GRASS FAMILY. 103 
7. Andropogon Elliottii ae Elliott’s Beard-grass. (Fig. 222.) 
ae Elliottti Chapm. Fl. S. States, 581. 
Culms erect, 1°-3° tall, smooth, simple or 
sparingly branched above, branches strongly 
bearded at the upper nodes. Sheaths glabrous 
or loosely villous, the lower narrow, the upper 
elongated, inflated, imbricated; basal leaves 
about one-half as long as the culm, smooth, 
14//-1%4’’ wide, those of the culm filiform or 
narrowly linear, 2/-10’ long, 14’/-1/’ wide; 
in pairs, 1/-2’ long, loose, finally long-exserted 
on filiform peduncles; rachis slender, flexuous, 
its joints and the pedicels pubescent with long 
spreading silky hairs; outermost scale of the 
sessile spikelet 114//-2’’ long, scabrous on the 
keel; awn 6//-9’ long, scabrous; pedicelled 
spikelet a minute scale or wanting. 
In dry or moist places, Pennsylvania to Florida 
and Texas. Aug.-Sept. 
8. Andropogon Torreyanus Steud. ‘orrey’s Beard-grass. (Fig. 223.) 
Andropogon glaucus Torr. Ann. Lyc. N. Y. 1: 153. 
1824. Not Muhl. 1817. 
Andropogon Torreyanus Steud. Nomencl. Ed. 2, 
93. I841. 
Andropogon Jamesii Torr. Marcy’s Rep. 302. 1853. 
Andropogon saccharoides var. Torreyanus Hack. 
in DC. Monog. Phan. 6: 495. 1889. 
Culms erect, 114°-3%° tall, simple or 
branched, glabrous, the nodes naked. Sheaths 
smooth and glabrous, more or less glaucous; 
leaves 3/-7’ long, 2//-3/’ wide, long-acuminate, 
smooth ga glabrous towards the base, scabrous 
on margins and at the apex, glaucous ; spikes 
1/-114’ long in a terminal long-exserted panicle 
2/-4’ long; joints of the rachis with a thin 
translucent median line ; outermost scale of ses- 
sile spikelet 114’/-2/’ long, about equalling the 
terminal hairs of the rachis-joints, lanceolate, 
acute, pubescent at base with long silky hairs ; 
awn 4//-8/’ long. spiral, bent, scabrous; pedi- 
celled spikelet reduced to a single narrow scale. 
In dry soil, Kansas to Arizona and Mexico. 
Aug.—Sept. 
5- CHRYSOPOGON ‘Trin, Fund. Agrost. 187. 1820. 
Generally tall grasses, ours perennials, with long narrow flat leaves and terminal pani- 
cles. Spikelets in pairs or 3’s, one sessile and perfect, the lateral pedicelled, staminate, 
empty, or reduced to the pedicel only. Perfect spikelet consisting of 4 scales, the two 
outer indurated and shining, the inner hyaline, the fourth awned and subtending a palet and 
perfect flower, or the palet sometimes wanting. Stamens 3. Styles distinct; stigmas plu- 
mose. Grain free. [ Greek, referring to the golden-yellow hairs on the spikelets. ] 
About 20 species, in temperate and tropical countries. 
