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The banana plant's 'true' stem

Caption:
Banana plants stripped of their pseudostem to reveal the 'true' stem: the underground rhizome, the aerial stem that supports the leaves whose sheaths form the pseudostem (the leaves' insertion points along the aerial stem are visible on the photo), and the peduncle which supports the inflorescence that produces the fruits. The aerial stem starts on the rhizome's apical meristem and carries upwards the leaf bases and flowers through the pseudostem, hence its white colour. The stem turns green when it emerges at the top of the plant and is then called peduncle. The stem ends in the male bud, which is missing on the photo.
Keywords:
Morphology
Date shot:
May 2008
Country:
Rwanda
Photographer:
Blomme, Guy / Bioversity International