GENERA OF GRASSES OF THE UNITED STATES. 
243 
Beal 1 applied the name Chainaeraphis R. Br. to American species of Chae- 
tochloa, but that is an Australian genus in which the articulation is below the 
spikelet-bearing branches, as in Pennisetum. 
One group of this genus, section Ptychophyllum, has broad, often 
plaited, blades and loose or open panicles, the bristles solitary and 
at the base of only the uppermost spikelets on the short branchlets. 
Tli is section has usually been referred to Panicum, but shows a closer- 
relationship to Chaetochloa. Two species of this group, both per- 
ennials, are cultivated in greenhouses or in the open in the Tropics 
for ornament, chiefly on account of the broad plaited blades that 
resemble those of young palms. Chaetochloa sulcata (Aubl.) Hitchc. 
{Panicum sulcatum Aubl.) has narrow, rather dense panicles, 1 to 2 
feet long, and blades about 2 inches wide. Chaetochloa palmifolium 
(Willd.) Hitchc. and Chase has large open panicles and broader 
blades. This has been known in cultivation as Panicum pHcatum y 
but is not P. plicatum Lam. It is sometimes called palm-grass. 
Of the species of Chaetochloa proper 2 (Setaria Beauv.) several 
are weeds in cultivated soil. Two annual species are common in the 
eastern United States, where they are known as foxtail or pigeon 
grass. Chaetochloa viridis (L.) Scribn., green foxtail, has a green, 
somewhat pointed head, with untwisted blades. Chaetochloa lutes- 
cens (Weigel) Stuntz (Setaria glauca of most authors, not Panicum 
glaucum L.) (fig. 148), yellow foxtail, has cylindric yellow obtuse 
heads and blades twisted in a half spiral so that toward the end the 
upper surface is beneath. 
Another annual species common in waste places is Chaetochloa 
verticillata (L.) Scribn., in which the bristles are backwardly rough- 
ened, the heads thus sticking readily to clothing. Chaetochloa geni- 
culata (Lam.) Millsp. and Chase is a perennial species resembling 
yellow foxtail. This is common in the Southern States and through- 
out the Tropics. Chaetochloa magna (Griseb.) Scribn., a robust 
annual as much as 9 feet high, with a dense panicle or head as much 
as a foot long and 2 inches in diameter, is found in marshes from 
Maryland to the West Indies. 
Chaetochloa macrostachya (H. B. K.) Scribn. and Merr. (here- 
tofore commonly confused with the South American C. compos ita 
(H. B. K.) Scribn.), is of some importance as a range grass from 
Texas to Arizona. It is a pale perennial, with somewhat pointed 
spikelike panicles. The two annuals, C. viridis and G. lutescens, are 
often sufficiently abundant to furnish considerable forage. 
The most important species of the genus is Chaetochloa italica (L.) 
Scribn. (Setaria italica Beauv.). This is called millet, or, to dis- 
tinguish it from other kinds of millet, foxtail millet. Millet is an 
brasses N. Amer. 2: 150. 1896. 
2 The genus was revised by Scribner and Merrill, U. S. Dept. Agr., Div. Agrost. Bull. 
21. 1900. 
