Category: S
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Stinging hair
A tubular hair filled with liquid which, upon breaking, ejects the irritant liquid (e.g. in Urtica and Laportea).
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Stilt roots
Lateral roots from the lower (proximal) part of the stem that reach the ground and support the plant (e.g. in Rhizophora).
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Stigmatose
Provided with stigmas; With conspicuous stigmas. That portion of a style resembling a stigma in being capable of receiving the pollen.
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Stigmatic surface
That part of the style/pistil receptive to pollen.
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Stigmatic knob
Knob-shaped stigma; Stylehead on which a stigma sits.
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Stigmatic
Relating to the stigma.
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Sterigma
The small woody protuberance on conifer branches on which one or more needle leaves are inserted [unusual term]. Tapered extension of the basidium that produces the basidiospores; when broken, leaves a small portion on the basidiospore, the apiculus or hilar appendix.
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Stereome
(In Compositae/Asteraceae) a central sclerified part of the phyllary that may be entire or divided in two.
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Stenopetalous
With narrow petals [unusual term, not recommended].
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Stem succulent
A plant with a thickened fleshy stem that is used to store water.