Jepson eFlora
Key to families | Table of families and genera

Key to Setaria

View taxon page for Setaria

1. Bristles at base of spikelets with short stiff hairs pointed toward base

2. Leaf sheath margins glabrous; leaf blade sparsely hairy abaxially ..... S. adhaerens

2' Leaf sheath margins ciliate; leaf blade scabrous abaxially ..... S. verticillata

1' Bristles at base of spikelets with short stiff hairs pointed toward tip

3. Upper glume ± = upper lemma; upper lemma ± smooth, dull or shiny

4. Spikelet ± 2 mm; panicle 3–8 cm; leaf blades 3–12 mm wide ..... S. viridis

4' Spikelet 2.5–3 mm; panicle 8–30 cm; leaf blades 10–30 mm wide ..... S. faberi

3' Upper glume < upper lemma; upper lemma strongly ridged

5. Rhizomes absent; upper glume <= 0.5 × upper lemma; spikelet generally > 2.8 mm, generally 1.5–2 mm wide ..... S. pumila subsp. pumila

5' Rhizomes present; upper glume > 0.5 × upper lemma; spikelet generally < 2.8 mm, generally <= 1.5 mm wide

6. Panicle < 10 cm, 3–4 mm wide; bristles green or straw-colored; stigma dark brown or purple; base of flowering stems with hard, knot-like swellings ..... S. parviflora

6' Panicle > 10 cm, 4–6 mm wide; bristles generally orange; stigma pale; base of flowering stems not swollen ..... S. sphacelata

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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