Setaria

(Fertile lemma indurate, as opposed to soft in Pennisetum)

1. Plants > 1 m tall…2

1. Plants < 1 m tall…3

2. Panicle to 50 cm.  Spikelets 2 mm… (can be huge, the stem multiple cm diam)

2. Panicle to 25 cm.  Spikelets > 3 mm long… (maritime species)

3. Bristles 1-3…4

3. Bristles 4-12…5

4. Bristle 1.  Lemma smooth…(panicle 5-15 cm.  Blades 5-10 mm wide)

4. Bristle 1-3.  Lemma rugose…

5. Spikelets < 2.3 mm long.  Panicle < 8 cm long…(native?)

5. Spikelets 3 mm.  Panicles 3-15 cm long… (native)