Schizachyrium rhizomatum
Florida little bluestem
50-90 cm tall, usually less than 1 mm thick, not rooting or branching at the lower nodes, usually glabrous.
3-7 cm;
rames 2-5.5 cm, with 5-14 spikelets, partially to fully exserted, collars neither elongate nor particularly narrow.
3.5-5 mm, ciliate, hairs to 2.3 mm, pedicel bases 0.1-0.2 mm wide, flaring above midlength to about 0.5 mm wide, tending to curve outward, rames appearing somewhat open.
about 0.5 mm;
blades 9.5-25 cm long, 1-3 mm wide, usually folded, without a longitudinal stripe of white, spongy tissue.
spikelets 4-7.5 mm;
calluses sparsely pubescent, hairs to 1.5 mm;
awns 2.5-10 mm;
upper lemmas membranous throughout, apices cleft for about 1/4 of their length.
spikelets 2.5-5.5 mm, unawned or with awns to 1 mm.
Schizachyrium rhizomatum
Schizachyrium rhizomatum grows in open glades and on the margins of pine woodlands and is endemic to Florida. It is restricted to thin, oolitic soils that are often saturated with water, and forms sparse stands, occasionally mixed with Andropogon gracilis, in the Florida Keys.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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