noun (plural ocreae /ˈäkrē-ē/ /ˈōkrē-ē/ or ocreas)Botany
A sheath around a stem formed by the cohesion of two or more stipules, characteristic of the dock family.
- In this family, the ochrea completely encircles the stem.
- The stipules take the form of a protective organ, the ochrea, which at first totally covers the shoot bud, and then remains behind as a dry collar.
Mid 19th century: from Latin, literally 'protective legging'.
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