PANICEiE. 95 



Florida to Texas in saline swamps. 



28. P. notatum Fliigge, Gram. Monog. 106 (1810). 



Culms 50-70 cm. higli, ascending from a stout root-stock. 

 Leaf -blades narrow, smooth. Spikes 2, exserted, diverging, 7-10 

 €m. long, aj^jiroximate, both sessile, rachis flat on the back, 1 mm. 

 wide. Spikelets smooth, single, in two rows, those in the same 

 row in the middle of the spike overlapping one fourth of their 

 length, ovate or oval, obtuse, 3.5 mm. long; first glume thin, with 

 two prominent nerves toward each margin, second firmer, 5-nerved. 



From ballast found at Camden, N. J., coll. by Scribner. 



Near the Gulf coast, West Indies, Mexico, Brazil. 



29. P. prsecox Walt. Fl. Car. 75 (1788). P. lentiferum Lam. 

 Illustr. 1:175 (1791). 



Culms simple, smooth, 60-120 cm. high, miicli exserted. Leaf- 

 blades smooth or hairy below, 15-30 cm. long, 15 mm. wide. 

 Spikes 3-6, -4-6 cm. long, separated about their own length from 

 each other, rachis 1 mm. wide. Spikelets single, in two rows, 

 those in a row overlapping for about half their lengtli, or some of 

 the pedicels branching, then 3-4 rows, compressed, nearly orbicular, 

 or broad oval, 2.2-3 mm. long, first and second glumes 3-nerved, 

 or two outer obscure nerves, making 5 in each. 



Florida, A. H. Curtiss 3569. Southern States. 



30. P. Iseve Michx. Fl. Bor. Am. 1:44 (1803). 



Culms upright or decumbent, simple, 60-120 cm. high. 

 Sheaths compressed ; blades flat, smooth, 30 cm. long, 7 mm. wide. 

 Spikes 3-5, 5-10 cm. long, apj^roximate, usually widely diverging, 

 rachis about 1 mm. wide, flexuose or straight. Spikelets single, in 

 two rows, little if at all overlapping, broad-oval, 3 mm. long, first 

 and second glumes smooth, 5-nerved. Nearly allied to P. Flori- 

 danuin Michx. Pa, (Piiila.), Scribner 3570. 



Moist soil ; South New England to Florida and Texas. 



31. P. giganteum Baldwin, ined.; see Bull. Torr. Club, 13:166 

 (1886). 



Culms simple, 90-150 cm, high, exserted. Leaf-blades flat, 

 smooth, erect, 35-50 cm. long, 2 cm. wide. Spikes 3-4, 4-5-10 

 cm. apart, spreading, 15-20 cm. long, rachis stout, round on the 



