Cyathea mertensiana

Cyathea mertensiana

  • Cyathea mertensiana
  • Cyathea mertensiana
  • Cyathea mertensiana
  • Cyathea mertensiana
  • Flower name
    Cyathea mertensiana
  • Scientific name
    Cyathea mertensiana
  • Alias
  • Place of originTokyo (Japan)
  • Place of floweringGreenhouse, Specific area
  • Flowering season

What is Cyathea mertensiana

Maruhachi, scientific name:Cyathea mertensiana, is an evergreen large tree ferns of the Cyatheaceae department ,of Cyathea genus endemic to Ogasawara. Upright stem height is 5 ~ 10 meters or higher. Plant name has been named from the things that look like upside-down, "○" in Kanji "8"-shaped marks on the surface of the stem leaves have fallen. To the stem tip leaves the crowding to the coronary.

Generic name: Maruhachi,scientific name:Cyathea mertensiana, origin: Ogasawara Islands, environments: forest of sunny sward, height: 5-12 m, upright, leaf color: green, leaf blade length: 2 m
Petiole length: 30-70 cm, leaf shape: envelope membrane twice with pinnately compound leaves wrapped in deep lobed, margin: wavy, solus: brown ~ straw color, long, linear lanceolate.


  • Eye
    Cyatheales
  • Family
    Cyatheaceae
  • Genus
    Cyathea
  • Species
    C. mertensiana
  • Type of flower
  • Array of flower
  • Petal shape
  • Leaf type
    2 times pinnate compound leaf
  • Edge of the leaf
    Wavy
  • Life typeEvergreen large tree ferns
  • Flower colorsYellow
  • Colors of the leavesGreen
  • Fruit colorGreen
  • Height500.0 ~ 1200.0 cm
  • Diameter of flower ~ cm

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