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staminodial |
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position |
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Upon or otherwise directly associated with the staminodes. |
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staminodial |
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insertion |
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Upon or otherwise directly associated with the staminodes. |
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staminodium pl. staminodia |
= staminode |
STRUCTURE |
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Any sterile structure deemed to represent a modified stamen, homology being inferred on the basis of structural similarity, ontogeny, and/or position; sometimes petaloid, sometimes nectariferous, sometimes connate with others or adnate to other floral structures. |
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standard |
= banner, vexillum |
STRUCTURE |
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The relatively large, erect adaxial (upper) petal in a papilionaceous corolla. |
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star-shaped 1 |
= stellate |
plane shape |
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Having four or more intersecting radiate lobes or portions, each distally slender; like the stylized outline of a star. |
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star-shaped 2 |
= stellate |
solid shape |
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Having a distal aspect like the stylized shape of a star; stipitate or sessile with elongate branches or appendages radiating widely in three dimensions from a common point at the apex of the proximal axis or, when sessile, upon the bearing surface. |
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stellate 1 |
= radiant, radiate |
arrangement |
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Disposed about and mutually divergent from a common geometric center in two or three dimensions, thus collectively actinomorphic. |
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stellate 2 |
= star-shaped |
plane shape |
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Having four or more intersecting radiate lobes or portions, each distally slender; like the stylized outline of a star. |
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stellate 3 |
= star-shaped |
solid shape |
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Having a distal aspect like the stylized shape of a star; stipitate or sessile with elongate branches or appendages radiating widely in three dimensions from a common point at the apex of the proximal axis or, when sessile, upon the bearing surface. |
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stem |
> cane, culm |
STRUCTURE |
|
The entire axial system of a shoot, or a component, primary or higher-order (branch) axis of the shoot; differentiated anatomically and morphologically into nodes and internodes, from the former of which it branches exogenously and bears leaves, bracts, and/or inflorescences; usually growing above ground level, but sometimes structurally and functionally specialized and growing underground (e.g., rhizome, tuber) or upon the surface of the ground (e.g., stolon). Although sometimes phenotypically distinctive and often treated separately for descriptive purposes, the axial system of an inflorescence, excluding pedicels or parts of them in some cases, is properly stem in the above general sense. |
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stemless |
= acaulous |
architecture |
plant |
Lacking any evident, elongate, aboveground stem, other than reproductive axes, at maturity, the leaves and/or reproductive axes arising essentially at substrate level from a very short axis with highly congested nodes. |
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stemmed |
= caulescent |
architecture |
plant |
Having at maturity an evident, elongate, aboveground stem or stems from which branches, leaves, and/or reproductive axes arise at one or more levels along its length. |
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stephanocolpate |
|
architecture |
pollen grain |
Having more than three surficial grooves (colpi) oriented meridionally. |
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stephanocolporate |
|
architecture |
pollen grain |
Stephanocolpate, each groove containing a pore. |
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stephanoporate |
|
architecture |
pollen grain |
Having more than three pores disposed equatorially. |
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sterigma pl. sterigmata |
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STRUCTURE |
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A portion of a lamina that is prolonged and adherent to the supporting axis beneath the point of vascular insertion. |
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sterile |
|
reproduction |
plant, reproductive structure |
Not producing functional spores, gametes, pollen, ovules, seeds, or other propagules. |
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sterile frond |
= trophophyll |
STRUCTURE |
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A frond that does not bear sporangia; in Polypodiophyta. See also fertile frond. |
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…stichous |
= …ranked |
arrangement |
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Disposed along the axis in the number of distinct ranks indicated by the prefix; as in distichous, polystichous, tristichous. |
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stiff |
= rigent, rigid |
texture |
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Strongly resisting deformation over its length. |
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stigma pl. stigmata, stigmas |
|
STRUCTURE |
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An exposed, localized portion of a pistil that retains deposited pollen and stimulates its germination, the pollen tubes then growing through or along it toward the ovule(s). |
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stigmatic |
|
habit |
trichome |
Borne on the surface of the stigma and serving to hold pollen deposited there, variously shaped, often glandular, sometimes contractile. |
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stilt root |
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STRUCTURE |
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A relatively stout or strong adventitious root arising from a woody stem branch and extending downward directly toward the substrate, within which it ultimately becomes anchored, thus supporting the branch of origin; as in some Ficus (Moraceae). |
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stilt-rooted |
|
architecture |
plant |
Bearing and partly supported by stilt roots. |
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stinging |
= urent |
habit |
trichome |
Setaceous or capillate and ejecting an irritating fluid when the apex is dislocated by external pressure, the ejection accomplished by release of existing internal fluid pressure or by contraction of the whole trichome. |
