Glossary

Category: P

  • Prostelic

    When an axis consists of a single concentric bundle.  

  • Prop root

    Prop root

    Root growing out of the lower stem or branch and into the soil. Root growing from the lower stem or branches that curves down and roots in the soil, as in Rhizophoraceae, Pandanaceae and many Ficus (Moraceae).  

  • Prophyll

    (In Gramineae/Poaceae and Cyperaceae) the 2-keeled hyaline leaflet at the base of, and on the upper/adaxial side of, side branches; (In palms) the bract at the base of the inflorescence enveloping the inflorescence in bud; One or two of the first leaves of a lateral branch, different from the other leaves on that branch [old-fashioned…

  • Pro parte

    (Of a taxon name) partly (for example, used when discussing only part of a series of specimens cited for one taxon in a publication).  

  • Propagule

    Any vegetative or sexual structure (other than a seed) giving rise to a new plant, e.g. a broken off part that sprouts. The structure or component of a living being through which it is capable of dispersing or propagating itself.  

  • Propagation

    Multiplication by means of spores, seeds and cuttings or other vegetative means. An act of causing something to spread or multiply. Reproduction, the act of giving birth; regarding nerves, transmission of electrical impulses from one part to the other. In the heart, a wave of electrical stimulation propagates (passes) from top to bottom causing sequential…

  • Prone

    Lying flat, with the upper face downwards. Refers to the body lying in a face-down position. Referring to the arm with the palm facing downwards. Positioning of the body lying down, facing downward. Lying with the face downward; the orientation of the hand with the palm facing down.  

  • Prominulous

    Slightly prominent [obscure term].  

  • Prominent

    Jutting out beyond another part. Standing out, very visible.  

  • Proliferous

    Proliferous

    With adventitious buds on the leaves or on the flowers (rarely roots), such buds being capable of rooting and forming separate plants. Multiplying, as by formation of new tissue cells. Increasing in number; typically relating to the creation of new tissues or cells.