Spergularia macrotheca |
Spergularia platensis |
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beach sand-spurrey, beach sand-spurry, sticky sand spurry, sticky sand-spurrey |
La Plata sand-spurrey, La Plata sandspurry |
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Habit | Plants strongly perennial with branched, woody base, stout, 5–40 cm, densely stipitate-glandular in inflorescence or throughout. | |||||||||
Taproots | becoming stout, woody. |
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Stems | erect or ascending to prostrate, usually branched proximally; main stem 0.8–3 mm diam. proximally. |
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Leaves | stipules conspicuous, dull white to tan, narrowly triangular, 4.5–11 mm, apex long-acuminate; blade linear, (0.6–)1–5.5 cm, fleshy, apex apiculate to spine-tipped; axillary leaves 1–2+ per cluster. |
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Pedicels | erect, divergent, or reflexed in fruit. |
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Flowers | sepals connate 0.5–1.8 mm proximally, lobes often 3-veined, ovate to lanceolate, 4.5–7 mm, to 8 mm in fruit, margins 0.3–0.7 mm wide, apex blunt to rounded; petals white or pink to rosy, elliptic to obovate, 0.9–1.3 times as long as sepals in flower; stamens 9–10; styles 0.6–3 mm. |
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Capsules | tan, 4.6–10 mm, 0.8–1.4 times as long as sepals. |
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Seeds | ± red-brown, often with submarginal groove or depression, suborbiculate to pyriform, compressed, (0.6–)0.7–1.2 mm, smooth to faintly or prominently tuberculate or sculpturing of parallel, wavy lines or of low, rounded mounds, not papillate; wing absent or white to reddish brown proximally, 0.1–0.3 mm wide, margins irregular. |
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Cymes | simple to 3-compound or flowers solitary and axillary. |
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Spergularia macrotheca |
Spergularia platensis |
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Distribution |
CA; OR; WA; BC; including nw Mexico
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CA; TX; South America (Argentina) [Introduced in South America (Chile)] |
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Discussion | Varieties 3 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 2 (1 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 5, p. 18. | FNA vol. 5, p. 23. | ||||||||
Parent taxa | Caryophyllaceae > subfam. Polycarpoideae > Spergularia | Caryophyllaceae > subfam. Polycarpoideae > Spergularia | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | Arenaria macrotheca | Balardia platensis | ||||||||
Name authority | (Hornemann ex Chamisso & Schlechtendal) Heynhold: Alph. Aufz. Gew. 689. (1846) | (Cambessèdes) Fenzl: Ann. Wiener Mus. Narurgesh 2: 272. (1839) | ||||||||
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