Category: S
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Shrub
Self-supporting woody plant branching at or near the ground or with several stems from the base; [Less correctly] used for plants with a single stem but then ‘quite short’ (<2 m) or plants with a single stem but with side-branches starting close to the base. (A difficult term — Lawrence says “a descriptive term not…
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Short-shoot
Condensed shoot with short (and sometimes few) internodes bearing leaves (and/or flowers and fruits) in seeming clusters, usually on the main axis or on a long (i.e. extension) shoot.
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Shoot
An elongating stem, usually near the apex of the plant and sometimes used for the main axis; (In sympodial orchids) a continuation of the rhizome. A new growth, such as a sprout or twig. To seem to move suddenly through the body with a piercing feeling. Any aerial part of a plant that bears leaves,…
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Shield
(In gymnosperm cones) the outermost part of a cone scale, the part that remains exposed when the cone is closed. A cover or barrier; any layer or structure that limits exposure to a potentially toxic agent, such as a source of body fluids or radiation.
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Sheathing
Enveloping and enclosing; With a sheath. Wrapped around a stem.
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Sheath
A tubular organ enveloping another organ; (in grasses or palms) the tubular part of the leaf enveloping the stem. The basal portion of a leaf that surrounds the stem. A tubular envelope extending downward from the base of a leaf blade or leaf stalk and covering the plant stem. A characteristic of all grasses and…
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Shale
A fine-grained sedimentary rock, stratified and easily splitting into thin layers.
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Shagreened
(Of a surface) with minute nodules, like sharkskin.
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Shaggy
With long rough and coarse hairs.
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Shade leaves
Those leaves adapted to low light.