banks. They are of no importance economically. 



Two species of Calamagrostis come into the State 

 from the north being found in the cool forests of the high 

 mountain peaks of the northern part of the State, where 

 they are moderately common and add somewhat to the crop 

 of summer forage. 



31. POLYPOGON Desf. Beard Grass. 



Awn.s very long, concealing the spikelets. 1. P. monspeliensis. 



Awns shorter, not concealing the spikelets. 2. P. littoralis. 



1. Polypogon monspeliensis (L.) Desf. In wet soil beside 

 streams, ditches or springs in the Sonoran Zones, mostly the Lower 

 Sonoran. 



2. Polypogon littoralis (With.) Smith. Very similar to 

 the last and associated with it. 



32 CINNA L. 



I. Cinna latifolia (Trev.) Griseb. Has been collected once 

 in the Sandia Mountains where the seed was probably introduced 

 with garden seed. Normally lives in cold damp woods in the extreme 

 eastern and northeastern part of North America. 



