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apex. Leaves flattened. Panicles branched. 
Spikelets pedicellate. 
1. H. tanatus L.—2£. Common. Summer. 
21. Phragmites Trin. exp. 
Spikelets 3—6-flowered; flowers distichous, 
somewhat remote; the lower one 4, the rest 3. 
Glumes 2, carinate, acute; the upper larger. 
Palets 2; lower elongate, subulate, upper 2- 
carinate. Ovary sessile; caryopsis free.—2{. 
Aquatic. Leaves broad, flattened. Panicles 
diffused. 
1. P. communis Trin.— Common on river 
banks. Summer. 
22. Dactylis L. ORCHARD GRASS. 
Spikelets 1-sided, 2-7-flowered. Glumes 2, 
carinate, mucronate aristate. Palets 2; upper 
2-carinate, lower 5-nerved, mucronate aristate; 
carina ciliate. Ovary sessile. Caryopsis free. 
2f. Leaves carinate. Panicles glomerate, 1- 
sided. 
1. D. ctomerata L. 
Introduced from Europe as a fodder-grass. 
23. Keeleria Pers. 
Spikelets 2-7-flowered. Flowers distichous. 
Glumes 2, carinate, awnless, unequal. Palets 
2; lower enlarged, upper 2-carinate, 2-cleft. 
Caryopsis terete, free. Leaves flattened. Pani- 
