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Petiole vs Pinnule - What's the difference?

petiole | pinnule |

In botany terms the difference between petiole and pinnule

is that petiole is the stalk of a leaf, attaching the blade to the stem while pinnule is any of the ultimate leaflets of a bipinnate or tripinnate leaf; a subleaflet.

petiole

English

(wikipedia petiole)

Noun

(en noun)
  • (botany) The stalk of a leaf, attaching the blade to the stem.
  • (entomology) A narrow or constricted segment of the body of an insect. Used especially to refer to the metasomal segment of Hymenoptera such as wasps.
  • (entomology) The stalk at the base of the nest of the paper wasp.

    • Synonyms

    * (segment of the body of an insect) pedicel

    Derived terms

    * petiolar * petiolary

    pinnule

    English

    Noun

    (en noun)
  • (botany) Any of the ultimate leaflets of a bipinnate or tripinnate leaf; a subleaflet.