Andropogon gyrans
Andropogon gyrans var. stenophyllus
Elliott's bluestem
Elliott's bluestem
30-100 (140) cm;
internodes usually glaucous;
branches mostly erect, straight.
smooth;
ligules 0.3-1.5 mm, sometimes ciliate, cilia to 0.7 mm;
blades 6-48 cm long, 0.8-5 mm wide, glabrous or densely pubescent with spreading hairs.
2-31 per culm; subtending sheaths (2.6)4.1-4.5(13.5) cm long, (1.5)2.7-4.7(8) mm wide;
peduncles (1)5-31(195) mm, with 2-5 rames;
rames (1.5)2.8-4.2(6) cm, exserted or not at maturity, pubescence increasing in density distally within each internode.
usually with 2 rames;
rames usually exposed at maturity.
spikelets (3)3.9-4.7(5.7) mm;
callus hairs 1-5 mm;
keels of lower glumes scabrous only beyond midlength;
awns 8-24 mm;
anthers 1, 0.6-1.4(1.7) mm, yellow or purple.
spikelets vestigial or absent.
(0.8)1.1-1.5 mm.
= 20.
Andropogon gyrans
Andropogon gyrans var. stenophyllus
Andropogon gyrans extends from the southeastern United States to the Caribbean and Central America.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Andropogon gyrans var. stenophyllus grows in ditches, bogs, savannahs, and pond margins of the coastal plain, from eastern Texas to North Carolina.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Ligules 0.3-1.1 mm long; rames usually hidden within the more or less overlapping and inflated upper sheaths at maturity; plants usually of well-drained soils | var. gyrans |
1. Ligules 0.8-1.5 mm long; rames usually exposed at maturity; plants of wet habitats | var. stenophyllus |
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