Contains 15 accepted taxa overall.

Characteristics
Setaria P.Beauv.
BRISTLEGRASS; FOXTAIL
Classification
POALES
Setaria
Citation
SETARIA Palisot de Beauvois, Ess. Agrostogr. 51, 178, pl. 13(3). 1812, nom. cons. vs. Setaria Acharius ex Michaux 1803.
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TYPE: Setaria viridis (Linnaeus) Palisot de Beauvois, typ. cons. (Panicum viride Linnaeus)
Distribution Map Present

This species have been reported in the counties highlighted.

Species
Scientific Name Common Name Herbarium Specimens Status Photos
Setaria adhaerens BUR BRISTLEGRASS Not Native FAC (NWPL)
Setaria barbata EAST INDIAN BRISTLEGRASS; MARYGRASS; CORNGRASS Not Native
Setaria corrugata COASTAL BRISTLEGRASS; COASTAL FOXTAIL Native
Setaria faberi JAPANESE BRISTLEGRASS; GIANT FOXTAIL Not Native UPL (NWPL)
Setaria italica FOXTAIL BRISTLEGRASS Not Native FACU (NWPL)
Setaria macrosperma CORAL BRISTLEGRASS; CORAL FOXTAIL Native FAC (NWPL)
Setaria magna GIANT BRISTLEGRASS Native FACW (NWPL) OBL (DEP)
Setaria megaphylla PALMGRASS Not Native
Setaria palmifolia PALMGRASS Not Native FAC (NWPL)
Setaria parviflora YELLOW BRISTLEGRASS; KNOTROOT FOXTAIL Native FACW (NWPL) AD (WAP) FAC (DEP)
Setaria pumila YELLOW BRISTLEGRASS; YELLOW FOXTAIL Not Native FAC (NWPL)
Setaria rariflora BRAZILIAN BRISTLEGRASS Not Native
Setaria setosa WEST INDIAN BRISTLEGRASS Not Native
Setaria sphacelata AFRICAN BRISTLEGRASS Not Native FAC (NWPL)
Setaria viridis GREEN BRISTLEGRASS; GREEN FOXTAIL; FOXTAIL MILLET Not Native
Identification Key
1.  Bristles on pedicel below each spikelet 4-18
2
1.  Bristles on pedicel below each spikelet 0-3(6) (some spikelets abortive)
3
2.  Annual; spikelets 2-3.4 mm long
2.  Perennial; spikelets 2-2.5 mm long
3
3.  Leaf blades 4-20(25) cm long; inflorescence (11) cm long
3.  Leaf blades (8)15-50 cm long; inflorescence (5)10-25 cm long; bristles
4.  Bristles retrorsely scabrous
4.  Bristles antrorsely scabrous
5
5.  Inflorescence branch usually with only bristle subtending the terminal spikelet, bristles subtending more proximal spikelets usually absent or few
6
5.  Inflorescence branch with bristles subtending all spikelets
7
6.  Annual; leaf blades 10-25 mm wide; inflorescence rachis villous
6.  Perennial; leaf blades 20-80 mm wide; inflorescence rachis scabrous or puberulent
7
7.  Inflorescence compact and spicate, the branches stiff and 2-5 cm long
7.  Inflorescence open and paniculate, the branches lax and 6-10 cm long
8.  Perennial; inflorescence somewhat loosely flowered
9
8.  Annual; inflorescence usually densely flowered or sometimes somewhat loose
11
9.  Spikelets 3-3.2 mm long
9.  Spikelets 1.9-2.5 mm long
10
10.  Leaf blades 1-5 mm wide; lower glumes ca. 1/3 as long as the spikelets
10.  Leaf blades 6-12 mm wide; lower glumes ca. half as long as the spikelets
11.  Upper lemmas smooth and shiny (occasionally obscurely rugose); leaf blades 10-35 mm wide
12
11.  Upper lemmas distinctly transversely rugose, dull; leaf blades to 4-15(25) mm wide
13
12.  Spikelets 2.8-3.2 mm long, the lower palea absent or up to 1/2 as long as the lower lemma
12.  Spikelets 1.8-2.2 mm long, the lower palea subequal to the lower lemma
13.  Culm nodes often strigose or hispid; upper lemmas coarsely rugose
13.  Culm nodes glabrous; upper lemmas finely rugose
14
14.  Leaf blade upper surface softly pilose; inflorescence mostly nodding from the base; spikelets 2.5-3 mm long
14.  Leaf blades upper surface scabrous; inflorescence mostly nodding only near the apex; spikelets 1.8-2.2 mm long
Genus Synonyms
Synonym Full Citation Basionym Type
Acrochaete Acrochaete Peter, Repert. Spec. Nov. Regni Veg. Beih. 40(1, app.): 54. 1930, non Pringsheim 1863. TYPE: Acrochaete pseudaristata Peter = Tansaniochloa Rauschert 1982.
Camusiella Camusiella Bosser, Adansonia, ser. 2. 6: 105. 1966. TYPE: Camusiella vatkeana (K. Schumann) Bosser (Setaria vatkeana K. Schumann)
Chaetochloa Chaetochloa Lamson-Scribner, U.S.D.A. Div. Agrost. Bull. 4: 38. 1897. TYPE: Chaetochloa viridis (Linnaeus) Lamson-Scribner (Panicum viride Linnaeus) = Setaria Palisot de Beauvois 1812.
Cymbosetaria Cymbosetaria Schweickerdt, in A. W. Hill, Hooker's Icon. Pl., ser. 5. 34: pl. 3320. 1939. TYPE: Cymbosetaria sagittifolia (A. Richard) Schweickerdt (Pennisetum sagittifolium A. Richard)
Tansaniochloa Tansaniochloa Rauschert, Taxon 31: 561. 1982. TYPE: Tansaniochloa pseudaristata (Peter) Rauschert (Acrochaete pseudaristata Peter) Substitute name for Acrochaete Peter 1930, non Pringsheim 1863.