TRIANDRIA, DIGYNIA. 41 



Agrostris scabra. Willd. 



This beautiful grass is very common on the margins of, and 

 ro;uU through \vo<h1s, and flowers two months later than the 

 preceding. All the specimens I have collected, are taller than 

 described by Dr. Muhlenberg. Perennial. July to October. 



38. Leersia, Suartz, Gen. pi. 105. (Granxinex. ) 



Calix 0. Corolla 2-valved, closed : valves 

 compressed, boat-shaped, without awns. 

 (Stamens 1, 2, 3, and 6.) Nutt. 



1. L. panicle loose, with scattered branches, small ; virgiuiot; 

 flowers appressed ; monandrous, scabrous ; the 



keel of the glumes sparingly ciliate. Elliot. 

 L. oryzoides, Swartz. 20. 



Virginian Rice-grass. JV/iite-grass. 



About two or three feet high, very slender. On borders of 

 swampy woods and near shaded rivulets, in Jersey ; also in the 

 woods back of the Blue-bell Inn, Darby-road. Rare. Peren- 

 nial. August. 



2. L. culm 5 feet high jointed very scabrous, joints oryxcmki, 

 pubescent. Leaves lanceolate nerved ciliated 

 scabrous- Ligula sbort retuse. Sheath striated, 

 carina hispid backward. Panicle diffuse ; branch- 

 es of the panicle spreading, the lower ones in 

 fours, the rest in pairs and solitary, inflated at the 



base, flexuose. Pedicels adpressed. Cor, glume 

 bivalved compressed. Stam. 2 and 3 white. 

 Pist. 2. 



Cut -grass • Sickle-grass. 



On the margins of ditches, field-drains, and rivulets, in Jer- 

 and on this side of the Delaware. Not very common. 

 Perennial. August. 



5* 



