Calystegia soldanella |
Calystegia silvatica |
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beach bindweed, beach false bindweed, beach morning-glory, coast morning-glory, seashore false bindweed, seaside morning-glory |
hedge bindweed, large bindweed, morning-glory, short-stalk false bindweed |
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Habit | Perennials, rhizomatous. | Perennials, rhizomatous. | ||||
Herbage | glabrous. |
glabrous. |
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Stems | usually prostrate or trailing, sometimes twining-climbing, to 100(–250) cm. |
twining-climbing. |
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Leaves | blade ± reniform, 15–35(–45) × 20–60(–70) mm, ± fleshy), base ± cuneate, apex emarginate or obtuse. |
blade ± cordate, to 50–120 mm, base rounded or lobed, lobes rounded or 1-pointed, basal sinus ± quadrate to rounded. |
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Bracts | immediately subtending sepals, ovate to suborbiculate, 7–16 × 5–10 mm, proximally flat, ± enfolding sepals. |
immediately subtending sepals, lanceolate, to 30 × 15–35 mm, proximally saccate, margins strongly enfolding sepals, apex obtuse to truncate. |
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Flowers | sepals 10–16 mm; corolla pink, 32–52 mm. |
sepals oval to ovate, 15–23 mm; corolla white, sometimes pinkish-striped, rarely otherwise pink-tinged, 43–70[–88] mm; stamens 23–40 mm; anthers 4–6.5 mm. |
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2n | = 22 [Asia, Europe]. |
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Calystegia soldanella |
Calystegia silvatica |
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Phenology | Flowering May–Aug. | |||||
Habitat | Open, sandy shores. | |||||
Elevation | 0(–10) m. (0(–0) ft.) | |||||
Distribution |
CA; OR; VA; WA; BC; South America; w Europe; Asia; Africa; Atlantic Islands (Canary Islands, Tristan da Cunha); Pacific Islands (Galapagos, New Zealand); Australia
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North America; Europe; Asia; Pacific Islands (New Zealand); temperate regions
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Discussion | Subspecies 3 (2 in the flora). Subspecies silvatica is native to eastern Mediterranean Europe; it has corollas (50–)55–75(–88) mm, stamens (25–)28–36(–39) mm, and bract apices emarginate to truncate. Intermediates between Calystegia silvatica and C. sepium may be due to ancient or recent hybridization. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 14. | FNA vol. 14. | ||||
Parent taxa | Convolvulaceae > Calystegia | Convolvulaceae > Calystegia | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Convolvulus soldanella | Convolvulus silvaticus | ||||
Name authority | (Linnaeus) R. Brown: Prodr., 484. (1810) | (Kitaibel) Grisebach: Spic. Fl. Rumel. 2: 74. (1844) — (as sylvatica) | ||||
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