Mindblown: a blog about philosophy.

  • Plantlet

    Small plant formed on the leaf of a ‘mother’ plant.  

  • Plano-convex

    Flat on one side, convex on the other. (Of cap) Convex with a flat disc, or central area.  

  • Plane

    Flat, level, even. (Of cap) Flat, or nearly so, not curved. A flat surface, especially that of the body seen from a specific angle. A level or smooth surface, especially any of the hypothetical flat surfaces, orientated in various directions, used to divide the body; for example, the coronal and sagittal planes.  

  • Plagiotropic

    (Of shoots) lateral branches, ± horizontal or at an angle from the vertical.  

  • Placentation

    Disposition of the placenta within the ovary. In botany, the arrangement of the placentas and ovules within the ovary. The process of formation and attachment of the placenta. How the placenta forms and attaches.  

  • Placenta

    The part of the ovary to which the ovules or seeds are attached, sometimes raised or thickened. That surface or part of an ovary to which the ovules are attached. The disk-shaped organ within the uterus through which the exchange of nutrient material and oxygen takes place along with the elimination of waste products from…

  • Pitted

    With small depressions. Covered with small cavities. Having small depressions upon the surface. Covered with small hollows.  

  • Pithy

    With spongy tissue.  

  • Pith

    Spongy tissue, usually at the centre of stem or branch. The tissue in the middle of a plant’s stem or branch. The central portion of exogenous stems. The center of a hair or the soft material in the stalk of a plant.  

  • Pitcher plant (Sarracenia purpurea)

    Carniverous plant, with a trapping mechanism of a deep hollow tube-like leaf partially filled with liquid, which eventually dissolves the trapped insects. Fascinating insect-eating plant. Colourful pitcher-like leaves with arching hoods and honey scent attract and trap small insects. North American Indians used an infusion of the rootstock for smallpox. Bog plant.  

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