Muhlenbergia tenuiflora

(Willd.) Britton, Sterns & Poggenb.
Common names: Slimflowered muhly Muhlenbergie tenue
Synonyms: Muhlenbergia tenuiflora var. variabilis
Treatment appears in FNA Volume 25. Treatment on page 160.

Plants perennial; rhizomatous, not cespitose. Culms 40-120 cm tall, less than 2 mm thick, erect; internodes mostly pubescent, retrorsely hirsute to strigose below the nodes. Sheaths mostly glabrous, usually pubescent near the base, scabridulous distally; ligules 0.4-1.2 mm, membranous, truncate, ciliolate; blades 6-20 cm long, 4-10(15) mm wide, flat, glabrous and smooth abaxially, occasionally scabridulous adaxially. Panicles usually terminal, 10-33 cm long, 0.2-0.8 cm wide, exserted; branches 1-10 cm, ascending to appressed; pedicels 1-6 mm, strigose. Spikelets 2.6-4.5 mm, overlapping the next spikelet on the branch by 1/4 of its length. Glumes subequal, 1.3-3 mm, shorter than the lemmas, 1-veined (lower glumes rarely 2- or 3-veined), tapering from near the base, bases overlapping, apices scabridulous, acute, unawned or awned, awns to 1 mm; lemmas 2.6-4.5 mm, lanceolate to narrowly lanceolate, usually pubescent on the calluses, lower 1/3 of the midveins, and margins (hairs sometimes restricted to the callus), hairs shorter than 1.2 mm, apices acute or acuminate, usually awned, awns to 12 mm; paleas 2.6-4.5 mm, lanceolate to narrowly lanceolate, shortly pilose on the lower portion, apices acuminate; anthers 1.1-2.2 mm, yellowish. Caryopses 2-2.3 mm, fusiform, brown. 2n = 40.


Conn., N.J., N.Y., W.Va., Del., D.C., Wis., Ont., Que., Nebr., Okla., N.H., Tenn., N.C., S.C., Pa., R.I., Va., Ala., Mass., Vt., Ark., Ill., Ga., Ind., Iowa, Md., Ohio, Mo., Mich., Miss., Ky.


Muhlenbergia tenuiflora grows only in the Flora region, usually being found on sandy or rocky slopes derived from sandstone, chert, or limestone formations, in mixed hardwood and oak-hickory forests, at elevations of 40-1500 m. It resembles the Asiatic species M. curviaristata (Ohwi) Ohwi.

Selected References


Lower Taxa

... more about "Muhlenbergia tenuiflora"
Paul M. Peterson +
(Willd.) Britton, Sterns & Poggenb. +
Slimflowered muhly +  and Muhlenbergie tenue +
Conn. +, N.J. +, N.Y. +, W.Va. +, Del. +, D.C. +, Wis. +, Ont. +, Que. +, Nebr. +, Okla. +, N.H. +, Tenn. +, N.C. +, S.C. +, Pa. +, R.I. +, Va. +, Ala. +, Mass. +, Vt. +, Ark. +, Ill. +, Ga. +, Ind. +, Iowa +, Md. +, Ohio +, Mo. +, Mich. +, Miss. +  and Ky. +
Muhlenbergia tenuiflora var. variabilis +
Muhlenbergia tenuiflora +
Muhlenbergia +
species +