Solanum dulcamara |
Solanum donianum |
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bitter nightshade, bittersweet, bittersweet nightshade, blue bindweed, climbing nightshade, European bittersweet, felonwort |
mullein nightshade |
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Habit | Shrubs, erect, sparsely armed when young, older growth unarmed, 0.5–2.5 m, prickles brownish, 1–3 mm, straight, moderately to densely pubescent, hairs sessile to short-stalked, stellate, 6–9-rayed, central ray absent or shorter than lateral rays. | |
Leaves | petiolate; petiole 0.5–5 cm; blade simple, elliptic or ovate to cordate, 2.5–12 × 1.2–9 cm, margins entire to deeply pinnatifid and usually 3-lobed near base, lobe margins entire, base truncate to cordate. |
petiolate; petiole 1–3 cm; blade simple, ovate to elliptic, 4.5–13 × 2–5.5 cm, margins entire, base rounded to acute. |
Inflorescences | terminal or lateral, extra-axillary, much-branched, 7–40-flowered, (1–)4–15 cm. |
terminal to extra-axillary, much-branched, with numerous flowers, 2–8 cm. |
Pedicels | inserted into a small sleeve on the inflorescence axis, 0.6–1.2 cm in flower and fruit. |
erect and 0.7–1 cm in flower and fruit. |
Flowers | radially symmetric; calyx not accrescent, unarmed, 1–2 mm, glabrous to densely pubescent, lobes triangular, shallow; corolla purple (rarely white), with green and white shiny spots at base of each lobe, deeply stellate, 1.5–2 cm diam., without interpetalar tissue; stamens equal; anthers oblong, slightly tapered, 4.5–6 mm, dehiscent by terminal pores that often open into longitudinal slits; ovary glabrous. |
radially symmetric; calyx not accrescent, unarmed, 2–4 mm, moderately stellate-pubescent, lobes triangular; corolla white, stellate, 1.5–2 cm diam., without interpetalar tissue; stamens equal; anthers narrow and tapered, 3–4.5 mm, dehiscent by terminal pores; ovary glabrous or sparsely glandular-pubescent. |
Berries | bright shiny red, globose to ellipsoidal, 0.5–1.5 × 0.5–1 cm, glabrous, without sclerotic granules. |
red, globose, 0.5–1 cm diam., glabrous or sparsely glandular-pubescent, without sclerotic granules. |
Seeds | pale yellow or tan, flattened, 2–3 mm diam., minutely pitted. |
yellow, flattened, 2.5–3.5 × 1.5–2.5 mm, minutely pitted. |
Vines | , climbing or scrambling, herbaceous or woody, unarmed, to 8–10 m, sparsely to densely pubescent, hairs unbranched and/or dendritic, rarely glabrous. |
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2n | = 24. |
= 24. |
Solanum dulcamara |
Solanum donianum |
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Phenology | Flowering May–Nov. | Flowering year-round. |
Habitat | Weedy, in a wide variety of habitats, often associated with water. | Seasides, hammocks, pine forests, limestone soils. |
Elevation | 0–2000 m. (0–6600 ft.) | 0 m. (0 ft.) |
Distribution |
AL; AZ; CA; CO; CT; DC; FL; GA; IA; ID; IL; IN; KS; KY; MA; MD; ME; MI; MN; MO; MT; NC; ND; NE; NH; NJ; NM; NV; NY; OH; OR; PA; RI; SD; TN; UT; VA; VT; WA; WI; WV; WY; BC; MB; NB; NF; NS; ON; PE; QC; SK; Eurasia
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FL; s Mexico; West Indies (Bahamas); Central America (Belize, Guatemala)
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Discussion | Solanum dulcamara is widely distributed across Eurasia and boreal North America. The North American populations are thought to be introductions, but it is possible that the species has a truly circumboreal distribution. A white-flowered form has been recognized by some authors as S. dulcamara forma albiflorum House and an especially pubescent form as S. dulcamara var. villosissimum, but variation in a number of morphological features is continuous across the range of the species and these and other variants are not recognized in the latest monograph of the group (S. Knapp 2013). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Solanum donianum is occasional in southern Florida. The oldest name for this species is S. verbascifolium Linnaeus, but it has been widely misapplied to S. erianthum and is now rejected. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 14. | FNA vol. 14. |
Parent taxa | Solanaceae > Solanum | Solanaceae > Solanum |
Sibling taxa | ||
Synonyms | S. dulcamara var. villosissimum | S. blodgettii |
Name authority | Linnaeus: Sp. Pl. 1: 185. (1753) | Walpers: Repert. Bot. Syst. 3: 54. (1844) |
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