Flora of North America Glossary
Displaying 2126-2150 of 2673
Term | Synonyms | Category | Limitation | Definition |
---|---|---|---|---|
sickle-shaped 1 | = falcate | plane shape | Elongate and laterally arcuate with the lateral edges more or less concentric, the degree of curvature decreasing distally or not; like the outline of the face of a sickle blade. | |
sickle-shaped 2 | = falcate | solid shape | Elongate, strongly compressed, and arcuate in the plane of compression, the two faces more or less plane and parallel, the degree of curvature decreasing distally or not; like a sickle blade. | |
sigmoid 1 | = S-shaped | course | Curved more or less regularly first in one direction and then in the opposite direction, like the letter S. | |
sigmoid 2 | = S-shaped | solid shape | 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. | |
siliceous | texture | epidermis, trichome | Containing deposits of silica, thus hardened and abrasive. | |
silicle | nominative | fruit | Like a silique, but only slightly longer than broad to broader than long; esp. in Brassicaceae (Cruciferae), Capparaceae. | |
silique | 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. | |
silky | = sericeous | pubescence | Of or bearing long, fine, appressed, capillate trichomes and like silk to the touch. | |
simple 1 | architecture | Externally unitary and comprising only one basic morphological unit; not compound in either sense of that term. | ||
simple 2 | architecture | trichome | Unicellular and unbranched. | |
simple-craspedodromous | venation | 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. | ||
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. |
single-… | = mono…, one-…, uni… | prefix | 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. | |
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. |
single-veined | = hyphodromous, one-veined | venation | Having one median, primary vein and no other venation externally evident. | |
sinistrorse | = leftward | orientation | Directed to the left, relative to the direction of growth along an explicit or implicit axis of reference. See also dextrorse (rightward). | |
sinuate | margin | Having regular, curved, smoothly connected, alternating concavities and convexities. See also repand. | ||
sinuous | course | Regularly wavy in one plane, curved alternately and more or less regularly to either side. | ||
sinus pl. sinus, sinuses | FEATURE | 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. | ||
six-… | = hexa… | prefix | 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. | |
size | CHARACTER | Nature as to absolute or comparative extent in any one dimension or in area or volume. | ||
slashed | = laciniate; < cut, incised, lacerate, torn | plane shape | 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). | |
slipper-shaped | = calceolate | solid shape | Relatively thin-walled with an essentially hollow interior that is open on one side at the broader end. | |
small-beaked | = rostellate | apex | Diminutively beaked (rostrate). | |
small-bristly | = setulose | pubescence | Finely setose (hispid). |
Displaying 2126-2150 of 2673