Panicum hallii subsp. filipes
Plants often taller than subsp. hallii, sparsely pubescent to almost glabrous. Blades relatively lax, ascending to spreading, not strongly clustered basally or curling at maturity. Panicles scarcely exceeding the blades, with more closely spaced spikelets than in subsp. hallii; main branches rarely whorled, more crowded. Spikelets 2.1-3 mm.
"decumbent" is not a number."elongated" is not a number."-11-veined" is not declared as a valid unit of measurement for this property.