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Sphenopholis
See list of 4 species in this genusReference: Daniel (2007).
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1a. Spikelets 5–9.5 mm long; awn of second lemma 3.5–7 mm long
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1b. Spikelets 1.5–4.2 mm long; second lemma lacking an awn or rarely with a short point
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2a. Second lemma prominently scabrous [Fig. 275]; anthers 1.2–1.6 mm long
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2b. Second lemma smooth to minutely scabrous [Fig. 274]; anthers 0.3–0.8 mm long
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3a. Upper glume acute at the apex [Fig. 274]; spikelets 3–4.2 mm long; lowest rachilla segment 0.8–1 mm long; inflorescence looser and somewhat open; anthers 0.3–0.5 mm long
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3b. Upper glume broad-rounded to truncate at the apex; spikelets 2.5–3 mm long; lowest rachilla segment 0.5–0.7 mm long; inflorescence dense; anthers 0.5–0.8 mm long
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Each photo represents one species in this genus.