Solanum triflorum
Solanum tampicense
cut-leaf nightshade, three flower nightshade
aquatic soda apple, scrambling nightshade
petiolate;
petiole 0.5–2.5 cm;
blade simple, elliptic to oblong, 2–5 × 1–3 cm, margins shallowly lobed to deeply and regularly pinnatifid with 3–6 lobes per side, lobe margins entire or occasionally coarsely lobed, base cuneate and decurrent.
petiolate;
petiole 1–4 cm;
blade simple, ovate, 4–16 × 2–6 cm, margins shallowly to moderately lobed with 2–5 lobes per side, lobe margins entire, base cuneate and slightly decurrent.
extra-axillary, unbranched, umbel-like, 1–6-flowered, 1–3 cm.
extra-axillary, unbranched, 3–10-flowered, 1–4 cm.
spreading and 0.5–1.5 cm in flower, reflexed and 0.5–1.5 cm in fruit.
0.5–2 cm in flower and fruit.
radially symmetric;
calyx accrescent and covering base of berry, unarmed, 2–4(–7) mm, moderately pubescent, lobes deltate, reflexed;
corolla white or light purple with green or purplish central star, stellate, 0.5–1 cm diam., with sparse interpetalar tissue;
stamens equal;
anthers narrowly ellipsoidal, 2.5–4 mm, dehiscent by terminal pores that open into longitudinal slits;
ovary glabrous.
radially symmetric;
calyx not accrescent, sometimes prickly, 2–5 mm, glabrous, lobes narrowly triangular;
corolla white to cream, stellate, 1.5–2 cm diam., without interpetalar tissue;
stamens equal;
anthers narrow and tapered, 4–6 mm, dehiscent by terminal pores;
ovary glabrous.
shiny dark green to purplish black, globose, 0.8–2 cm diam., glabrous, with 13–30 sclerotic granules.
red, globose, 0.5–0.8 cm diam., glabrous, without sclerotic granules.
yellow, plump, 2–3 × 2–2.5 mm, minutely pitted.
yellow, flattened, 1.5–2 × 1–1.5 mm, minutely pitted and ridged.
= 24.
Solanum triflorum
Solanum tampicense
Solanum triflorum is found in South America (Argentina) and is also considered to be native to central and western North America. It is occasionally adventive in the eastern United States. It is poisonous to livestock and can become a serious weed in cultivated fields, especially in the Great Plains.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
In the flora area, Solanum tampicense is found in central and southern Florida. A single population was found in 2016 in Cameron County, Texas. It was first collected in Florida in 1983, and although not common, it has the potential to become invasive. It is listed by the United States federal government and several states as a noxious weed. It is a species of riverbanks and swamps, where it can form impenetrable, spiny thickets.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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WA - Local Web sites: CalFlora, CalPhotos,
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PNW Herbaria 
WildflowerSearch
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