DIGITAL GARDEN

Cryptostegia grandiflora (R.Br.) Miers

Cryptostegia grandiflora is a flowering vine species known for its ornamental value, often referred to as the “Purple Allamanda” or “Rubber Vine.
Botanical Details:
Scientific Name: Cryptostegia grandiflora
Family: Asclepiadaceae
Genus: Cryptostegia
Species: grandiflora
Common Names:
o Purple Allamanda
o Rubber Vine
o Madagascar Rubber Vine
Common Names in Local Languages:
Malayalam: Rubber Vine (റബർ വൈൻ) or Kadambakam (കദമ്പകം) depending on the regional naming conventions.
Tamil: Rubber Vine (ரப்பர் வைன்) or Kanchanampoo (கஞ்சனாபூ).
Synonyms:
• Allamanda grandiflora
• Cryptostegia madagascariensis
• Vinca grandiflora
Botanical Description:
• Habit: It is a vigorous, woody, and fast-growing climbing vine.
• Leaves: The leaves are simple, glossy, and dark green, opposite in arrangement, elliptical to ovate in shape.
• Flowers: The flowers are large, showy, and typically bright purple, funnel-shaped, with a pleasant fragrance. They bloom in clusters.
• Fruit: The fruit is a large, elongated, cylindrical pod containing seeds attached to silky, white hairs that aid in wind dispersal.
• Habitat: Native to Madagascar, the plant prefers tropical and subtropical climates and is often used as an ornamental vine in gardens and landscapes.
Uses:
• Ornamental: Cryptostegia grandiflora is primarily used for ornamental purposes in gardens, fences, and as a ground cover in tropical and subtropical climates.
• Medicinal Uses: Some parts of the plant are used traditionally in folk medicine, though it should be used cautiously as some parts may be toxic if consumed.
• Erosion Control: Its vigorous growth makes it useful for controlling soil erosion in tropical regions.
• Landscape Uses: Often planted on trellises, fences, or as a decorative ground cover.