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Key to Suaeda

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1 Shrubs, perennials, or rarely annuals; plants pubescent or glabrous; perianth segments regular; [TX and westward]; [section Limbogermen].
..2 Stems smooth at leaf scars; inflorescence branches mostly thinner than vegetative branches
..2 Stems knobby at leaf scars; inflorescence branches as thick as vegetative branches.
....3 Stems prostrate to decumbent, glabrous; leaf tips rounded
....3 Stems decumbent to erect, densely pubescent; leaf tips acuminate to apiculate
1 Annuals, or perennials; plants glabrous; perianth segments regular or irregular; [collectively wide ranging]; [section Brezia].
......4 Sepals essentially equal, rounded, keeled or not, but none appendaged.
........5 Sepals distinctly narrowly keeled; stems erect, green to reddish, often profusely branched from base
........5 Sepals rounded or obscurely keeled; stems prostrate or decumbent to erect, usually light brown, simple or branched
......4 Sepals distinctly unequal, appendaged with horns, keels, or wings or not.
..........6 Glomeruls usually crowded into compound spikes; stems green or red; [wide ranging, usually in disturbed, often salted sites]
..........6 Glomerules not crowded into spikes; stems green; [northeastern North American tidal flats and salt marshes]
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