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Araceae Juss.
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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, milky juice present, spiny stems or leaves
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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, ensiform
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leaf: nature
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not compound, compound, pinnately compound, ternately compound, palmately compound
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leaf: venation
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pinnate or hardly visible in leaves or leaflets., invisible or leaves 1-nerved, longitudinal in leaves or leaflets, palmate in leaves or leaflets
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margin
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with entire margin, lobed or divided, dentate
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leaf: stipules
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absent
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inflorescence
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spike
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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
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flower: disc
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absent
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flower: perianth number
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0, 4, 5, 6, 7+
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flower: perianth nature
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perianth of similar segments
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flower: sepal number
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0, 4, 5, 6+
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flower: sepal position
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all free from one another, connate
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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, 4, 5, 6, 7, 8, 9
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flower: petal position
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all free from one another, petals connate, petals imbricate
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stamen: number
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1, 2, 3, 4, 5, 6, 7, 8, 9
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stamen: symmetry
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the same number as and opposite the petals or alternate with the sepals
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stamen: anthers
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basifixed, introrse, extrorse, opening by longitudinal slits, opening by apical pores
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stamen: filaments
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free from the corolla, not connate, connate into 1 tube or bundle
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stamen: other characters
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anthers with a conspicuous appendage
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pistil: style
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styles absent, stigmas sessile, style 1, or styles more or less connate
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pistil: carpel
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1, 2, 3, 4, 5, 6+
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pistil: ovary
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1-locular, 2-locular, 3-locular, 4-locular, 5-locular, 6+ locules
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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 parietal, carpels connate, ovules axile, carpels connate, ovules attached to the central axis or ventrally in apocarpae, ovules attached to the apex of the ovary, ovules attached to the base of the ovary
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fruit: type
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a nut, fleshy
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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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straight, curved
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seed: endosperm
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seeds without endosperm, seeds with endosperm
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