Iwagirisou

Primulina fimbrisepala

  • Iwagirisou
  • Iwagirisou
  • Iwagirisou
  • Iwagirisou
  • Flower name
    Iwagirisou
  • Scientific name
    Primulina fimbrisepala
  • Alias岩桐草, プリムリナ・フィンブリセパラ, キリタ
  • Place of originJapan
  • Place of floweringOverseas
  • Flowering seasonMay, June

What is Iwagirisou

Iwagirisou (scientific name: Opithandra primuloides) is native to Japan, and is a summer green perennial of Gesneriaceae family. It spontaneously grows on rocky places and trees in the Kinki-west to Shikoku, Kyushu. It puts out a lot of root leaves from the rhizomes. In the early summer, several stems of flowers are stretched from between the leaves, and about 10 pieces of purplish red flowers are bloomed in a scattering inflorescence. The Japanese name grows on the rock and it depends on the leaves resembling paulownia.

Common name: Iwagirisou, Scientific name: Opithandra primuloides, also known as: Opithandra primuloides, origin: Japan, habitat distribution: Kinki west to Shikoku, Kyushu, Environment: rocky place and trees, plant length: 15-20 cm, leaf color: green, leaf shape: egg shape to wide ovoid, leaf height: 4-10 cm, petiole: the same length as leaves Inflorescence: leaf margin: blunt saw blade, flower color: red purple · white (variant), inflorescence: inflorescence, bilateral symmetry, flower stem length: 12-15 cm, corolla: funnellike lip shape Flower length: 2 cm, flowering period: May - June, stamens number: 2, calyx: 5 seeds, fruit type: fruits.


  • Order
    Lamiales
  • Family
    Gesneriaceae
  • Genus
    Opithandra
  • Species
    O. primuloides
  • Type of flower
    Left-right symmetrical flower
  • Array of flower
    Scattered inflorescence/ umbrella shape
  • Petal shape
    Funnel/trumpet shaped
  • Leaf type
  • Edge of the leaf
    Toothed
  • Life typePerennial green of summer
  • Flower colorsPurple
  • Colors of the leavesGreen
  • Fruit color
  • Height150.0 ~ 200.0 cm
  • Diameter of flower1.0 ~ 1.0 cm

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