Flora of North America Glossary

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Term Synonyms Category Limitation Definition
viscid 2 < glutinous texture Sticky.
viscidium pl. viscidia STRUCTURE A small, viscid, glandular body of rostellar origin that becomes connected with a pollinium caudicle, either directly or through an intervening stipe, by which the pollinium attaches to a pollinating insect; in Orchidaceae.
viscin = elastoviscin SUBSTANCE A sticky, elastic material, especially that forming the threads that sometimes connect pollen grains.
viviparous reproduction Producing sexually or asexually generated offspring that begin growth and development while borne upon the parent plant.
voluble = twining habit axis Coiling about other plants or objects during growth, thus achieving support.
waisted solid shape Constricted in width or breadth at or near the middle of its length.
wall (fruit, ovary, pollen, spore) STRUCTURE The exterior layer of tissue(s) enclosing anatomically distinct interior tissues and sometimes fluid and/or one or more cavities.
wand-like = virgate architecture axis Long, slender, unbranched, and more or less straight.
warty = tuberculate, tuberculose, verrucose relief Covered with small, relatively broad, irregularly shaped, obtuse protrusions.
watery texture Liquid and weakly cohesive, flowing freely; like water. This term often implies also transparency.
wavy = undulate margin Having regular, curved, smoothly connected, alternating, wave-like deviations upward and downward from the general plane of the structure.
waxen 1 = ceraceous, cereous, waxen; > caesious, glaucescent, glaucous, pruinose coating Covered with wax or a wax-like substance.
waxen 2 = ceraceous, cereous, waxy texture Having the consistency of wax.
waxy 1 = ceraceous, cereous, waxen; > caesious, glaucescent, glaucous, pruinose coating Covered with wax or a wax-like substance.
waxy 2 = ceraceous, cereous, waxy texture Having the consistency of wax.
weak texture Very pliable and unresilient.
wedge-shaped 1 = cuneate, obtriangular base laminar structure Attenuate with the sides more or less straight and intersecting at an acute angle.
wedge-shaped 2 = cuneate, obtriangular plane shape Inversely triangular; like the outline of the broad lateral face of a wedge, broadest at the apex. See also obdeltate.
weeping architecture plant Having elongate, flexible, pendent branches.
wheel-shaped = rotate solid shape perianth, calyx, corolla Having a very short, cupulate tube and a broad, divergent to divaricate limb; resembling a wheel when viewed from the distal end.
whip-like = flagelliform solid shape Very slender, terete, generally straight, and apparently supple.
whorl = cycle, series, verticil STRUCTURE A set of three or more lateral structures that are inserted around an axis at the same level.
…whorled = …cyclic, …seriate, …verticillate arrangement Disposed in the number of whorls (cycles, series, verticils) indicated by the prefix; as in three-whorled, 1-whorled.
whorled = cyclic, seriate, verticillate arrangement Disposed along the axis in groups of three or more, the members of each group (cycle, series, verticil, whorl) inserted around the axis at the same level.
wind-pollinated = anemophilous reproduction plant, strobilus, flower Having the pollen normally transported between strobili or flowers by air currents.
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