MANUAL OF THE GRASSES OF THE UNITED STATES 



281 



Figure 548.— Distribution of 

 Sphenopholis nitida. 



distant, ascending, spreading in anthesis; spikelets 3 to 3.5 mm long; 

 glumes about equal in length, usually nearly as long as the first floret, 

 the first glume broader than in the other 

 species, the second broadly rounded at sum- 

 mit, at least the 

 second lemma 

 scabrous-papil- 

 lose. 01 — Dry 

 or rocky woods, 

 Massachusetts to 

 North Dakota, 

 south to Florida 

 and Texas (fig. 

 548). 



5. Sphenopho- 



lis filiformis 



p^ (Chapm.) Vasey. 



(Fig. 549.) Culms 

 erect, very slen- 

 der, 30 to" 60 cm 

 tall; blades slen- 

 der, lax, flat to 

 subin volute, 

 mostly less than 

 2 mm wide; pan- 

 icle slender, often 

 nodding, 5 to 15 

 cm long, the short 

 branches rather 

 distant, erect or 

 ascending; spike- 

 lets 3 to 4 mm 

 long, the two flo- 

 rets rather dis- 

 tant; second 

 glume broadly 

 rounded at sum- 

 mit, about 2 mm 

 long ; lemmas ob- 

 tuse to subacute, rarely with a short spreading awn ; the first smooth, 

 the second minutely roughened. % — Dry soil, Coastal Plain, North 

 Carolina to Florida, Tennessee, and eastern Texas (fig. 550). Occasional 

 awned lemmas, either the first or second, are found in some panicles. 



6. Sphenopholis pallens (Spreng.) Scribn. 

 (Fig. 551.) Culms erect, about 60 cm tall; 

 lower sheaths minutely pubescent, the upper 

 glabrous; blades flat, glabrous, 1 to 2 mm wide; 

 panicle narrow, nodding, loose, or somewhat 

 compact, 15 to 25 cm long, the branches ascend- 

 ing, the lower distant; spikelets about as in 

 S. intermedia, 2- or 3-flowered, 3 to 3.5 mm long; 

 second floret scaberulous, usually awned just 

 scabrous, geniculate, 1 to 2 mm long. % 



Figure 547 .—Sphenopholis nitida. 

 X l: glumes and florets, X 10. 

 1920, S. C.) 



Figure 549. — Spheno- 

 pholis filiformis. Pan- 

 icle, X 1; glumes and 

 florets, X 10. (Hitch- 

 cock 1044, Ala.) 



Figure 550.— Distribution of 

 Sphenopholis filiformis. 



below the apex, the awn 



(Eaton la arlstata Scribn. and Merr.) 



The type of Aba pallens Spreng. 



