american black nightshade

Solanum americanum

Member of black nightshade complex (complex Solanum nigrum)
nightshades (genus Solanum)
nightshade family (family Solanaceae)
dicots (class Magnoliopsida)
white in flowering plants

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• corolla: 5–8 mm diameter including lobes, white
• anthers 1.4–2.2 mm
• style not strongly exerted beyond anthers
• note that the style-to-anther ratio listed in Jepson is similar in all white nightshades, but this one has longer filaments
• infloresence typically umbel-like, but rarely highly branched
• leaf: 2–15 cm, entire to coarsely wavy-toothed
• hairs: ± 0 or short, ± appressed or curved, nonglandular
• fruit: glossy w/ sepals reflexed

Toxicity of deadly nightshade (Solanum spp.):
4 – Ingestion of these plants, especially in large amounts, is expected to cause serious effects to the heart, liver, kidneys or brain. If ingested in any amount, call the poison center immediately.

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Chris’s observations: 18 (15 are research grade)

Locations:

• Bear Creek Redwoods OSP: 2
• El Corte de Madera OSP: 2
• Butano SP
• Dr. Aurelia Reinhardt Redwood RP
• Henry Cowell Redwoods SP
• Henry Cowell Redwoods SP - Fall Creek Unit
• Jacks Peak CP
• Joaquin Miller Park, Oakland
• Lake Chabot RP
• Mt. Diablo SP
• Nisene Marks SP
• Pinnacles NP
• Russian Ridge OSP
• Sam McDonald CP
• Sanborn CP
• Wunderlich CP

Months:

• May: 1
• Jun.: 1
• Jul.: 2
• Aug.: 2
• Sep.: 4
• Oct.: 3
• Nov.: 3
• Dec.: 0
• Jan.: 1
• Feb.: 1

For more details, use advanced search.

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Not all sites include this taxon:

• Solanum americanum → iNaturalist – Calflora – CalPhotos – Jepson eFlora
• not yet listed → FNA

Bay Area species: iNaturalist – Calflora