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Key to Sphenopholis
https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=39806
3 Lower leaf blades usually involute, mostly (10-) 15-45 cm long, < 2 mm wide | |
4 First glume ≤ ⅓ as wide as the second glume; second lemma smooth to slightly scabrous (scabridulous). | |
6 Spikelets 4-5.2 mm long; panicles nodding, not spikelike; spikelets loosely arranged | |
6 Spikelets 2.1-4 mm long; panicles nodding or erect, spikelike or not spikelike; spikelets loosely or densely arranged. | |