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  Argyreia nervosa (Burm. f.) Bojer
  Family Name : Convolvulaceae

  Synonyms : Aniseia nervosus, Aniseia nervosa, Aniseia speciosus, Aniseia speciosa

  Common Names : Elephant Climber, Elephant Creeper, Wooly Morning Glory, Silver Morning Glory, Hawaiian Baby Woodrose, Sedang-dahon

 
  • Record Info
    • Featured in '1001 Garden Plants in Singapore' Book (2ed) :
      TRUE
  • Life Stage & Characteristics
    • Plant Division :
      Angiosperms (Flowering Seed Plants) (Dicotyledon)
      Mode of Nutrition :
      Autotrophic
      Maximum Height :
      9 m to 15 m
  • Biogeography
    • Native Distribution :
      India
      Preferred Climate Zone :
      Tropical
  • Description & Ethnobotany
    • Plant Morphology :
      [Others]: Growth Form: Woody perennial vine with a maximum length of 9 – 15 m long. Habitat: Grows along the banks of streams and rivers in dry tropical climates. Occurs at altitudes up to 300 m. This species may become invasive and cover trees. Stem: Young stem is silver and tomentose (densely covered by hairs). Foliage: Leaves cordate (length 15 – 25 cm, width 13 – 20 cm). Upper side of leaves is green and glabrous (smooth and hairless), while the lower side is silver and tomentose like young stems. Flowers: Produces pink or blue to purple, trumpet-shaped flowers (5 cm wide). Flowers are located at the tips and are arranged in inflorescences known as cymes. Fruits: Yellow-brown, dry round fruit (2 cm wide) classified as a berry. Each fruit holds 4 - 6 seeds. Landscaping: Planted in subtropical or tropical gardens for its attractive, large flowers. Can provide shade when trained to grow over a trellis. Makes an attractive cover for long railings.Cultivation: The vine is susceptible to root rot, so plant in soil with good drainage. Prefers acidic soils (pH = 5 - 6). Although mature plants prefer full sun, the seedlings grow best in partial shade. Easily becomes root-bound, so either plant in the ground or provide a very large pot, such as a 55-gallon drum. Grows quickly in Singapore under ideal conditions (3 - 5 cm per day). To promote abundant flowering, avoid pruning the tips. Propagation: Typically propagated by seed. Scarify the seeds to promote germination by cutting the seed coat with scissors or scratching it with a file. Soak the scarified seeds in water for 24 hours before planting. Can also propagate by stem cuttings. Etymology: The genus name “Argyreia” comes from the Latin word “argyraeus” which means silver-colored. It refers to the silver color of young stems and the underside of leaves. The species epithet “nervosa” refers to the hallucination induced by consuming the seeds. Alkaloids known as lysergic acid amides (LSA) are responsible for the hallucinations.
  • Landscaping Features
    • Desirable Plant Features :
      Ornamental Flowers, Ornamental Foliage
      Plant & Rootzone Preference/Tolerance :
      Well-Drained Soils, Fertile Loamy Soils
      Landscape Uses :
      General, Shade Providing Tree / Palm
      Usage Hazards / Cons :
      Invasive / Potentially Invasive, [Remarks] (Consuming the seeds causes hallucinations.)
  • Fauna, Pollination & Dispersal
    • Associated Fauna :
      Bird-Attracting
      Pollination Method(s) :
      Biotic (Fauna) (Insects (Bee))
      Seed / Spore Dispersal :
      Biotic (Fauna) (Associated with: Dispersed by birds.)
  • Plant Care & Propagation
    • Light Preference :
      Full Sun
      Water Preference :
      Moderate Water
      Plant Growth Rate :
      Fast
      Maintenance Requirements :
      Moderate
      Diseases :
      Root weevil (Diaprepes abbreviatus)
      Pest(s) :
      Associated with
      Propagation Method :
      Seed, Stem Cutting
  • Foliar
    • Foliage Retention :
      Evergreen
      Mature Foliage Colour(s) :
      Green
      Mature Foliage Texture(s) :
      Velvety / Furry / Tomentose
      Prominent Young Flush Colour(s) :
      [Remarks] (Silver)
      Foliar Type :
      Simple / Unifoliate
      Foliar Arrangement Along Stem :
      Alternate
      Foliar Shape(s) :
      Non-Palm Foliage (Cordate)
      Foliar Venation :
      Pinnate / Net
      Foliar Margin :
      Entire
      Foliar Apex / Tip :
      Acute
      Foliar Base :
      Cordate
      Typical Foliar Area :
      Macrophyll ( 182.25cm2 - 1640.25 cm2 )
  • Non-Foliar & Storage
    • Stem Type & Modification :
      Herbaceous
      Root Type :
      Underground (Tap Root)
  • Floral (Angiosperm)
    • Flower Colour(s) :
      Blue, Pink, Purple
      Flower Symmetry :
      Radial
      Individual Flower Shape :
      Trumpet-shaped
      Inflorescence Type :
      Cyme
      Flowering Period :
      Free-Flowering
      Flower Lifespan On Plant :
      Several Days
      Flowering Habit :
      Polycarpic
  • Fruit, Seed & Spore
    • Mature Fruit Colour(s) [Angiosperms & Gymnosperms] :
      Brown
      Fruit Classification :
      Simple Fruit
      Fruit Type :
      Fleshy Fruit (Non-Accessory Fruit: Berry)
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