Cockle Burr

Image: Wikimedia Commons (See link for license)

Cockle Burr🌼

Xanthium occidentale

オオオナモミ

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キク科草本一年草帰化植物ひっつき虫外来種

An annual herb of the Asteraceae family native to North America, naturalized on riverbanks and wastelands. Its fruits bear hooked spines that disperse by attaching to animals and clothing.

Identification Points

  • ✓葉は広卵形で粗い鋸歯
  • ✓果実は鉤状のとげに包まれ「ひっつき虫」
  • ✓オナモミより大型

Habitat

河原・荒地・道ばた（帰化）

Season

8〜10月（花）

3D Specimen Model

Kyushu University, Shikano Lab (CC0)

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Morphological TraitsAI-estimated, needs verification

Petal count

3 petals

Ovary position

Inferior

Stamen count

1-2

Phylogenetic Positionキク科 →

Phylogenetic Position

Angiosperms > Eudicots > Core eudicots > Asterales > Asteraceae

Divergence Era

Late Cretaceous to Paleogene (approx. 80–70 million years ago)

View キク科 page🌿 View in taxonomy
📚野草図鑑（ナツメ社）📚山野草図鑑（朝日新聞出版）

Sources & References

🤖Claude AI

AI-generated, needs verification