148 POACEAE 
7. Eragrostis major Host. Ill-scented. Stems 1.5-6 dm. tall, at first erect, finally 
decumbent and much branched : leaf-blades 5-18 cm. long, 2-6 mm. wide, flat: panicle 
5-15 em. long, its branches spreading or ascending: spikelets 8-35-flowered, 5-16 mm. 
long and about 3 mm. wide, flat, the flowering scales obtuse, 2-2.5 mm. long, the lateral 
nerves prominent. [. megastachya Link. ] 
Ineultivated and waste places, nearly throughout North America. Naturalized from Europe. 
Summer and fall. SKUNK GRass. 
8. Eragrostis làgeus Nees. Stems tufted, slender, 2-3 dm. tall: leaf-sheaths, at 
least the lower ones, papillose-hirsute with long spreading hairs ; blades erect, papillose- 
hirsute with long spreading hairs, 3-9 cm. long, 1.5-3 mm. wide: panicle 1-2 dm. long, 
its branches long and ascending: spikelets 3-7-flowered, 3.5—4.5 mm. long, 1.3 mm. wide. 
In dry soil, southern peninsular Florida. Also in Mexico and South America. Spring and summer. 
9. Eragrostis curtipedicellàta Duckl. Stems 1.5-9 dm. tall, erect, rigid : leaf- 
sheaths overlapping, pilose at the summit ; blades 5-20 cm. long, 2-4 mm. wide, rough 
above: panicle 1-3 dm. long, the branches widely spreading: spikelets 5-12-flowered, 
3-6 mm. long, the flowering scales about 1.75 mm. long, the lateral nerves prominent. 
Qn prairies, Kansas to Texas. Summer and fall. 
10. Eragrostis pectinàcea ( Michx.) Steud. Stems 3-8 dm. tall, rigid : leaf-sheaths 
overlapping, glabrous or pubescent, the upper one often enclosing the base of the panicle ; 
blades 1-3 dm. long, 4-8 mm. wide, rough above: panicle 1.5-6 dm. long, purple or 
purplish, its branches widely spreading or the lower ones reflexed, strongly bearded in the 
axils: spikelets 5-15-flowered, 3-8 mm. long, the flowering scales about 1.75 mm. long, 
their lateral nerves very prominent. 
In dry usually sterile soil, New Hampshireto South Dakota, Florida and Texas. Summer and fall. 
11. Eragrostis refrácta (Muhl.) Scribn. Stems 3-9 dm. tall, slender : leaf-sheaths 
overlapping, glabrous ; blades 1-3 dm. long, 2-4 mm. wide, rough above and villous to- 
ward the base: panicle 2-5 dm. long, its slender branches finally widely spreading, the 
axils often bearded : spikelets 6-25-flowered, 5-12 mm. long, the flowering scales acumi- 
nite, 1.5-2 mm. long, the lateral nerves prominent.  [ E. campestris Trin. ] 
In moist soil, Delaware and Maryland tozFlorida and Texas. Summer and fall. 
12. Eragrostis Bllióttii S. Wats. Stems tufted, firm, erect, 4-10 dm. tall: leaf- 
sheaths glabrous ; blades 4 dm. long or less, 3-5 mm. wide, smooth beneath, rough above, 
long-acuminate: panicle diffuse, 2-5 dm. long, its long slender branches finally widely 
spreading or ascending: spikelets 6-13-flowered, 5-10 mm. long, the flowering scales 
1.75-2 mm. long, the lateral nerves prominent. [ÆE. nitida El] 
In dry soil, South Carolina to Florida and Louisiana. Fall. 
13. Eragrostis trichódes ( Nutt.) Nash. Stems 6-12 dm. tall: leaf-sheaths overlap- 
ping, pilose at the throat; blades 1.5-7 dm. long, 2-4 mm. wide, attenuate into long 
slender tips: panicle 2-7 dm. long, narrow and elongated, the branches capillary, the lower 
axils sometimes bearded : spikelets usually pale, or sometimes purple-tinged, 3-10-flowered, 
5-9 mm. long, the flowering scales acute, the lower ones 2.5-3 mm. long, their lateral nerves 
manifest. 
In dry sandy soil, Ohio and Illinois to Nebraska, Arkansas and Texas. Summer and fall. 
14. Eragrostis símplex Scribn. Stems densely tufted, ascending, 2-5 dm. tall, rather 
stiff : leaf-sheaths and blades usually sparsely pubescent, the latter erect or ascending, 
7-10 cm. long and 2-4 mm. wide: panicle 1-2 dm. long, its branches stiff and widely 
spreading, usually 2-4 cm. long: spikelets 12-40-flowered, 5-17 mm. long, 1.6-2 mm. 
wide. [E. Brownei Chapm., not Nees. ] 
In waste places and in ditches, Florida. Summer and fall. 
15. Eragrostis secundiflora Presl Stems tufted, 1-9 dm. tall: leaf-blades 3 dm. 
long or less, 2-4 mm. wide : panicle 4-15 cm. long, its branches short and erect : spikelets 
crowded and clustered, 12-20-flowered, 6-14 mm. long, 3-4 mm. wide. [E. orylepis Torr.] 
In sandy soil, Missouri and Kansas to Mississippi and Texas. Alsoin Mexico. Summer and fall. 
16. Eragrostis Beyríchii J. G. Smith. Stems tufted, 1-5 dm. tall: leaf-blades 
2 dm. long or less, 1-2 mm. wide, involute when dry: panicle 3-20 em. long, its branches 
short and erect : spikelets crowded and clustered, 12—42-flowered, usually 1-2 em. long and 
about 5 mm. wide, the flowering scales about 4 mm. long, acuminate, in side view cuneate. 
Insandy places, Texas. Alsoin Mexico. Summer. 
17. Eragrostis ciliàris (L.) Link. Annual. Stems densely tufted, erect or ascend- 
ing, slender, 1.5-4 dm. tall, often branching : leaf-sheaths usually ciliate on the margin 
and with a tuft of long hairs at the apex ; blades flat, ascending, 2-8 cm. long, 2-4 mm. 
wide: panicle spike-like, often interrupted below, 3-10 cm. long, its branches short and 
