Hypericum yojiroanum

Hypericum yojiroanum

  • Hypericum yojiroanum
  • Hypericum yojiroanum
  • Flower name
    Hypericum yojiroanum
  • Scientific name
    Hypericum yojiroanum
  • Alias大雪ヒナオトギリ, 大雪雛弟切, タイセツヒナオトギリ
  • Place of originendemic to Daisetsuzan (Japan)
  • Place of floweringHigh mountain, Specific area
  • Flowering seasonJune, July, August

What is Hypericum yojiroanum

Hypericum yojiroanum or Daisetsu Hina Otogiri (scientific name: Hypericum yojiroanum), endemic to Daisetsuzan (Japan), is a small, cold-resistant perennial herb of the genus Hypericum (Hypericaceae). It grows naturally in the geothermal wetlands of Daisetsuzan. The stems spread out as if crawling on the ground. The leaves are ovate and rounded with black and bright spots on the margins. In summer, the inflorescence grows and produces 3 to 5 sparse yellow flowers. The petals and sepals have black spots. The leaves turn red in autumn.

Common name: Hypericum yojiroanum or Daisetsu Hina Otogiri , scientific name: Hypericum yojiroanum, native to Daisetsuzan (Japan), life form: geothermal wetlands, herb size: 3 to 8 cm, life form: perennial, leaf color Green to red (autumn color), Leaf length: 1 cm, Leaf shape: inverted ovate, Leaf margin: wavy, Phyllotaxis: opposite, Flower diameter: 1 cm, Flower color: yellow, Fruit type: capsule, Flowering season: June to August, Use: rock garden, ground cover, Notes: Endangered IA.


  • Order
    Malpighiales
  • Family
    Hypericaceae
  • Genus
    Hypericum
  • Species
    H. yojiroanum
  • Type of flower
    Radial symmetrical flower
  • Array of flower
    Cluster inflorescence
  • Petal shape
    Five-petal
  • Leaf type
    Inverted ovoid
  • Edge of the leaf
    Wavy
  • Life typesmall, cold-resistant perennial herb
  • Flower colorsYellow
  • Colors of the leavesRed Green
  • Fruit color
  • Height3.0 ~ 8.0 cm
  • Diameter of flower1.0 ~ 1.0 cm

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