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The underside of a leaf; which is the surface facing the ground.

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The upper side of a leaf; which is the surface which typically contains the most stomata. It is the surface which is enclosed within a rolled or folded leaf.

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Roots that develop from non-root tissues, such as nodes on rhizomes or stolons. They are not developments from primary and lateral roots.

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The internal structure and arrangement of plant features. This looks at plant cells and their arrangement into different plant tissues. Examples include: xylem; phloem; palisade cells; and sclerenchyma.

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The collective name for Stamens.

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A small feature at the end of a filament which contains and produces pollen.

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A plant that grows in an upward, but not upright, direction, which is typical of many shrubs.

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A small, often grasping, claw like feature in some grasses at the base of a leaf blade. Auricles are present in some grasses, for example in Perennial ryegrass and Couch grass.

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A very fine bristle which projects from some grass seeds, such as red fescue (Festuca rubra ssp), or very prominently such as on sweet vernal grass (Anthoxanthum oderatum).

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A bud (also called an embryonic shoot) that is located at a leaf node; this is where the leaf joins the stem (known as the leaf axil) and from where a new leaf can emerge.