Solanum pseudocapsicum
Solanum rostratum
Jerusalem cherry, Jerusalem- or winter-cherry, Jerusalem-cherry nightshade
buffalo berry, buffalo-bur, buffalobur nightshade, horned nightshade, spiny nightshade
petiolate;
petiole 0.2–1 cm;
blade simple, elliptic, 1–9 × 0.5–4.5 cm, margins entire, base acute to attenuate.
petiolate;
petiole 2–10 cm;
blade simple to twice-compound, ovate to elliptic, (2–)4–16 × 3–12 cm, margins lobed to 1–2 times divided with 2–4 main leaflets per side, leaflets with deep, rounded lobes, base truncate to subcordate.
leaf-opposed, unbranched, 1–8-flowered, 0.2–1 cm.
extra-axillary, unbranched, 5–12-flowered, 4–11 cm.
0.3–0.7 cm in flower, 0.8–1 cm and erect in fruit.
0.5–1.5 cm in flower, erect and 0.5–1.5 cm in fruit.
radially symmetric;
calyx somewhat accrescent, unarmed, 2.5–6 mm, glabrous to densely pubescent with dendritic hairs, lobes long-triangular;
corolla white, stellate, 1–1.5(–2.5) cm diam., without interpetalar tissue;
stamens equal;
anthers oblong, 3–4 mm, dehiscent by terminal pores that open into longitudinal slits;
ovary glabrous.
bilaterally symmetric;
calyx accrescent and tightly covering fruit, densely prickly or bristly, 7.5–12.5 mm, densely stellate-pubescent, lobes linear to lanceolate;
corolla yellow, rotate-pentagonal, 1.5–3.5 cm diam., with abundant interpetalar tissue;
stamens unequal, lowermost much longer and curved;
anthers narrow and tapered, dehiscent by terminal pores, short anthers 4, yellow, 6–8 mm, longer anther reddish or purplish, 10–14 mm;
ovary glabrous.
yellow to orange or red, globose, 1–2 cm diam., glabrous, without sclerotic granules.
brown, globose, 1–1.2 cm diam., glabrous, dry, without sclerotic granules.
yellowish, flattened with thickened margins, 3–4 × 2.5–3 mm, minutely pitted.
dark brown, flattened, 2–3 × 1.8–2 mm, minutely pitted and irregularly ridged.
= 24.
= 24.
Solanum pseudocapsicum
Solanum rostratum
Solanum pseudocapsicum is native from Mexico to Argentina, southern Brazil, and Uruguay. It is grown as an ornamental for its showy fruits, especially around Christmas. It occasionally escapes from cultivation in southern Florida and Texas. In Texas, it has become established and fairly common in Austin, in the Lower Rio Grande Valley, and in Goliad and Caldwell counties. Cultivated forms are usually glabrous, but some can have branched pubescence. The fruits are mildly poisonous when ingested by humans but can be highly toxic to dogs and some birds.
Solanum pseudocapsicum, along with S. diphyllum, has a distinctive leaf arrangement in which a longer, narrower leaf is paired with a shorter, often more rounded one.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Solanum rostratum is widespread in the central Mexican highlands from Chihuahua and Coahuila to Puebla and Oaxaca, and its native range likely extends from Mexico City north to the United States Great Plains. It is widely introduced outside this presumed area of origin.
Solanum rostratum is considered a noxious weed in several states. It is often invasive in gardens, pastures, and disturbed areas. The plants are extremely spiny, and there are reports of pigs being poisoned by eating the berries and roots. This species is thought to be the original host of the Colorado potato beetle (Leptinotarsa decemlineata) before potatoes were widely cultivated in the western and central United States. The beetle then adopted potatoes as its primary host and rapidly spread eastward.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
- Local floras:
BC, 
CA, 
OR, 
WA - Local Web sites: CalFlora, CalPhotos,
Flora NW, 
Go Botany, 
IL Wildflowers, 
KS Wildflowers, 
LA Plants, 
MD Biodiversity, 
MI Flora, 
MN Wildflowers, 
MO Plants, 
PNW Herbaria 
WildflowerSearch
iNaturalist (observations)
USDA Plants Database- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
