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Philydrum
Philydrum lanuginosum
タヌキアヤメ
An aquatic perennial herb distributed from East Asia to Australia; in Japan, found in western Honshu, Shikoku, and Kyushu. It grows in wetlands and around rice paddies, bearing yellow flowers in spike-like inflorescences in summer.
Identification Points
- ✓Leaves flat, linear, arranged in 2 ranks at the base
- ✓Numerous yellow flowers in spike-like inflorescences
- ✓A monocot growing in wetlands to waterside habitats
Habitat
Wetlands, rice paddies, and around ponds and marshes
Season
July–September (flowers)
Morphological TraitsAI-estimated, needs verification
Growth form
Herb
Leaf shape
Linear
Habitat
Aquatic
Leaf arrangement
Alternate
Leaf type
Simple
Venation
Parallel
Leaf margin
Entire
Petal count
6 petals
Stipules
Absent
Leaf dissection
Undivided
Flower symmetry
Zygomorphic
Ovary position
Superior
Plant sex
Hermaphrodite
Phylogenetic Positionタヌキアヤメ科 →
Phylogenetic Position
Angiosperms > Monocots > Commelinales > Philydraceae
Divergence Era
Paleogene
Evolution Notes
Philydraceae occupies an independent lineage among monocots and is phylogenetically significant as a small family adapted to aquatic environments.
View on evolution timeline →Sources & References
AI-generated, needs verification