Pyrena
This article is about a subject of plant anatomy. For other uses of Pyrena or Pyrene, see Pyrene (disambiguation).
Not to be confused with pyrenoid, an organelle within the chloroplast of some algae and hornworts, or with Pirene
![](../I/m/Crataeguspunctata.jpg)
Pyrenes extracted from a single fruit of Crataegus punctata
![](../I/m/Prunus_persica_pit.jpg)
A pyrene dissected to reveal the seed
Pyrena or pyrene is the name for the stone within a drupe or drupelet. It consists of a seed surrounded by hard endocarp tissue.[1][2]
References
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