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Cyperaceae A. L. Jussieu
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habit
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woody plants, herbaceous plants
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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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opposite or verticillate, alternate, distichous
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leaf: nature
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not 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
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margin
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with entire margin, dentate
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leaf: glands/ligule
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with a ligule
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leaf: stipules
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absent
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inflorescence
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spike, umbel, head, 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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zygomorphic or irregular
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flower: receptacle
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small
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flower: disc
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absent, present
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flower: perianth number
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0, 1, 2, 3, 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, 1, 2, 3, 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
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stamen: number
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1, 2, 3, 6, 8, 11+
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stamen: anthers
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basifixed, introrse, 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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stamen: other characters
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anthers with a conspicuous appendage
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pistil: gynophore
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present
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pistil: style
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styles absent, stigmas sessile, styles more than 1, free, style 1, or styles more or less connate
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pistil: carpel
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2, 3
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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
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pistil
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ovules axile, carpels connate, 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 nut
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fruit: seed
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1 seed
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seed: embryo
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straight
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seed: endosperm
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seeds with endosperm
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