Comparison Chart for Species of Setaria

• Character	Setaria adhaerens	Setaria faberi	Setaria parviflora	Setaria pumila	Setaria verticillata	Setaria viridis
  bristle number per spikelet	1	(1)2–3	4–12	4–15	(1)2–3	1–4 since some spikelets may be aborted, bristle number may seem larger
  bristle surface	retrorsely scabrous	antrorsely scabrous	antrorsely scabrous	antrorsely scabrous	retrorsely scabrous	antrorsely scabrous
  spikelet size	1.5–2.2 mm long ca. 1 mm wide ca. 0.9 mm thick	2.5–3 mm long 1.3–1.8 mm wide 1–1.4 mm thick	2–2.8(3) mm long 1–1.3(1.5) mm wide 1–1.25 mm thick	3–3.5 mm long 1.5–2(2.2) mm wide 1.2–1.6 mm thick	1.5–2.5 mm long 1–1.5 mm wide 1–1.4 mm thick	1.8–2.2(3.2) mm long 0.9–1.2 mm wide 0.8–1 mm thick
  upper glume length / spikelet length	0.9–1	0.66–0.75	0.5–0.66	0.4–0.7	0.9–1	0.9–1
  sterile palea length / sterile lemma length	0.5	0.66	1	1	0.5	0.33–0.5
  fertile lemma apex	acute	acute	acute	acute	acute	obtuse
  appearance of lemma veins	obscure	obscure	obscure	obscure	3 light-colored	3 light-colored