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Flowering rush family
Butomaceae Rich.
ハナイ科
A family of aquatic and wetland plants native to Eurasia. A monotypic family consisting of a single species, Butomus umbellatus (flowering rush). Flowers are an attractive pink, forming umbel-like inflorescences, and the plant is sometimes cultivated as an ornamental. It has been recorded as a naturalized species in Japan.
Key Characteristics
- ●Leaves elongated and triangular in cross-section, erect
- ●Flowers trimerous, pink, with 6 tepals
- ●Umbel-like inflorescence bearing numerous flowers
- ●Perennial growing in waterside and wetland habitats
Morphological Traits
A family may include species with different trait values — multiple values indicate the range within the family.
Leaf arrangement
Alternate
Leaf type
Simple
Venation
Parallel
Leaf margin
Entire
Growth form
Herb
Evergreen/Deciduous
Deciduous
Leaf dissection
Undivided
Latex
Present
Flower symmetry
Actinomorphic
Petal count
6 petals
Petal fusion
Free
Ovary position
Superior
Plant sex
Hermaphrodite
Phylogenetic Position
Angiosperms > Monocots > Alismatales > Butomaceae
Divergence Era
Late Cretaceous to Paleogene (ca. 85 million years ago)
Representative Genera
Related Evolution Events
- ・Emergence as an early-diverging lineage of monocot aquatic plants
- ・Adaptation to waterside environments and evolution of umbel-like inflorescences
Plants in Flowering rush family on this site
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