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Uniola paniculata Roth  
Family: Poaceae
Sea-Oats, more...Sea Oats
[Briza caroliniana Lam., moreUniola floridana Gand., Uniola heterochroa Gand., Uniola macrostachys Gand., Uniola maritima Michx.]
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H. Oliver Yates. Flora of North America

Plants perennial; rhizomatous. Culms to 2.5 m. Sheaths glabrate, mostly glabrous at maturity, with tufts of hairs near the collar; collars ciliate to pubescent; blades to 67 cm long, about 1 cm wide. Panicles 27-67 cm, open; branches drooping or nodding at maturity. Spikelets 15-30(50) mm long, 6-16 mm wide, ovate-elliptical, with (3)5-34 florets, the lower (3)4-5(8) sterile. Glumes 5-12 mm, acute; lemmas essentially glabrous, (7)9(13)-veined; paleas present only in the functional florets; anthers 4-6 mm. Caryopses 3-5 mm long, 1-1.5 mm wide. 2n = 40.

Uniola paniculata grows on the beaches and sand dunes of the Atlantic and Gulf coastal plains from Maryland to Veracruz, Mexico, and on the Florida Keys, the Bahama Islands, and Cuba. Seed production is generally poor; the reason is not known.

Vascular plants of NE US and adjacent Canada
Stout, 1-2.5 m, from extensively creeping rhizomes; lf-blades 2-4 dm, mostly under 1 cm wide, broad-based, ±involute, attenuate into a long slender tip; infl 2-6 dm, rather crowded, or more open in age; spikelets ascending on stout pedicels, ovate or lance-ovate, 15-40 mm, 10-25-fld; glumes and the 3-5 sterile lemmas lance-linear, scarcely shorter than the lower fertile lemmas; lemmas lance-ovate, smooth or scaberulous on the keel, about equaling the palea; 2n=40. Coastal sands; se. Va. to Fla., Tex., Mex., and W.I.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
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