[Andropogon drummondii Nees ex Steud., moreSorghum bicolor var. drummondii (Nees ex Steud.) Mohlenbrock, Sorghum bicolor var. sudanense (Piper) A.S. Hitchc., Sorghum sudanense (Piper) Stapf, Sorghum vulgare var. drummondii (Nees ex Steud.) Hack. ex Chiov., Sorghum vulgare var. sudanense A.Chase]
Plants annual. Culms to 4 m, relatively stout.
Rames usually tardily disarticulating, mostly with 3-5 nodes. Sessile
spikelets 5-6 mm, lanceolate to elliptic. Caryopses not exposed at
The hybrids treated here as Sorghum bicolor subsp. drummondii
are most common in the Eastern Hemisphere, but a few are cultivated in
the United States. Among these are the plants known as 'chicken corn'
and 'Sudangrass' [= S.
sudanense (Piper) Stapf] (de Wet 1978).