stipe

noun5

1. •
   The stem of a mushroom, kelp, etc.

   • Habitually, the phosphorescence is distributed in an unequal manner upon the stipe, and the same upon the gills. — 1880
2. •
   The trunk of a tree.
3. •
   The caudicle within the pollinarium of an orchid flower
4. •
   The petiole of the frond of a fern or palm

   • The stipes or bare portion of the frond is, as a rule, about the same length as the leafy portion. — 1917
5. •
   (slang, historical) A stipendiary magistrate.