PAN1CE.E. 109 



the xunniiit ; 2)(dc(t offer/ih'jhire/ (jihlous above. Stem .shrubby, 

 variable. 



One species 74. 



1. P. fiUforme L. Sp. PI. 57 (1753). Pcu^pahim fiUfonne 

 Fluegge, Gram. Mouog. 139 (1810). Digitaria fiUformis Muhl. 

 Gram. 131 (1817). Sijntherisma villosa AYalt. Fl. Car. 77 (1788), 

 teste Kuuth. 



Culms very slender, upright, much branched below, 30-70 cm. 

 high. Lower sheaths hairy ; blades smooth, 4-22 cm. long, 3 mm. 

 wide. Spikes 2-8, erect, approximate, 4-14 em. long, the rachis 

 filiform, triangular, flexuose. Spikelets in pairs or threes ; in the 

 former case the pedicel of one is about its own length, of the other 

 more than twice as long; first glume minute or obsolete, second and 

 third thin, clothed with minute hairs with enlarged tips, the former 

 half or two-thirds as long as the spikelet, 3-nerved, the longer 7- 

 nerved, fourth and palea shorter, dark brown. 



New Jersey, Scribne?' 3590, Beal for M. A. C. ; Georgia, 

 Cooley ; Mexico, Palmer 454, 502. 



Florida, Texas, and Mexico. 



2. P. Simpsoni (Vasey). P. sangifinale L. var. Sim^jsoni 

 Vasey, Contrib. U. S. Nat. Herb. 3: 25 (1892). 



Culms branching and rooting at the lower nodes, more or less 

 compressed, 60-120 cm. high. Sheaths about the length of the 

 internodes, softly pubescent with hairs from glandular bases; ligule 

 ciliate, about 1 mm. long ; blades flat, slightly pubescent, 10-15 

 cm. long, 4-6 mm. wide. Spikes 8-10, digitate or approximate, 

 spreading. 12-15 cm. long, the rachis slightly flexuose, flattened, 

 0.3-0.4 mm. wide. Spikelets in pairs, one subsessile, the other 

 raised on a pedicel half or two-thirds its length ; empty glumes 2, 

 subequal, a little longer than the floret, smooth, linear, 3.2 mm. 

 long, almost obtuse, when spread, 7-nerved ; floral glume obscurely 

 3-nerved. Anthers linear. 2 mm. long. 



Florida (Manatee). J. H. Simpson in 1890 for U. S. Dept. 

 Agricul. 



3. P. setigerum Beauv. Fl. Owar. 1. t. 49 (1804). EcliinocJiloa 

 setigera Beauv. Agrost. 53 (1812). 



