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Norfolk Island Pine
Araucaria heterophylla
ナンヨウスギ
An evergreen conifer native to Norfolk Island, cultivated in Japan in warm areas and as an indoor foliage plant. Distinguished by its neat triangular silhouette, it is also used as a Christmas tree.
Identification Points
- ✓Perfectly symmetrical triangular silhouette
- ✓Branches whorled horizontally in regular tiers
- ✓Leaves needle-like on young trees, scale-like on mature trees
Habitat
Parks and coastal areas in warm regions; indoors (as a foliage plant)
Season
Year-round (ornamental)
Morphological TraitsAI-estimated, needs verification
Evergreen/Deciduous
Evergreen
Leaf arrangement
Whorled
Leaf shape
Needle
Growth form
Tree
Leaf type
Simple
Venation
Parallel
Leaf margin
Entire
Petal fusion
No petals
Stipules
Absent
Ovary position
Superior
Aromatic
Aromatic
Phylogenetic Positionナンヨウスギ科 →
Phylogenetic Position
Gymnosperms > Conifers > Pinales > Araucariaceae
Divergence Era
Late Mesozoic Triassic to Jurassic (approx. 200 million years ago onward)
Evolution Notes
Araucariaceae is an ancient gymnosperm family predating the Cretaceous; the morphological similarity between Jurassic fossil species and extant species is remarkable.
View on evolution timeline →Sources & References
AI-generated, needs verification