Dichanthelium oligosanthes subsp. scribnerianum

Common names: Scribner's panicgrass
Synonyms: Panicum oligosanthes var. scribnerianum Panicum oligosanthes var. helleri Panicum helleri Panicum scribnerianum
Treatment appears in FNA Volume 25. Treatment on page 421.
Revision as of 21:01, 5 November 2020 by imported>Volume Importer

Culms 20-50 cm; internodes often lustrous, glabrous or sparsely papillose-hispid (rarely puberulent). Cauline sheaths often lustrous, glabrous or sparsely papillose-hispid (rarely puberulent); ligules 1-1.5 mm; blades usually 6-15 mm wide, less than 10 times longer than wide, flat, ascending to spreading, glabrous or sparsely pubescent abaxially, acute. Primary panicles denser than in subsp. oligosanthes, branches more flexible; pedicels mostly shorter than 5 mm. Spikelets usually 2.7-3.5 mm long, 2-2.4 mm wide, broadly obovoid-ellipsoid, usually glabrous. Upper glumes with a prominent orange to purplish spot at the base.

Discussion

Dichanthelium oligosanthes subsp. scribnerianum grows in sandy or clayey banks and prairies. Its range extends from southern British Columbia to the east coast of the United States, and south into northern Mexico. It is the most widespread of the two varieties.

Selected References

None.

Lower Taxa

None.
Mary E. Barkworth +
(Schult.) Gould +
Scribner's panicgrass +
Wash. +, Va. +, Alta. +, B.C. +, Man. +, Ont. +, Sask. +, Del. +, D.C. +, Wis. +, W.Va. +, Fla. +, Wyo. +, N.H. +, N.J. +, N.Mex. +, Tex. +, La. +, Tenn. +, N.C. +, S.C. +, Pa. +, Okla. +, N.Y. +, Maine +, Colo. +, Calif. +, Ala. +, Kans. +, N.Dak. +, Nebr. +, S.Dak. +, Ark. +, Vt. +, Ill. +, Ga. +, Ind. +, Iowa +, Ariz. +, Idaho +, Conn. +, Md. +, Mass. +, Ohio +, Utah +, Mo. +, Minn. +, Mich. +, R.I. +, Mont. +, Miss. +, Ky. +  and Oreg. +
Panicum oligosanthes var. scribnerianum +, Panicum oligosanthes var. helleri +, Panicum helleri +  and Panicum scribnerianum +
Dichanthelium oligosanthes subsp. scribnerianum +
Dichanthelium oligosanthes +
subspecies +