Oryzopsis racemosa - (image 1 of 5)
Taxonomy
Family: Poaceae
Habitat
Dune slopes, wooded bluffs and ravines. Rocky woods. Fire adapted.
Associates
Distribution
Quebec to Ontario, MN, and ND, south to VA, KY, MO, and NE.
Morphology
Perennial from a knotty rhizome, to 1 m. Leaves mostly cauline, flat, scaberulous above, pubescent below, finely veined; ligule small or absent; inflorescence paniculate, sparsely branched; spikelets 1-flowered, articulated above the glumes, appressed; glumes herbaceous, acute or short-acuminate, equal or nearly equal, 7-veined; lemma dark brown and shiny, to 7 mm; awn to 22 mm.
Notes
Flowers early to mid August.
Wetland indicator: Upland
Similar to O. asperifolia (Rough-leaved Ricegrass), which has the blade of the uppermost leaf reduced in size (0-3 cm), and a racemiform inflorescence.
References
Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY
Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.
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Michael Hough © 2005 |