Three Foxtails
| Setaria faberi (Giant Foxtail) |
Setaria pumila (Yellow Foxtail) |
Setaria viridis (Green Foxtail) |
|---|---|---|
|
Size: 2-4ft |
Size: 1-3ft |
Size: 1-2ft |
|
Ligules and leaves: Ligules made up of stiff hairs. Small, short hairs along the upper surface of the leaf blades. |
Ligules and leaves: Ligules made up of stiff hairs. Long hairs near the base of the leaf blade (in the collar region i.e. where the leaf blade becomes the sheath) |
Ligules and leaves: Ligules made up of stiff hairs. Leaves hairless. |
|
Leaves: Twice compound. Bush-like. Most distinctive of the all four. |
Leaves: Generally elliptic to oblong in outline, tapering at both ends. FORKED lateral veins on underside. |
Leaves: Generally lance-shaped in outline, widest below the middle and gradually tapering at the tip end. FORKED lateral veins on underside. Persistent tuft of hair on the underside of the leaf at main stem and leaflet mid-nerve. |
|
Inflorescence A nodding inflorescence, 1-3 bristles |
Inflorescence An erect inflorescence, 1-3 bristles |
Inflorescence An erect inflorescence, 5-15 bristles |
"Bristles are different than awns – while awns emerge from the tip of the spikelets, bristles surround the base of the spikelet, and are found in clusters."
All above info are a summary from below excellent webpage:
https://extension.illinois.edu/blogs/grasses-glance/2022-07-18-comparing-foxtails#:~:text=Size,one%20to%20two%20feet%20tall.
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