Editing Stipule (section)

== General characteristics ==
The position of stipules on a plant varies widely from species to species, though they are often located near the base of a leaf. Stipules are most common on dicotyledons, where they appear in pairs alongside each leaf. Some monocotyledon plants display stipule-like structures, but only display one per leaf. A relationship exists between the anatomy of the stem node and the presence or absence of stipules: most plants with ''trilacunar'' [[Node (botany)|nodes]] have stipules; species with ''unilacunar'' nodes lack stipules.<ref>{{cite journal|author=Sinnott, E. W.|author2=I. W. Bailey|name-list-style=amp|jstor=2435043|year=1914|title=Investigations on the phylogeny of the angiosperms. 3. Nodal anatomy and the morphology of stipules|journal=American Journal of Botany|volume=1|issue=9|pages=441–453|doi=10.2307/2435043|url=https://www.biodiversitylibrary.org/part/312592 }}</ref>

Stipules are morphologically variable and might appear as [[gland (botany)|gland]]s, scales, [[Trichome|hairs]], [[Spine (botany)|spines]], or laminar (leaf-like) structures.

If a single stipule goes all the way around the stem, it is known as an [[ochrea]].<ref name=":0">{{Cite book|url=https://books.google.com/books?id=SM3khPHXhKEC&q=stipule&pg=PA76|title=Plant Form: An Illustrated Guide to Flowering Plant Morphology|last=Bell|first=Adrian D.|date=2008-01-01|publisher=Timber Press|isbn=9780881928501|pages=74–79|language=en|access-date=2020-10-20|archive-date=2023-04-14|archive-url=https://web.archive.org/web/20230414083947/https://books.google.com/books?id=SM3khPHXhKEC&q=stipule&pg=PA76|url-status=live}}</ref>