id 
Ix] “ SEEDS ” 155 
the other longer and sharply bent, inserted about the 
middle. 
Mierochloe, a rare northern grass, also comes here. 
AA Glumes connate below, hairy on the keels. 
Alopecurus pratensis. 
A. geniculatus. 
A, agrestis. 
Alopecurus is very characteristic, and should be carefully 
examined as a type. A. pratensis is a valuable grass and said 
Fig. 68. Alopecurus pratensis. a, ‘‘ seed,” nat. size, and b, c, ditto, x8; 
d, caryopsis, x7. The ‘‘seed” here consists of the two glumes, 
connate below and hairy on the keel and ribs, including the 
caryopsis enveloped in a single palea with a dorsal awn. Note 
remains of stigma in d. Nobbe. 
to be often adulterated with the undesirable A. agrestis, Holcus, &c. 
Arrhenatherum and Avena are easily distinguished by the basal 
hairs, rachilla, &c. 
