Wavy-stemmed Belladonna (Atropa flexuosa)

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Atropa flexuosa: Morphology, Growth Habit, and Toxicity

Featuring distinctive zigzag stems, Atropa flexuosa showcases a unique vegetative growth pattern among wild species of its genus. This plant grows in shady forest clearings and rocky woodlands.

Its tissues contain high concentrations of tropane alkaloids, rendering every part of the plant highly toxic. This chemical profile deters herbivores and makes the species a subject of phytochemical interest.

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 flexuosa (Wavy-stemmed Belladonna)

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Morphology

The morphology of this species reflects its adaptation to complex forest environments. Its primary organs display several defining characteristics:

  • Stems: Notably flexuous or zigzagged stems that change direction at each node.
  • Leaves: Ovate to lanceolate, alternate leaves with slightly wavy margins and distinct venation.
  • Flowers: Bell-shaped, nodding flowers with dull purple or greenish-purple corollas.
  • Fruit: Fleshy, spherical berries that turn glossy black upon reaching maturity.

Flowering season

Late spring to mid-summer

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Dec

Applications

Chemical analysis of this plant focuses on the isolation of tropane alkaloids for research purposes. These metabolites are utilized in comparative studies of secondary plant chemistry.

No agricultural or commercial cultivation exists for this species due to its high toxicity. Its use is confined strictly to scientific and botanical research settings.

Interesting facts

The specific epithet flexuosa describes the winding, zigzag pattern of its stems. This growth form helps the plant navigate surrounding vegetation to reach filtered sunlight.

Like other toxic wild species, it plays a role in its local ecosystem by interacting with specialized leaf-mining insects. These insects have adapted to tolerate its chemical defenses.

Geography of distribution

  • Colombia
  • Ecuador
  • Peru
  • Venezuela

Sources

  • Plants of the World Online (POWO)
  • World Flora Online (WFO)
  • Global Biodiversity Information Facility (GBIF)

Technical Information

External Databases: 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 →