Flora of North America Glossary

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Term Synonyms Category Limitation Definition
ventricose = bellied solid shape Bulging unilaterally near the middle, as though with a belly.
ventrifixed fixation Attached on the adaxial side well above the base.
vermiculate = worm-shaped solid shape Basically cylindric, elongate, and slender with bluntly rounded ends, variously curved over its length.
vernation CHARACTER Disposition of leaves in the bud.
verrucose = tuberculate, tuberculose, warty relief Covered with small, relatively broad, irregularly shaped, obtuse protrusions.
versatile fixation Attached in a manner allowing free rotation and declination.
verticil = cycle, series, whorl STRUCTURE A set of three or more lateral structures that are inserted around an axis at the same level.
…verticillate = …cyclic, …seriate, …whorled arrangement Disposed in the number of verticils (cycles, series, whorls) indicated by the prefix; as in five-whorled, 3-whorled.
verticillate = cyclic, seriate, whorled arrangement Disposed along the axis in groups of three or more, the members of each group (cycle, series, verticil, whorl) inserted regularly around the axis at the same level.
vesicle STRUCTURE A small bladder-like part consisting of an enclosing wall or covering and an empty or fluid-filled interior, sometimes turgid; esp. in citrus fruits (hesperidia).
vesiculate = alate, saccate, winged architecture pollen grain Having lateral lobes or enations resembling sacs or somewhat inflated wings.
vespertine = evening-blooming habit flower Opening during the evening.
vestigial < obsolete (not recommended), rudimentary manifestation Not developing fully and not functional compared with corresponding structures in other taxa, and thought to have devolved to that state from a fully developed and functional structure in an ancestral taxon.
vestiture STRUCTURE / SUBSTANCE See vesture.
vesture var. vestiture = indumentum STRUCTURE / SUBSTANCE The trichomes and/or exuded substance that overlie a surface proper, regarded collectively. See also coating, pubescence.
vexillate aestivation Having a larger member oriented more or less perpendicular to and folded about the others.
vexillum pl. vexilla = banner, standard STRUCTURE The relatively large, erect adaxial (upper) petal in a papilionaceous corolla.
V-form arrangement bundle scars Disposed in an open-ended triangular pattern, like the letter V.
villose = shaggy, villous pubescence Bearing sparse, long, slender, soft, capillate trichomes that are not intertwined. See also villosulous.
villosulous pubescence Finely villose (shaggy, villous).
villous = shaggy, villose pubescence Bearing sparse, long, slender, soft, capillate trichomes that are not intertwined. See also villosulous.
vine > liana nominative plant Perennial, with elongate, herbaceous or ligneous stems that are flexible at least initially and that clamber, climb or trail.
viny > lianous habit plant Having elongate, herbaceous or ligneous stems that are flexible at least initially and that clamber, climb or trail.
virgate = wand-like architecture axis Long, slender, unbranched, and more or less straight.
viscid 1 < glutinous coating Of a sticky substance.
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