Andropogon gyrans

Ashe
Synonyms: Andropogon subtenuis unknownAndropogon elliottii var. projectus unknownAndropogon elliottii unknown
Treatment appears in FNA Volume 25. Treatment on page 657.
Revision as of 02:50, 27 July 2019 by FNA>Volume Importer
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Plants cespitose, cylindrical to ovate above. Culms 30-100 (140) cm; internodes usually glaucous; branches mostly erect, straight. Sheaths 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. Inflorescence units 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. Sessile 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. Pedicellate spikelets vestigial or absent. 2n = 20.

Distribution

Del., D.C, W.Va., Fla., N.J., Tex., La., Tenn., N.C., S.C., Pa., Va., Ala., Ark., Ill., Ga., Ind., Md., Okla., Ohio, Mo., Miss., Ky.

Discussion

Andropogon gyrans extends from the southeastern United States to the Caribbean and Central America.

Selected References

None.

Key

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 Andropogon gyrans var. gyrans
1 Ligules 0.8-1.5 mm long; rames usually exposed at maturity; plants of wet habitats Andropogon gyrans var. stenophyllus
... more about "Andropogon gyrans"
Christopher S. Campbell +
Del. +, D.C +, W.Va. +, Fla. +, N.J. +, Tex. +, La. +, Tenn. +, N.C. +, S.C. +, Pa. +, Va. +, Ala. +, Ark. +, Ill. +, Ga. +, Ind. +, Md. +, Okla. +, Ohio +, Mo. +, Miss. +  and Ky. +
Andropogon subtenuis +, Andropogon elliottii var. projectus +  and Andropogon elliottii +
Andropogon gyrans +
Andropogon sect. Leptopogon +
species +