Carcerulus ( pl . carceruli ) a type of capsular fruit that breaks up at maturity into one - seeded segments or nutlets . the carcerulus is typical of the lamiaceae family , e . g . deadnettle ( lamium ) 小坚果群：一类有蒴的果实，成熟后分裂形成包含一个种子的小坚果。是薄荷类（唇形科）植物的典型特征。
