MANUAL OF THE GRASSES OF THE UNITED STATES 



581 



long, the capitellate hairs rather 

 stiff and appressed; fruit dark brown. 

 % (Has been confused with D. 

 panicea (Swartz) Urban.) — Moist pine 

 barrens and open ground, southern 

 Florida; Cuba, Puerto Rico. 



12. Digitaria gracillima (Scribn.) 

 Fernald. (Fig. 838.) Perennial in 

 dense tufts; culms 60 to 100 cm. tall, 

 erect; lower sheaths appressed-villous; 

 blades elongate, 1 to 2 mm. wide, 



Figure 835. — A, Digitaria filiformis. Plant, X 1; 

 spikelet and floret, X 10. (Bissell, Conn.) B, D. 

 laeviglumis. Spikelet, X 10. (Type coll.) 



often involute, more or less flexuous; 

 racemes mostly 2 or 3, distant (rarely 

 as many as 5 and fairly approximate), 

 very slender; spikelets rather remote, 

 relatively long pediceled, about 2.3 

 mm. long, glabrous; first glume ob- 



Figure 834. — Digitaria simpsoni. Plant, X 1; spike- 

 let and floret, X 10. (Curtiss 6422, Fla.) 



Figure 836. — Digitaria villosa. Plant, X 1; spikelet 

 and floret, X 10. (Curtiss 5300, Fla.) 



