Usagigiku

Arnica unalascensis var. tschonoskyi

  • Usagigiku
  • Usagigiku
  • Usagigiku
  • Usagigiku
  • Usagigiku
  • Usagigiku
  • Usagigiku
  • Usagigiku
  • Flower name
    Usagigiku
  • Scientific name
    Arnica unalascensis var. tschonoskyi
  • Alias兎菊, キングルマ
  • Place of originJapan, Chishima, and Aleutian
  • Place of floweringHigh mountain
  • Flowering seasonJuly, August

What is Usagigiku

Usagigiku (scientific name: Arnica unalascensis var. Tschonoskyi) is native to Japan, Chishima, and Aleutian and is an alpine perennial in the family Asteraceae.
In Japan, it grows naturally on alpine meadows Hokkaido to north of Chubu.
The plant height is low, and the flower is a single flower with a yellow head flower. The leaves are green spatula and have 5 veins.
The flower name is a plant of the Asteraceae family, and the opposite leaves look like rabbit ears.
It is also called 'King Luma' because it has a yellow tongue flower that surrounds a yellow, round, cylindrical flower in the center.
The parent species in the naming is Ezorabiku (Ezo rabbit chrysanthemum, scientific name: Arnica unalascensis) and is similar.
The difference between the two is that the tubular part of the tubular flower is hairy, which is rabbit chrysanthemum (A. unalascensis var. Tschonoskyi), and the hairless part is Ezo rabbit chrysanthemum (scientific name: Arnica unalascensis).
The variable name 'tschonoskyi' is dedicated to Chonosuke Sugawa.

Detailed information about rabbits


General name: Usagigiku, Scientific name: Arnica unalascensis var. Tschonoskyi,
Plant height: 15 to 35 cm, flower diameter: 4 to 4.5 cm, leaf shape: spatula, 5 veins, phyllophyte: opposite,
Flower color: yellow, inflorescence: single flower, corolla: head flower, flower diameter: 4 to 4.5 cm, flowering period: July to August,
Fruit type: thin.

References 3>
Literature: "Japanese Alpine Plants" YAMA-KEI Publishers Co. Ltd.


  • Eye
    Asterales
  • Family
    Asteraceae
  • Genus
    Arnica
  • Species
    A. unalascensis
  • Type of flower
    Radial symmetrical flower
  • Array of flower
    Monopetal inflorescence
  • Petal shape
    Head flower
  • Leaf type
    Spatula-shaped
  • Edge of the leaf
    Serrated
  • Life typealpine perennial
  • Flower colorsYellow
  • Colors of the leavesGreen
  • Fruit colorGreen
  • Height15.0 ~ 35.0 cm
  • Diameter of flower4.0 ~ 4.5 cm

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