HOW TO KNOW THE GRASSES 



44b. Spikelets with 1 empty lemma; leaf blades thin and flat, mostly 

 1 — 2 cm. wide. Fig. 79. 



Uniola latiiolia Michx. 



Perennial; producing rhizomes; plants 1 — 1.4 

 m. tall; panicles open and drooping, 10 — 20 

 cm. long. While similar to sea oats, this is 

 a woodland species of rich soil in the south- 

 eastern United States. It is highly ornamental 

 and suitable for growing in shaded borders 

 or wild gardens. Several other species of this 

 genus with smaller spikelets also occur in the 

 southeastern states. June — October. 



Figure 79 



45a. Spikelets 2 — 4 cm. long, in open panicles; lemmas awned or awa- 

 tipped between 2 teeth or below the apex 77 



45b. Spikelets usually 1 cm. or less long; lemmas awnless or tapering 

 into a short awn-tip 46 



46a. Spikelets on pedicels, in open or contracted panicles; lemmas 

 awnless; glumes not ciliate 104 



46b. Spikelets nearly sessile, in dense, one-sided tufts at the ends of 

 the few, long, stiff, panicle branches; glumes and lemmas ciliate 

 on the keels; lemmas pointed or short-awned. Fig. 80. 



ORCHARD GRASS 



Dactylis glomerata L. 



Perennial; tufted; plants 60 — 120 cm. 

 tall; herbage hght green; leaf blades 2 — 8 

 mm. wide. The panicle branches spread 

 only at flowering time. The plants grow 

 in large tussocks. They furnish both pas- 

 turage and hay, and this species is rather 

 important as a forage grass. It will toler- 

 ate partial shade. Introduced from Europe. 

 May — July. 



Figure 80 



44 



