Aquatic and Wetland Vascular Plants of the Northern Great Plains
United States Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1993 - Aquatic plants - 681 pages
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2-3 mm long achenes anthers ascending axillary axils basal base beak Black Hills branches calyx Capsules Carex carpels catkins Circumboreal cm long cm wide corolla culms cylindric deciduous decumbent dense ditches dm tall elliptic elongate erect flat flattened florets Flowers fronds fruit glabrous glumes green habitats hypanthium inflorescence involucral bracts Jul—Sep Jun—Aug Jun—Jul keel lanceolate Leaf blades lemma ligule linear lobes margins marshes maturity membranous mm long N.Amer narrowly nerves Newf nodes oblanceolate oblong obovate obtuse occasional ovary ovate ovate-lanceolate ovoid panicle pedicels peduncles perennial perianth Perigynia petals petioles pinnately pistillate pistillate scales plants puberulent pubescent racemes rarely rhizomatous rhizomes rounded scabrous scarious seeds sepals serrate sessile sheaths shores shorter slender slightly sometimes species spikelets spikes spreading stamens stem stigmas stout stream banks strongly style submersed subtended tapered tepals terete terminal thick trigonous tufted upper usually ventrally Wet meadows wetland whorls yellow