116 NORTH AMERICAN FLORA [VoLuME 17 
12. Andropogon Bakeri Scribn. & Ball, Bull. U. S. Dep. Agr. 
Agrost. 24: 39. 1901. 
A tall tufted perennial. Stems stout, 8-12 dm. tall, much-branched above, the branches in 
3’s or 4’s, the lower internodes much compressed; leaf-sheaths longer than the internodes, 
glabrous or a little hirsute, the lower ones compressed, equitant; blades up to 4 dm. long, 4-7 
mmm. wide, flat, a little rough above; spathes 4-5 cm. long; racemes 1.5-3 cm. long, the rachis 
slender, the internodes shorter than the sessile spikelets, densely clothed with silky hairs 
longer than themselves; sessile spikelet linear-lanceolate, 5 mm. long, the callus barbed with 
hairs about 2 mm. long, the first scale with hispidulous keels, the keel of the second scale 
also hispidulous, the fourth scale acuminate, 2-toothed at the apex, bearing a slender straight 
awn 6-10 mm. long; pedicellate spikelet entirely wanting, the pedicel longer than the sessile 
spikelet and densely clothed with long white hairs. 
TYPE LOCALITY: Pine lands, Grasmere, Florida. 
DISTRIBUTION: Florida. 
ILLUSTRATION: Bull. U.S. Dep. Agr. Agrost. 24: f. 14. 
13. Andropogon Liebmanni Hack. Flora 68: 132. 1885. 
Andropogon macrothrix Fourn. Mex. Pl. Gram. 60. 1881. Not A. macrothrizx Trin. 1833. 
Andropogon Liebmanni raripilus Hack. in DC. Monog. Phan. 6: 413. 1889. 
Sorgum Liebmanni Kuntze, Rev. Gen. 792. 1891, 
Stems up to 7 dm. tall, branched above, the branches simple, rather stout, usually in pairs, 
sparsely barbed at the nodes; leaf-sheaths appressed-hirsute above; blades up to 3 dm. long, 
2-6 mm. wide, rough, the lower surface rather densely hirsute, the upper more sparsely so; 
spathes 3.5—5 cm. long; racemes in 4’s or 5’s, 2.5-3 cm. long, the internodes filiform, clothed 
with long hairs, those at the summit about twice as long as the internodes; sessile spikelet 
linear-lanceolate, 3-4 mm. long, the first scale entire, hispid on the keels, the calltus-hairs less 
than one half as long as the scale, the second scale densely hispid on the keel, the fourth scale 
2-toothed at the apex, bearing an awn about 1.5 cm. long, the column somewhat spiral at the 
base, much shorter than the subula; pedicellate spikelet 1-1.5 mm. long, the pedicel about 
equaling the sessile spikelet. ; 
TYPE LOCALITY: Near Chinantla, Oaxaca. 
DISTRIBUTION: Mexico. 
14. Andropogon Mohrii Hack.; Vasey, Contr. U. S. Nat. 
Herb. 3:11. 1892. 
Andropogon Liebmanni Mohrii Hack. in DC. Monog. Phan. 6: 413. 1889. 
Andropogon Mohrii pungensis Ashe, Jour. Elisha Mitchell Soc. 15: 114. 1898. 
Stems 8~15 dm. tall, branched above, the branches divided, densely barbed at the nodes; 
leaf-sheaths densely hirsute; blades 3 dm. long or less, up to 5 mm. wide, densely hirsute; 
spathes 4-5 cm. long, equaling or a little shorter than the racemes; racemes in 4’s, 3-4 cm. 
long, rather stout, the hairs at the summit of the internodes one and one half times as long 
as the sessile spikelets; sessile spikelet 4.5-5 mm. long, about twice as long as the internodes, 
the first scale bi-mucronate at the apex, hispid on the keels, the second scale hispid on the keel, 
the fourth scale with an awn 2-2.5 cm. long, slightly if at all twisted at the base; pedicellate 
spikelet wanting, or sometimes present as a small subulate scale, the pedicel usually a little 
shorter than the sessile spikelet. 
TYPE LOCALITY: In wet pine woods, near Mobile, Alabama. 
DISTRIBUTION : Washington County, North Carolina (according to Ashe); Georgiaand northern 
Florida to Louisiana. 
ILLUSTRATION : Bull. U. S. Dep. Agr. Agrost. 17: f. 314. 
15. Andropogon campyloracheus Nash, Bull. N. Y. Bot. 
Gard. 1: 431. 1900. 
Andropogon Elliott laxiflorus Scribn, Bull. Torrey Club 23: 146. 1896. Not A. laxiflorus 
Steud. 1854. 
Stems densely tufted, 4-8 dm. tall, the terminal internode much elongate and slender, 
the branches single; leaf-sheaths much exceeding the internodes, overlapping, those on the 
