GRASS FAMILY. , 9 I 



10. Eragrostis refracta (Muhl.) Scribn. Meadow Kragrostis. (Fig. 437.) 



Poa refracta Muhl. Gram. 146. 1817. 



Eragrostis campeslrisfrin. Bull.Acad. Sci. St. Petersb. 



i : 70. 1836. 

 Jlni'jrostis refracta Scribn. Mem. Torr. Club, 5: 49. 



1894. 



Culms i-3 tall, erect, slender, simple, smooth 

 and glabrous. Sheaths overlapping, smooth and 

 glabrous; ligule a ring of short hairs; leaves $'-12' 

 long, i // -2 // wide, smooth beneath, rough above, 

 and villous toward the base; panicle S'-ao' long; 

 branches slender, 4 / -io / long, at length widely 

 spreading, the axils often bearded; spikelets 6-25- 

 flowered, 2}4 // -~6" long, on pedicels shorter than 

 themselves; empty scales acute, the first somewhat 

 shorter than the second; flowering scales very 

 acute, 3 4 // -i // long, the lateral nerves prominent. 



In moist soil, Delaware and Maryland to Florida, 

 west to Texas. Aug. -Sept. 



11. Eragrostis trichodes (Nutt.) Nash. Hair-like Eragrostis. (I 



Poa trichodes Nutt. Trans. Am. Phil s-,. n 5: 146. 



1833-37- 

 Eragrostis ten-. 



Not Steud. 1855, nor Poa Unit: 

 Eragrostis trichodes Nash, Bull Turr. Clnb, 21: 465. 



1895- 



Culms 2-4 tall, erect, simple, smooth and gla- 

 brous. Sheaths overlapping, smooth, pilose at the 

 throat; ligule a ring of very short hairs; leave* 

 6 / -28 / long, i // -2 // wide, smooth beneath, slightly 

 scabrous above, attenuate into a long slender 

 tip; panicle 9' -26' in length, narrow and elong- 

 ated, the branches erect or ascending, capillary, 

 subdividing, somewhat flexuous, 3'-;' long; lower 

 axils sometimes bearded; spikelets usually pale, 

 3-io-flowered, 2#"-4)4" long; lower scale* very 

 acute, about equal; flowering scales acute, the lower 

 ones \}&"-iyi" l n g. their lateral nerve* manifest. 



In dry sandy soil, Ohio and Illin^ 

 south t<> Tennessee and Texas. Ang.-SepL 



12. Eragrostis secundiflora Presl. Clus- 

 tered Eragrostis. (Fig. 439-) 



Poa interrupta Nutt. Trans. Am. Phil. Soc. (11.)$: 146. 



I833-37- Not Lam. 1791. 



Eragrostis secundiflora Presl, Rel. Haenk. i: 276. 1830. 

 Eragrostis oxylepis Torr. Marcy's Report, 269. 1.^54. 



Smooth and glabrous, culms (>'-T, tall, erect, simple. 

 Sheaths shorter than the internodes; ligule a ring of 

 hairs; leaves 2 / -i2 / long, i // -2 // wide; panicle i#'-6' 

 in length, the branches J^'-i.^' long, erect or ascend- 

 ing; spikelets crowded or clustered, sessile or nearly so, 

 strongly flattened, 8-4o-flowered, $"-10" long, i"- 

 2 l / 2 ff wide; lower scales acute, about equal; flowering 

 scales \y t "-i.'%" long, acute, usually purple-bordered, 

 the lateral nerves prominent. 



In dry soil, Kansas and Missouri, south to Texas and 

 Louisiana. Aug.-Sept. 



13 



