nounBotany & Zoology
A cup-shaped organ, structure, or receptacle in a plant or animal.
- The ovule is surrounded by integument tissues which produce the seed coat, and in the earliest seed plants another layer called the cupule enclosed the entire ovule/seed.
- Thus, the cupule is a simple uniaxial structure.
- Lyginopterids bore cupules, which can be described as tulip shaped structures.
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