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Dipterocarp
Vatica mangachapoi
リュウキュウガキ
An evergreen tall tree distributed in Okinawa and the Southwest Islands. Dipterocarpaceae constitutes the dominant tree family of Southeast Asian tropical rainforests; in Japan, only a few species occur in the Southwest Islands. The fruit develops wing-like calyx lobes.
Identification Points
- ✓Fruit with 2 wing-like enlarged calyx lobes
- ✓Leaves coriaceous, ovate-elliptic, and glossy
- ✓Grows into a large tall tree
Habitat
Evergreen broadleaf forests of Okinawa and the Southwest Islands
Season
April–May (flowers)
Morphological TraitsAI-estimated, needs verification
Growth form
Tree
Evergreen/Deciduous
Evergreen
Leaf shape
Round
Leaf arrangement
Alternate
Leaf type
Simple
Venation
Pinnate
Leaf margin
Entire
Petal count
Many
Stipules
Present
Leaf dissection
Undivided
Flower symmetry
Actinomorphic
Plant sex
Hermaphrodite
Stamen count
5
Phylogenetic Positionフタバガキ科 →
Phylogenetic Position
Angiosperms > Eudicots > Core eudicots > Malvales > Dipterocarpaceae
Divergence Era
Late Cretaceous (ca. 80 million years ago)
Evolution Notes
Dipterocarpaceae is the principal family of Dipterocarpales; winged fruits are an adaptation for long-distance wind dispersal, forming dominant species assemblages in Southeast Asian tropical rainforests.
View on evolution timeline →Sources & References
Needs review