DACTYLIS. 



275 



Analysis. — The student will analyze throughout as we 

 have done in Spear-grass, making special note of the points 

 of difference in the two plants, such as the following. 



The Orchard-grass 

 is rough to the touch 

 — scabrous. The 

 leaves and even the 

 sheaths are decided- 

 ly keeled (carinate, 

 or boat-shaped). 



The ligule is ex- 

 cessively large, and 

 split or bifid. 



The branches of 

 the panicle are sin- 

 gle. 



The spikelets are 

 collected in dense, 

 one-sided (secimd) 

 clusters. While 

 closed they are lance- 

 olate, 2-3" long, 

 about 4 - flowered, 

 with the flowers a 

 little separated on 

 the rachis. The 2 

 glumes and the lower 

 pale are loiigh-ciliate 

 (with a row of short 

 hairs) on the keels, 

 and narrowed to 

 an awn-like point. There are 3 stamens, 2 feathery stigmas, 

 aod a lanceolate grain free from the pales. 



Fig. LXXni— Dactylis glomerata : 1, a spikelet 

 with 2 glumes, 4 flowers and 1 rudiment ; 2, a flower. 



