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Japanese AzaleaπΈ
Rhododendron kaempferi
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A deciduous shrub of Ericaceae widely native to mountains throughout Japan. In spring, it produces masses of vermilion-red flowers that paint mountain slopes red. It is one of the most widely distributed azalea species in Japan.
Identification Points
- βVermilion (orange-red) funnel-shaped flowers with dark red spots on the upper lobe
- βLeaves obovate, somewhat rigid, with spreading hairs on both surfaces
- βSemi-deciduous shrub with flowers clustered at branch tips
Habitat
Forest edges, rocky sites, and ridges from low mountains to subalpine zones
Season
AprilβJune (flowers)
Morphological TraitsAI-estimated, needs verification
Leaf arrangement
Alternate
Leaf type
Simple
Venation
Pinnate
Leaf margin
Entire
Leaf shape
Ovate
Growth form
Shrub
Evergreen/Deciduous
Deciduous
Petal count
5 petals
Petal fusion
Fused
Flower color
Red
Flowering season
Spring
Habitat
Mountain
Stipules
Absent
Leaf dissection
Undivided
Stamen count
3-4
Phylogenetic PositionγγγΈη§ β
Phylogenetic Position
Angiosperms > Eudicots > Core Eudicots > Ericales > Ericaceae
Divergence Era
Late Cretaceous (ca. 80 million years ago)
Evolution Notes
Ericaceae shows notable adaptation to acidic soils, thriving even in nutrient-poor environments through symbiosis with ericoid mycorrhizal fungi.
View on evolution timeline βSources & References
AI-generated, needs verification