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Asiatic Dayflower💧
Commelina communis
ツユクサ
An annual that produces vivid blue flowers from summer to autumn. The flowers are ephemeral, opening in the morning and closing by midday. The stems creep along the ground, rooting at the nodes. It has two prominent blue petals and one small white petal. Historically called "moon grass" (tsukikusa) in Japan, its blue sap was used to dye fabrics.
Identification Points
- ✓Two vivid blue petals plus one small white petal
- ✓Ephemeral flower that opens in the morning and closes by midday
- ✓Stems creep along the ground, rooting at the nodes
- ✓Leaves are lanceolate to ovate with a leaf sheath
Habitat
Roadsides, fields, grasslands, and gardens
Season
June–October (flowers)
3D Specimen Model
Kyushu University, Shikano Lab (CC0)
View on Sketchfab→Morphological TraitsAI-estimated, needs verification
Leaf arrangement
Alternate
Leaf type
Simple
Venation
Parallel
Leaf margin
Entire
Leaf shape
Needle
Growth form
Herb
Petal count
3 petals
Petal fusion
Free
Flower color
Blue
Flowering season
Summer–Autumn
Habitat
Roadside
Phylogenetic Positionツユクサ科 →
Phylogenetic Position
Angiosperms > Monocots > Commelinales > Commelinaceae
Divergence Era
Paleogene
Sources & References
AI-generated, needs verification