Styrax obassia

Styrax obassia

  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Styrax obassia
  • Flower name
    Styrax obassia
  • Scientific name
    Styrax obassia
  • Aliasオオバジシャ, 白雲木, 大葉萵苣
  • Place of originJapan
  • Place of floweringGarden, Botanical Gardens, Park, Streets, Planting
  • Flowering seasonApril, May

What is Styrax obassia

Hakuunboku (scientific name: Styrax obassia) is native to Japan and China and is a deciduous tree of the family Styracaceae. In Japan, during the consecutive holidays in May, the 15 to 20 number's small white flowers are bloomed downwards, extending the inflorescences from the branches. The corolla is a cup shape and its tip is split at 5 points. After flowering, it will be scattered in about a week. A lot of small fruits are formed after the flowers, and the flowers do not fall down until the flowers come out again the following year. Flower name is like a white cloud blossoming in bloom to a white cloud which flew in the sky. Egonoki belonging to the same flower family (Python, scientific name: Styrax japonica). Egonoki (S. japonica) is also called Jisha. How to distinguish between leaves is larger in S. obassia than in Egonoki. Leaf shape, Hakuunboku(S. obassia) is rounded, Egonoki (S. japonica) is slender. Flower pattern, Hakuunboku (S. obassia) is short, Egonoki (S. japonica) is long. Applications are garden trees, park trees, street trees, materials to be rolled.

Generic name: Hakuunbok (Baiyun Thu), Scientific name: Styrax obassia, Origin: Japan, China, tree height: 5 to 15 m, tree diameter: 25 cm, bark color: dark gray, leaves: single leaf, leaf order: alternate, leaf height: 10 to 20 cm, leaf width: 8 to 20 cm, leaf shape: Behind: the star bristles are dense and white green and the veins stand out, petiole: 1 to 2 cm, hairy, leaf margin: tooth sawtooth, radial symmetry, inflorescence form: general inflorescence, inflorescence length: 8 to 17 cm, stamen length : 10, number of pinch: 1, flower color: white, flowering period: early May, flower length: 1.7 to 2.0 cm, fruit type: fruit shape, fruit shape: spherical shape, seed period: September.


  • Eye
    Ericales
  • Family
    Styracaceae
  • Genus
    Styrax
  • Species
    S. obassia
  • Type of flower
    Radial symmetrical flower
  • Array of flower
    Gross inflorescence
  • Petal shape
    Cup-shaped
  • Leaf type
    Round
  • Edge of the leaf
    Serrated
  • Life typeDeciduous small trees
  • Flower colorsWhite
  • Colors of the leavesGreen
  • Fruit colorGreen
  • Height500.0 ~ 1500.0 cm
  • Diameter of flower1.0 ~ 2.0 cm

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