NCBG North Carolina Botanical Garden

One Ring to rule them all, One Ring to find them, One Ring to bring them all and in the darkness bind them. - J.R.R. Tolkien

Botanical Glossary

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termdefinitionimage
TrullateWith widest axis below middle and with straight margins; ovate but margins straight and angled below...
TruncateWith the apex cut more or less straight across; ending abruptly, almost at right angles to the midri...g-truncate.png
TrunkThe aboveground, relatively stout, main stem of a tree; the bole.
TrymaTwo-four loculed nut surrounded by a dehiscent involucre at maturity, as in most species of Caryag-tryma.png
TubeCylindrical partg-tube.png
TuberA solid, enlarged, horizontal, shortened stem, usually borne below ground and containing food reserv...g-tuber.png
TuberculateWith hard, swollen, persistent base or tubercle. Tuberculate or Verrucose - With a warty surfaceg-tuberculate-style.png
TuberculesSilica deposits on the stem ridges, as in Equisetum
TuberousFleshy roots resembling stem tubers
TubularCylindricalg-tubular.png
TurbinateTop-shaped; obconicg-turbinate.png
TurgidTumid or swolleng-turgid.png
TurionAn over-wintering bud, as in Lemna
TwigThe relatively small end portion of a woody branchlet; a small branchlet. (Compare with branchlet.)
TwiningTwisted around a central axis
Two-angledMore or less flat in cross section, with an upper and lower surface.
TypicalStamen with distinct anther and filament with or without thecal appendages, as in Rhexia or Vacciniu...
UmbelAn inflorescence in which individual flower stalks arise from a single point and are approximately o...g-umbel1.png
UmbelletThe secondary umbel in a compound umbelg-umbellet.png
UmbilicateDepressed in the center
UmboProjection, with or without spine or prickle, on the apophysis of the cone scale
UmbonateRound with a projection in centerg-umbonate.png
UmbraculateUmbrella-shaped, as in Sarraceniag-umbraculate-style.png
UmbraculiformUmbrella-shaped
UnarmedWithout a hook, prickle or other sharply pointed structure on the end of the cone scale.
Uncinateg-uncinate.png
UnctuousSlick, oily, slippery to touch
Underground StolonA determinate, elongate, underground propagative stem with long internodes forming a bulb or tuber a...g-underground-stolon.png
UnderstoryTrees, shrubs and other plants located beneath and in the shade of larger trees.
UndulateWith the margin undulating or wavy in a vertical plane. (Compare with sinuate.)g-undulate.png
UnguiculateClawedg-unguiculate.png
UnicarpellousWith solitary, free carpel in gynoeciumg-unicarpellous.png
UnifoliolateA structurally compound leaf with a single leaflet, making it appear simple, the compound nature of ...g-unifoliolate.png
UnilateralFlowers or other structures on one side of axis
UnilocularWith a single interior compartment or locule. (Compare with multilocular.)
Uninodal ShootSpring shoot developing from the terminal winter bud and producing only one internode with one whorl...
UniseriateOne-rowed; in one series
UnisexualHaving functional reproductive structures of only one sex in the flower or cone. (Compare with bisex...
UnknownRelevant to taxon at hand but status not known; information unavailable.
UnlobedWith no recesses or indentations in the margin, or with indentations extending less than 1/8 the dis...
UPLUpland.
UrceolateUrn-shapedg-urceolate.png
UrentWith erect, usually long trichomes that produce irritation when touched.g-urent.png
UtricleA more or less small, dry fruit that does not split open at maturity (indehiscent), with a thin blad...g-utricle.png
Vallecular CanalA canal beneath a stem groove
ValvateWith scales (usually two) meeting by the edges without overlapping. (Compare with imbricate.)g-valvate.png
ValvularDehiscing through a pore covered by a flap of tissue. Valvular or Septifragal Capsule - One with val...g-valvular.png
Variably serotinousHaving some cones that open when the seeds ripen and others that remain closed long after the seeds ...
VariegatedThe color disposed in various irregular, sinuous, spaces.
Vascular bundleA strand of conducting tissues and associated cells within a stem or connected structure.
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