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Wood Sorrel
Oxalis corniculata
カタバミ
A small perennial herb commonly found along roadsides and in gardens, with three heart-shaped leaflets. Tolerant of trampling and regenerates from roots even after weeding. Bears small yellow 5-petaled flowers. The leaves have a sour taste (due to oxalic acid) and were once chewed by children.
Identification Points
- ✓Three heart-shaped leaflets (trefoil)
- ✓Leaves fold closed at night or in cloudy weather (nyctinasty)
- ✓Small yellow 5-petaled flowers
- ✓Elongated horn-shaped capsules
Habitat
Roadsides, gardens, fields, between paving stones
Season
April to October (flowers)
Morphological TraitsAI-estimated, needs verification
Leaf arrangement
Alternate
Leaf type
Compound
Venation
Pinnate
Leaf margin
Entire
Leaf shape
Cordate
Growth form
Herb
Petal count
5 petals
Petal fusion
Free
Flower color
Yellow
Habitat
Roadside
Stipules
Absent
Flower symmetry
Actinomorphic
Ovary position
Superior
Plant sex
Hermaphrodite
Stamen count
5
Phylogenetic Positionカタバミ科 →
Phylogenetic Position
Angiosperms > Eudicots > Oxalidales > Oxalidaceae
Divergence Era
Late Cretaceous to Paleogene
Sources & References
AI-generated, needs verification