127 



Fig. 423. Stipa avenacea Linn. Sp. PL 78, {S. barbata Michx.) 

 Black Oat-grass. — A smooth, erect perennial 3 to 7.5 pin. 

 high, with involute, filiform leaves and open, few-flowered pani- 

 cles 10 to 16 cm. long. Spikelets 8 to 10 mm. long. Awn 3 to 5 

 cm. long.— Dry open woodlands, etc., Rhode Island to Ontario 

 and Wisconsin and southward to Florida and Mississippi. April- 

 July. 



