Category: T

  • Trichome

    Hair, bristle, prickle or scale; an epidermal outgrowth of diverse form, structure and function but without vascular tissue. A bristle or hair. An outgrowth of the epidermis, which can have various forms, but has no vascular tissue; a hair, bristle, prickle or scale. Crystal-like resin gland on cannabis leaves, stems, and calyxes where most cannabinoids…

  • Tricarinate

    With three keels.  

  • Tribe

    Taxon ranking above genus and below family. In taxonomy, an occasional subdivision of a family; often equal to or below subfamily and above genus.  

  • Triaperturate

    (Of pollen) with three openings.  

  • Triandrous

    With three stamens.  

  • Triad

    (In Gramineae/Poaceae) used for groups of three spikelets in Zonotriche; (In palms) a group of three florets, the central female, the flanking ones male; (In Amaranthaceae) a cluster of three flowers, a fertile one flanked by two sterile ones. Three organs or three symptoms which are linked together in a group. Set of three similar…

  • Tree layer

    Upper layer of vegetation in forest or woodland.  

  • Tree

    Tree

    Perennial woody plant with secondary thickening, with a clear main trunk. (The distinction between tree and shrub is fluid, but generally accepted to be dependent on the single trunk, and on height, a tree being at least 2–3 m tall). Woody, usually tall, perennial higher plants (Angiosperms, Gymnosperms, and some Pterophyta) having usually a main…

  • Trapeziform

    (Of a plane shape) with four sides, two of which are parallel.  

  • Transversely

    Lying crosswise, at right angles.