170 =isc. PUBLICATION 243, U.S. DEPT. OF AGRICULTURE 
A common weed in fields, open ground, and waste places, tropical - 
regions of both hemispheres. To be found in probably all of the 
West Indian islands. In Cuba sometimes called “pata de gallina 
fina’’ (fine henfoot). 
3. Digitaria argyrostachya (Steud.) Fernald, Rhodora 22: 103. 1920. 
Pancum argyrostachyum Steud., Syn. Pl. Glum. 1: 40. 1854. Java. 
Syntherisma argyrostachya Hitche. and Chase, Contrib. U. S. Natl. 
erbim 18:629455 1917, 
Annual; culms erect or spreading, 10 to 60 cm tall; sheaths glab- 
rous; blades flat, 3 to 5 mm wide, sparsely pilose on the upper sur- 
face; racemes slender, erect or ascending, 
mostly 2 to 4, 4 to 10 cm long; spikelets 
2 mm long. 
A weed in cultivated soil, introduced 
in Jamaica. : 
4 JAMAICA: Cinchona, Harris 11271, 
11413; Mitchcock 9705. 
4, Digitaria serotina (Walt.) Michx., 
Kl Bor) Amersa: 465, US03: 
Syntherisma serotina Walt., Fl. Carol. 
76. 1788. South Carolina. 
Culms creeping and rooting, forming 
mats, the flowering ones ascending, 20 
to 30 cm tall; sheaths and blades pilose; 
racemes 3 to 5 on an axis about 1 cm 
long, 3 to 5 cm long, the rachis flat, a 
little less than 1 mm wide, the margins 
wider than the midrib; spikelets oblong- 
elliptic, minutely pubescent, about 1.5 
mm long (fig. 108). 
Sandy soil, Coastal Plain of the United 
States from Delaware to Miaississippi; 
FIGURE 108.—Digitaria serotina. Plant, also in western Cuba. 
LUCTRay: LOOSE Gals lao wR Cupa: Laguna Jovero, Shafer 10769. 
Habana, Hkman 1057, 11515; Léon 4332. 
5. Digitaria violascens Link, Hort. Berol. 1: 229. 1827. Brazil. 
Panicum violascens Kunth, Rév. Gram. 1: 33. 1829. 
Paspalum chinensis Nees, in Hook. and Arn., Bot. Beechey Voy. 
231 S36. Chime 
Paspalum minutiflorum Steud., Syn. Pl. Glum. 1: 17. 1854. Not 
P. minutiflorum Desv., 1831. . China. 
Syntherisma hellert Nash, Minn. Bot. Stud. 1: 798. pl. 44. 1897. 
Hawaii. | 
Syntherisma violascens Nash, in Brown, Acad. Nat. Sci. Phila. Proc. 
OL: 483.7 1:909; 
Digitaria chinensis A. Camus, Not. Syst. Lecomte 4: 48. 1923. 
Not D. chinensis Hornem., 1819. 
Syntherisma chinensis Hitche., Contrib. U.S. Natl. Herb. 22: 468. 
1922. 
Annual; culms decumbent and rooting at the base or sometimes 
erect, 30 to 60 cm tall; sheaths glabrous; blades glabrous, mostly 3 to 
6 mm wide; racemes mostly 2 to 5, sometimes 6 or 7,slender, ascend- 
