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Comparison of Important Genera once in the Andropogon

  Pedicel cross-section upper lemma Inflorescence 1st glume cross-section
Andropogon semi-terete 0 to 1/4 cleft panicle: 2-5 racemose branches concave
Bothriochloa grooved lemma reduced panicle: 4-many racemose branches concave
Schizachyrium semi-terete 1/3 to 7/8 cleft spicate raceme convex