Spergularia canadensis |
Spergularia media |
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Canada sand-spurrey, Canada sand-spurry, Canadian sand-spurrey, Canadian sand-spurry |
greater sea-spurrey, media sandspurry, sand spurry, spergulaire marginée, spergulaire moyenne, stout sand-spurrey |
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Habit | Plants annual, delicate to stout, 3–25 cm, glabrous or stipitate-glandular throughout or only in inflorescence. | |||||
Taproots | slender. |
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Stems | prostrate or decumbent to erect, usually branched proximally; main stem usually 0.4–1.8 mm diam. proximally. |
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Leaves | stipules inconspicuous, dull white, broadly triangular, 1–2.8 mm, apex obtuse to acute; blade linear, 1.5–4.5 cm, fleshy, apex ± blunt; axillary leaf clusters mostly absent. |
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Pedicels | reflexed in fruit. |
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Flowers | sepals connate 0.5–0.6 mm proximally, lobes weakly 1-veined, ovate to elliptic-oblong, 2.2–3.5 mm, to 4.3–4.5 mm in fruit, margins 0.2–0.5 mm wide, apex ± acute to rounded; petals white or pink, narrowly ovate, 0.9–1 times as long as sepals; stamens 2–4; styles 0.3–0.7 mm. |
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Capsules | greenish, 3.5–5.3 mm, 1.2–2 times as long as sepals. |
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Seeds | reddish brown, submarginal groove absent, broadly ovate, compressed, 0.9–1.4 mm, shiny, ± smooth, papillate; wing absent or often present, whitish, 0.2–0.3 mm wide, margins irregular. |
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Cymes | simple to 2+-compound or flowers solitary and axillary. |
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Spergularia canadensis |
Spergularia media |
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Distribution |
AK; CA; CT; MA; ME; NH; NY; OR; RI; WA; BC; NB; NF; NS; NU; ON; PE; QC; Coastal North America
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CA; CO; IL; IN; MA; MI; MT; ND; NM; NY; OH; OR; PA; UT; WY; ON; QC; coastal Europe; Asia; Africa (Mediterranean region) [Introduced widely]
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 5 (1 in the flora). Although a proposal to reject Spergularia media as a confused name (J. Lambinon 1981) was rejected, some authors still favor that argument, preferring to use the name S. maritima for this species. Spergularia media is one of the “highway halophytes” (A. A. Reznicek 1980) that have spread along highways that are heavily salted during the winter, where saline areas have been created. Spergularia distribution has been investigated in Ohio (A. W. Cusick 1983), where such records were first noted in the early 1970s. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 5, p. 20. | FNA vol. 5, p. 21. | ||||
Parent taxa | Caryophyllaceae > subfam. Polycarpoideae > Spergularia | Caryophyllaceae > subfam. Polycarpoideae > Spergularia | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Arenaria canadensis | Arenaria media | ||||
Name authority | (Persoon) G. Don: Gen. Hist. 1: 426. (1831) | (Linnaeus) C. Presl: Fl. Sicul. 161. (1826) | ||||
Web links |
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