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Pipewort
Eriocaulon cinereum
ホシクサ
A small annual growing in rice paddies and wetlands. In autumn, it produces white, cottony button-like flower heads on slender stalks. Populations have declined in recent years due to paddy field drainage and conversion.
Identification Points
- ✓Small white button-like flower heads (appearing star-shaped) on slender stalks
- ✓Linear leaves spread in a basal rosette on the ground
- ✓A small plant growing at the waterside in rice paddies and wetlands
Habitat
Rice paddies, wetlands, and pond margins
Season
August–November (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 fusion
Free
Leaf dissection
Undivided
Ovary position
Superior
Phylogenetic Positionホシクサ科 →
Phylogenetic Position
Angiosperms > Monocots > Poales > Eriocaulaceae
Divergence Era
Paleogene
Evolution Notes
Eriocaulaceae is a monocot lineage specialized for wetland and paddy field environments, with the greatest species diversity in the tropics and subtropics.
View on evolution timeline →Sources & References
AI-generated, needs verification