277 



Fig. 271. POA CHAPMANTANA Scribn. Bui. Torr. Bot. Club, 21 : 38. 1894. 

 {Poa cristafa Chapm. Fl. So. U. S. 5G2. 1860, not Walt. 1788.)— A low. CEespitose 

 annual 1-2 dm. (l'-8') high, Avith ascending, flat leaves and usually narrow- 

 panicles 2-8 cm.(l'-3') long. Sheaths close, mostly at the base of the culm; ligule 

 1mm. iV) long, truncate; leaf-blades 1-2 cm. (i'-l') long, 1 mm. (i") Avide or 

 less, .smooth. Spikelets (a, 6) 3 to 7 floAvered 2.5-3 mm. (li"-li") long; empty 

 glumes about equal, 3-nerved, acute; floAvering glumes (c) Avebbed at the base, 

 obtuse, 3-nerved, sometimes obscurely 5-nerved, the prominent nerves some- 

 times pilose for three-fourths their length, the keel Avith a prominent crest-like 

 fringe.— Dry, .'^andy .soil, .southern Illinois to Mississippi and Georgia. April, 

 May. 



Allied to P. (umua, but more strict in habit of groAvth. 



