Octopus Tree

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Octopus Tree

Hernandia nymphaeifolia

ハスノハギリ

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ハスノハギリ科WoodyEvergreen tall treeOgasawaraOkinawaCoastal forestOcean-current dispersal

An evergreen tall tree growing near coasts in the Ogasawara and Ryukyu Islands. Named for its large circular leaves resembling lotus leaves. It produces white flowers and distinctive fruits enclosed in balloon-like involucral bracts.

Identification Points

  • Leaves are large, circular to reniform, resembling lotus leaves
  • Fruits have a distinctive shape, enclosed in balloon-like involucral bracts
  • Wood is light and white (corky)

Habitat

Coastal and lowland forests of the Ogasawara and Ryukyu Islands

Season

May–July (flowers)

Morphological TraitsAI-estimated, needs verification

Growth form

Tree

Evergreen/Deciduous

Evergreen

Leaf shape

Round

Habitat

Coastal

Leaf arrangement

Alternate

Venation

Palmate

Stipules

Absent

Flower symmetry

Actinomorphic

Ovary position

Inferior

Compound type

Palmate

Aromatic

Aromatic

Phylogenetic Positionハスノハギリ科

Phylogenetic Position

Angiosperms > Magnoliids > Laurales > Hernandiaceae

Divergence Era

Late Cretaceous to Paleogene (ca. 80 Ma onwards)

Evolution Notes

Hernandiaceae belongs to the order Laurales, a relatively ancient lineage. Its lightweight fruits are adapted for ocean current dispersal, enabling wide distribution across tropical and subtropical islands.

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📚樹木図鑑(ナツメ社)

Sources & References

🤖Claude AI生成(未確認)

AI-generated, needs verification