PAN1CE.E. 93 



first glume shorter than the floret, thiu, 3-uervecl, second equalling 

 the floret, 5-nerved. 



The above name is given on the authority of General Munro, 

 who had seen the plants of D. Garber. 



Florida, Garher 224, in the year 1877, now in the herbarium 

 of Harvard University. 



22. P. Boscianum Fliigge, Mouog. 170 (1810). P. purjjuras- 

 cens Ell. Bot. S. C. and Ga. 1 : 108 (1816). 



Culms decumbent or erect, 60-90 cm. high. Leaf-blades flat, 

 smooth or hairy at the base, often purple, 30 cm. long, 6-8 mm. 

 wide. Spikes 5-7, sometimes 10-20, not crowded, 5-8 cm. long, 

 rachis flat, 2 mm. wide. Spikelets smooth, obtuse, crowded in 

 2-4 rows, oval or obovate, 2.3 mm. long, first and second glumes 

 5-nerved, third and palea dark brown or black when mature. 



Xorth Carolina, U. S. Dept. Agricul. from McCarthy. 



North Carolina to Florida and Texas. There is considerable 

 doubt as to the correct name of the grass here described. 



23. P. distichium L. Ama3n. Acad. 5:391 (1759). 



Culms ascending, 20-00 cm. high, from a long creeping base, 

 extending beyond the upper sheath. Sheaths smooth; blades 

 linear-lanceolate, crowded below, fiat, glaucous, glabrous or rough 

 above, 4-12 cm. long, 2-4 mm. wide. Spikes 2, rarely 3, 3-9 

 cm. long, 1 sessile, the other on a short peduncle, rachis flat on 

 the back, 1-2 mm. wide. Spikelets siiigle in two rows (some- 

 times crowded in more than two rows), those in the middle of a 

 lineal line overlapping one fourth their length, oval, ovate, 3 mm. 

 long; on the fiat side sometimes a slender, 1-nerved glume, first 

 ordinary glume 5-nerved, second 3-nerved. 



Delaware, Caiiby ; Florida, Ctirtiss 3567 ; Texas, NealUyy 

 Scrihner 3567 from Tweedy; New Mexico, Vasey ; Arizona, 

 Pr ingle; Oregon, Howell; Mexico, Palme?- 24:3. 693. 



Virginia, south and west; also East India and Australia. 



24. P. lividum Trin. MS. Schlecht. in Linn. 26:383 (1853-5). 

 Culms branching below, 60-80 cm. high. Leaf-blades 12-20 



cm. long, 4 mm. wide. Spikes 4-10, 2-4 cm. long, approximate 

 or crowded, the whole 8-10 cm. long, rachis flat, 2 mm. wide. 



