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sigmoid 1 |
= S-shaped |
course |
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Curved more or less regularly first in one direction and then in the opposite direction, like the letter S. |
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sigmoid 2 |
= S-shaped |
solid shape |
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Elongate with more or less constant width or diameter and curved more or less regularly first in one direction and then in the opposite direction, like the letter S. |
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siliceous |
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texture |
epidermis, trichome |
Containing deposits of silica, thus hardened and abrasive. |
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silicle |
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nominative |
fruit |
Like a silique, but only slightly longer than broad to broader than long; esp. in Brassicaceae (Cruciferae), Capparaceae. |
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silique |
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nominative |
fruit |
Dry, septifragal, two-loculed and derived from a single, superior, compound ovary; much longer than broad; dehiscing along two sutures, one adaxial, one abaxial, leaving a single persistent septum (replum) after the two valves of the pericarp have fallen away; esp. in Brassicaceae (Cruciferae), Capparaceae. See also silicle. |
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silky |
= sericeous |
pubescence |
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Of or bearing long, fine, appressed, capillate trichomes and like silk to the touch. |
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simple 1 |
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architecture |
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Externally unitary and comprising only one basic morphological unit; not compound in either sense of that term. |
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simple 2 |
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architecture |
trichome |
Unicellular and unbranched. |
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simple-craspedodromous |
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venation |
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Having a midvein that branches to either side along the length of the lamina, the secondary veins and their branches all running toward and terminating at the margin. |
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simple-lipped |
= haplocheilic |
architecture |
stomate |
Having subsidiary cells not derived from the primary stoma mother cell and thus not immediately related ontogenetically to the guard cells. |
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single-… |
= mono…, one-…, uni… |
prefix |
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Indicating presence of or constitution by one entity of the type denoted by the term's stem; as in single-celled, single-headed, single-seeded. See also entries for particular terms with this prefix whose meanings, at least in some applications, are more specific than usually indicated by such combination. |
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single-leafleted |
= one-leafleted, unifoliolate |
architecture |
foliaceous structure |
Structurally compound but with only one leaflet, whose nature (as a leaflet, not a leaf) is revealed by an evident articulation with the petiole, this condition presumably derived by evolutionary reduction from a multifoliolate precursor. |
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single-veined |
= hyphodromous, one-veined |
venation |
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Having one median, primary vein and no other venation externally evident. |
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sinistrorse |
= leftward |
orientation |
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Directed to the left, relative to the direction of growth along an explicit or implicit axis of reference. See also dextrorse (rightward). |
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sinuate |
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margin |
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Having regular, curved, smoothly connected, alternating concavities and convexities. See also repand. |
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sinuous |
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course |
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Regularly wavy in one plane, curved alternately and more or less regularly to either side. |
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sinus pl. sinus, sinuses |
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FEATURE |
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The space, indentation, or invagination (or, for some descriptive purposes, the outline thereof) between and delimiting any two consecutive or adjacent lobes or teeth of a structure. |
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six-… |
= hexa… |
prefix |
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Indicating presence of or constitution by six entities of the type denoted by the term's stem; as in six-angled, six-sepaled, six-styled. |
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size |
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CHARACTER |
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Nature as to absolute or comparative extent in any one dimension or in area or volume. |
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slashed |
= laciniate; < cut, incised, lacerate, torn |
plane shape |
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Having relatively close, more or less straight lines of separation exending inward from the margin. See also cleft (dissected, divided, lobate, lobed, parted, partite, segmented). |
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slipper-shaped |
= calceolate |
solid shape |
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Relatively thin-walled with an essentially hollow interior that is open on one side at the broader end. |
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small-beaked |
= rostellate |
apex |
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Diminutively beaked (rostrate). |
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small-bristly |
= setulose |
pubescence |
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Finely setose (hispid). |
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small-dotted |
= puncticulate |
coloration |
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Finely dotted (punctate). |
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small-dotted |
= puncticulate |
relief |
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Finely dotted (punctate). |