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Bothriochloa bladhii

Bothriochloa bladhii (Retz.) S.T. Blake  
Family: Poaceae
Australian Beard Grass, more...Australian Bluestem, Caucasian bluestem
[Amphilophis glabra (Roxb.) Stapf, moreAmphilophis insculpta var. vegetior (Hack.) Stapf, Amphilophis intermedia (R. Br.) Stapf, Amphilophis intermedia var. acidula (Stapf) Stapf, Andropogon annulatus var. bladhii (Retz.) Hack., Andropogon bladhii Retz., Andropogon caucasicus Trin., Andropogon intermedius R.Br., Andropogon intermedius var. acidula Stapf, Andropogon intermedius var. caucasicus (Trin.) Hack., Andropogon intermedius var. genuinus Hack., Andropogon intermedius var. punctatus (Roxb.) Hack., Andropogon perfossus Nees & Meyen ex Steud., Andropogon pertusus var. vegetior Hack., Andropogon punctatus Roxb., Bothriochloa caucasica (Trin.) C.E.Hubb., Bothriochloa glabra var. epunctata Jackson, Bothriochloa insculpta var. vegetior (Hack.) C.E. Hubb., Bothriochloa intermedia (R.Br.) A.Camus, Bothriochloa intermedia var. acidula (Stapf) C.E. Hubb., Bothriochloa odorata (Lisboa) A.Camus, Dichanthium caucasicum (Trin.) S.K. Jain & Deshp., Dichanthium intermedium (R. Br.) de Wet & J.R. Harlan, Sorghum caucasicum (Trin.) Griseb.]
Bothriochloa bladhii image
Max Licher
  • FNA
  • Resources
Kelly W. Allred. Flora of North America

Culms 40-90(150) cm, usually erect; nodes glabrous or short hispid, with mostly appressed, less than 2 mm hairs. Leaves cauline; ligules 0.5-1.5 mm; blades (10)20-35(40) cm long, 1-4.5(5.5) mm wide, mostly glabrous. Panicles 5-15(24) cm, elliptic to lanceolate, reddish at maturity; rachises 6-12(20) cm, with numerous branches; branches 3-7 cm, shorter than the rachises, erect to spreading during anthesis, with axillary pulvini, lower branches with multiple rames; rame internodes with darkened grooves, with sparse, about 1 mm marginal hairs. Sessile spikelets 3.5-4 mm, oblong-ovate; lower glumes glabrous or scabrous, with or without a dorsal pit; awns 10-17 mm, twisted, geniculate; anthers 1-2 mm. Pedicellate spikelets about the same size and shape as the sessile spikelets, or about 1/2 their size, staminate or sterile. 2n = 40, 60, 80.

Bothriochloa bladhii grows along roadsides and in rangeland pastures, waste ground, and open disturbed areas, at 150-1800 m. It is native to subtropical Asia and Africa and was introduced to the Flora region as a forage grass. It is now established in the southern and central United States. A similar species, B. decipiens (Hack.) C.E. Hubb., has been grown at some experiment stations in the United States. It is not known to be established in North America. Bothriochloa decipiens differs from B. bladhii in having longer (4.7-5.3 mm) sessile spikelets and a single anther.

The Eastern Hemisphere species of Bothriochloa are thought to be closely related to Capillipedium and Dichanthium, largely because B. bladhii hybridizes with those genera as well as with B. ischaemum.

Bothriochloa bladhii
Open Interactive Map
Bothriochloa bladhii image
Max Licher
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Max Licher
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Max Licher
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Max Licher
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Max Licher
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Max Licher
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Jose Hernandez
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Jose Hernandez
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Jose Hernandez
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Jose Hernandez
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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University of Florida Herbarium
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