Rough belladonna (Atropa aspera)

Rough deadly nightshade Rough-leafed belladonna
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Atropa aspera - Rough-Leafed Belladonna Botanical Profile

Characterized by its rough, textured foliage, Atropa aspera persists as a hardy perennial herb in specialized mountainous environments. This wild species stands out within its genus due to the scabrid surface of its leaves and stems. Scientific interest focuses on its ecological resilience and toxicological properties.

Taxonomy

  • ∟ царство Plantae
  • ∟ division Tracheophytes (Vascular Plants)
  • ∟ subdivision Spermatophytes (Seed plants)
  • ∟ Angiosperms
  • ∟ mesangiosperms (Core angiosperms)
  • ∟ eudicots
  • ∟ asterids
  • ∟ order Solanales
  • ∟ family Solanaceae
  • ∟ subfamily Solanoideae
  • ∟ tribe Hyoscyameae
  • ∟ genus Atropa (Belladonna)
  • ∟ species Atropa aspera (Rough belladonna)

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Morphology

The vegetative structures of this species are notably rough to the touch, owing to fine hairs or epidermal structures. Stems are sturdy, erect, and heavily branched, supporting large leaves with prominent venation. The flowers are typically bell-shaped with dull purple or brownish tones.

Key structural components include:

  • Foliage: Scabrid, ovate leaves with a rough texture on both surfaces.
  • Inflorescence: Solitary, axillary flowers that droop downwards.
  • Calyx: Five-lobed, expanding slightly as the fruit develops.
  • Berries: Shiny, spherical fruits containing numerous small seeds.

Flowering season

July to September

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Applications

This plant is not cultivated for ornamental or culinary purposes due to its extreme toxicity. It serves as a subject of study in organic chemistry and botany to understand the biosynthesis of tropane alkaloids. Researchers examine these compounds for their antispasmodic and anticholinergic properties under strictly controlled laboratory conditions.

Interesting facts

The specific epithet aspera refers directly to the rough texture of the plant's surfaces, which may serve as a physical defense mechanism against herbivores. Despite its toxicity, certain specialized insects have adapted to feed on its leaves without suffering ill effects.

Geography of distribution

  • Южная Европа
  • Умеренная Азия

Sources

  • Plants of the World Online (POWO)
  • World Flora Online (WFO)
  • International Plant Names Index (IPNI)

Technical Information

External Databases: GBIF, POWO, Tropicos

See also

Deadly Nightshade

Deadly Nightshade

Atropa bella-donna

Atropa bella-donna, commonly known as deadly nightshade, is a highly toxic perennial herbaceous plant in …

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Yellow belladonna

Yellow belladonna

Atropa lutea

A rare, yellow-flowered perennial herb related to the deadly nightshade, belonging to the Solanaceae family.

Read more →