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Term
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Definition
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petiole
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A leaf stalk arrangement.
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pinnate
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Feather formed; of a compound leaf in which the leaflets are place on each side
of the common axis.
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raceme
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An unbranched, cluster of flowers with the oldest flowers at the base.
up.
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rhizome
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Creeping underground stems.
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scalloped
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Curved projections with sharp depressions on edge of a leaf.
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sepal
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A member of the outside ring of a modified flower leaves, usually green.
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sessile
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Arrangement of plant without a stalk.
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shrub
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Woody plant, branched from the base.
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spike
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Unbranched inflorescence with sessile flowers.
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Stalk
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Secondary stem, often referring to the structure supporting the flower.
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stolon
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Elongated stem lying along the ground (runner), forms new roots and stems.
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subalpine
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Area just below the timberline.
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teeth
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Alternating projections and indentations on the edge of a leaf.
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twig
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In woody plants, the smallest segment, produced during the last growing season.
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umbrel
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Inflorescence with three of more stalks radiating from a common point.
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vein
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Vessels by which water and nutrients are transported. Often seen in leaves.
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whorl
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An arrangement in rings of three or more.
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