Difference between revisions of "Calystegia silvatica"
Spic. Fl. Rumel. 2: 74. 1844. (as sylvatica)
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|genus=Calystegia | |genus=Calystegia | ||
|species=Calystegia silvatica | |species=Calystegia silvatica | ||
Latest revision as of 13:15, 24 November 2024
Perennials, rhizomatous. Herbage glabrous. Stems twining-climbing. Leaves: blade ± cordate, to 50–120 mm, base rounded or lobed, lobes rounded or 1-pointed, basal sinus ± quadrate to rounded. Bracts immediately subtending sepals, lanceolate, to 30 × 15–35 mm, proximally saccate, margins strongly enfolding sepals, apex obtuse to truncate. Flowers: 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.
Distribution
North America, Europe, Asia, Pacific Islands (New Zealand), temperate regions.
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.
Selected References
None.
Key
| 1 | Peduncles 1–2 per axil; anthers 4–5 mm. | Calystegia silvatica subsp. fraterniflora |
| 1 | Peduncles 1 per axil; anthers 5–6.5 mm. | Calystegia silvatica subsp. disjuncta |