Solanum dulcamara |
Solanum deflexum |
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bitter nightshade, bittersweet, bittersweet nightshade, blue bindweed, climbing nightshade, European bittersweet, felonwort |
sonoita nightshade |
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Habit | Herbs, annual, erect, unarmed, 0.1–0.3(–0.4) m, sparsely to densely pubescent, hairs 1–2-celled, unbranched, 1–2 mm, eglandular. | |
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 0.5–2 cm; blade simple, elliptic to elliptic-ovoid, 1–4.5 × 0.5–2.5 cm, margins entire, base rounded to obtuse and often decurrent. |
Inflorescences | terminal or lateral, extra-axillary, much-branched, 7–40-flowered, (1–)4–15 cm. |
nearly sessile, extra-axillary or subopposite leaves, unbranched, racemelike, 1–5-flowered. |
Pedicels | inserted into a small sleeve on the inflorescence axis, 0.6–1.2 cm in flower and fruit. |
0.5–1.2 cm in flower, 1–2 mm and spreading or nodding in 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, 3–9 mm, moderately to densely pubescent, lobes linear-lanceolate; corolla white, rotate, 0.5–1 cm diam., with abundant interpetalar tissue; stamens equal; anthers oblong, slightly tapered, 1.5–3 mm, dehiscent by terminal pores that open into longitudinal slits; ovary glabrous. |
Berries | bright shiny red, globose to ellipsoidal, 0.5–1.5 × 0.5–1 cm, glabrous, without sclerotic granules. |
white to greenish and semitransparent, globose, 5–12 mm diam., glabrous, without sclerotic granules. |
Seeds | pale yellow or tan, flattened, 2–3 mm diam., minutely pitted. |
light brown, somewhat flattened, ca. 2.5 × 1.5 mm, notched where connected to placenta, ridged. |
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. |
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Solanum dulcamara |
Solanum deflexum |
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Phenology | Flowering May–Nov. | Flowering Aug–Sep. |
Habitat | Weedy, in a wide variety of habitats, often associated with water. | Sandy soils in grazed areas, roadsides, disturbed areas in dry forests. |
Elevation | 0–2000 m. (0–6600 ft.) | 1000–1700 m. (3300–5600 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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AZ; Mexico; Central America (Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua) |
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 deflexum occurs sporadically in southeastern Arizona (Cochise, Pima, Pinal, and Santa Cruz counties). It is unique in its fruits with explosive dehiscence. As the berries mature, they build up turgor pressure until they burst, propelling seeds up to several feet from the parent plant. Plants of S. deflexum were often identified as S. adscendens Sendtner (M. Nee 1989), a distinct species found only in South America (S. Stern et al. 2013). (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 | Salpichroa wrightii |
Name authority | Linnaeus: Sp. Pl. 1: 185. (1753) | Greenman: Proc. Amer. Acad. Arts 32: 301. (1897) |
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