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Alismataceae Ventenat
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habit
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woody plants, herbaceous plants
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important diagnostics
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aquatic plants, leaves floating or submerged, chlorophyll absent, milky juice present, cladodes or phyllodes
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hairs
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stellate, stellate
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distribution
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African, Asian, Australian and Oceanian, European, North American, South American
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leaf: position
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alternate, distichous
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leaf: nature
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not compound
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leaf: venation
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longitudinal in leaves or leaflets, palmate in leaves or leaflets
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margin
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with entire margin
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leaf: stipules
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absent
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inflorescence
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solitary, raceme, umbel, compound, sympodial or monopodial
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flower: sexuality
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bisexual, unisexual
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flower: symmetry
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actinomorphic
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flower: receptacle
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small, enlarged, conical or hemispherical
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flower: disc
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absent
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flower: perianth number
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3, 6
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flower: perianth nature
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perianth of similar segments, perianth of calyx and corolla
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flower: sepal number
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3
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flower: sepal position
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all free from one another
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flower: sepal nature
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sepals imbricate or contorted
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flower: petal number
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0, 3
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flower: petal position
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all free from one another, petals imbricate
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stamen: number
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3, 6, 9, 11+
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stamen: anthers
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dorsifixed or ventrifixed, basifixed, extrorse, opening by longitudinal slits
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stamen: filaments
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free from the corolla, not connate
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pistil: style
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styles absent, stigmas sessile, style 1, or styles more or less connate, style gynobasic
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pistil: carpel
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3, 4, 5, 6+
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pistil: ovary
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1-locular
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pistil: ovule
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1 in each loculus, 2 in each loculus, 3+ in each loculus
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pistil
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carpels free from each other or carpel 1, ovules attached to the central axis or ventrally in apocarpae, ovules attached to the base of the ovary
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fruit: type
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a capsule, a nut
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fruit: seed
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1 seed, 2 seeds, 3+ seeds
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seed: embryo
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curved
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seed: endosperm
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seeds without endosperm
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