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Gramineae A. L. Jussieu
= Poaceae
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habit
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woody plants, herbaceous plants
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important diagnostics
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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
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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, lobed or divided, 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, 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, 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
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flower: perianth number
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0, 2, 3
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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, 2, 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
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stamen: number
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1, 2, 3, 4, 6
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stamen: anthers
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basifixed, opening by longitudinal slits, opening by apical pores
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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 more than 1, free, style 1, or styles more or less connate
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pistil: carpel
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1
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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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carpels free from each other or carpel 1, 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
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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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