Comments
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The name Suaeda depressa has been misapplied to this species (J. McNeill et al. 1977). In the northeastern part of its range, S. calceoliformis was long known as S. americana, but the two were found to be conspecific (I. J. Bassett and C. W. Crompton 1978). Suaeda calceoliformis can easily be confused with S. occidentalis, with which it is sympatric in the Great Basin; see comments under S. occidentalis. Plants of the annual Mexican seepweed, S. mexicana (Standley) Standley also are similar to S. calceoliformis, but are more or less shiny, yellowish or light brown, and have opposite leaves at the base and alternate ones distally. Suaeda mexicana has been reported once (in 1895) from El Paso County, Texas, but no specimens have been located to substantiate the report.
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Description
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Herbs, annual, prostrate to erect, green to dark red, 0.5-8(-10) dm, glaucous. Stems decumbent to erect, green to dark red, usually striped, simple or branched; branches decumbent, ascending, or spreading. Leaves often tightly ascending, sometimes ± spreading; blade linear-lanceolate, adaxial surface flat, (5-)10-40 × 0.2-15 mm, usually widest proximal to middle, apex acute to apiculate. Glomes usually crowded in 1-6 cm compound spikes, 3-5(-7)-flowered; bracts subtending branches leaflike, often slightly broader than leaves, bracts subtending glome similar in shape to leaves, 2-12 × 0.8-1.5 mm, broadest proximal to middle, thin-margined basally. Flowers bisexual; perianth zygomorphic or irregular (1 or 3 segments usually larger), 1-4 mm diam.; perianth segments transversely winged proximally (continuously in disk or interrupted), rounded and keeled abaxially and/or horned or hooded distally; stigmas usually 2. Seeds dimorphic; lenticular, 0.8-1.7 mm diam., with seed coat black, shiny; or flat, 1-1.5 mm diam., with seed coat brown, dull. 2n = 36.
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Distribution
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Alta., B.C., Man., N.B., Nfld. and Labr. (Nfld.), N.W.T., N.S., Nunavut, Ont., P.E.I., Que., Sask., Yukon; Alaska, Ariz., Calif., Colo., Conn., Idaho, Ill., Ind., Iowa, Kans., Maine, Mass., Mich., Minn., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.Dak., Okla., Oreg., R.I., S.Dak., Tex., Utah, Wash., Wis., Wyo.; Mexico.
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Flowering/Fruiting
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Flowering summer-fall.
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Habitat
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Saline or alkaline wetland soils, including disturbed areas and reservoir margins, also along salted roadsides; 0-2400m.
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Synonym
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Chenopodium calceoliforme Hooker, Fl. Bor.-Amer. 2: 126. 1838; Suaeda americana (Persoon) Fernald; S. depressa (Pursh) S. Watson var. erecta S. Watson; S. erecta (S. Watson) A. Nelson
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Suaeda calceoliformis
provided by wikipedia EN
Suaeda calceoliformis is a species of flowering plant in the family Amaranthaceae known by several common names, including Pursh seepweed[1] and horned seablite.
Distribution
The plant is native to North America, where it can be found across most of the continent except for parts of the Southeastern United States. It is a halophyte, growing in areas of high soil salinity and alkalinity, such as playas, salt flats, beaches, marshes and other wetlands, and the edges of roads that are salted in the winter.
Description
Suaeda calceoliformis is an annual herb with waxy green to red or striped, bicolored stems growing up to 80 centimeters long. It may grow erect to prostrate in shape, the prostrate forms being more common in higher salinity substrates because they can retain more water.[2] The fleshy, waxy leaves are up to 4 centimeters long, linear in shape, and lie nearly against the stem instead of spreading away from it.
The inflorescence is an elongated cyme of flowers shaped like a branching spike. It is dense with many tight clusters of flowers with leaflike bracts growing between them. There are three to five flowers per cluster, each with a calyx of horned sepals and no petals.
The fruit is an utricle that grows within the calyx.
References
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^ USDA, NRCS (n.d.). "Suaeda calceoliformis". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 4 December 2015.
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^ Youngman, A. L. and S. A. Heckathorn. (1992). Effect of salinity on water relations of two growth forms of Suaeda calceoliformis. Functional Ecology 6:6 686-92.
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Suaeda calceoliformis: Brief Summary
provided by wikipedia EN
Suaeda calceoliformis is a species of flowering plant in the family Amaranthaceae known by several common names, including Pursh seepweed and horned seablite.
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