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Ginger🌿
Zingiber officinale
ショウガ
A perennial herb native to tropical Asia, believed to have been introduced to Japan during the Yayoi period. The underground rhizome contains pungent and aromatic compounds (gingerol and shogaol) and is widely used as a condiment, herbal medicine, and in processed foods. Kochi Prefecture is Japan's largest production area. It is also used to combat cold sensitivity due to its body-warming effect.
Identification Points
- ✓Underground rhizome is irregularly swollen with pale yellow cross-section
- ✓Leaves are lanceolate and elongated, arranged in two ranks (distichous)
- ✓Distinctive structure where leaf sheaths enclose the stem
- ✓Flower stalks emerge from the base in summer–autumn, bearing yellow-green to pale yellow flowers
- ✓Distinctive pungency and aroma
Habitat
Warm, humid farmland and home gardens; frost-sensitive, suited to warm regions
Season
October–November (rhizome harvest)
Morphological TraitsAI-estimated, needs verification
Leaf arrangement
Alternate
Leaf type
Simple
Venation
Parallel
Leaf margin
Entire
Leaf shape
Needle
Growth form
Herb
Habitat
Cultivated
Petal count
6 petals
Leaf dissection
Undivided
Flower symmetry
Zygomorphic
Ovary position
Inferior
Plant sex
Hermaphrodite
Stamen count
3-4
Phylogenetic Positionショウガ科 →
Phylogenetic Position
Angiosperms > Monocots > Zingiberales > Zingiberaceae
Divergence Era
Late Cretaceous to Paleogene (from about 80 million years ago)
Evolution Notes
Zingiberaceae is a specialized group among monocots, diverging from other monocots approximately 80 million years ago. Nutrient storage in rhizomes and aromatic compounds represent adaptations to tropical environments.
View on evolution timeline →Sources & References
AI-generated, needs verification