Culm | plant anatomy | Britannica (original) (raw)

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bamboo

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  In bamboo
  …woody ringed stems, known as culms, are typically hollow between the rings (nodes) and grow in branching clusters from a thick rhizome (underground stem). Bamboo culms can attain heights ranging from 10 to 15 cm (about 4 to 6 inches) in the smallest species to more than 40 metres (about…
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Poaceae

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  In Poaceae: Characteristic morphological features
  Grass stems, sometimes called culms, are herbaceous or woody, and they range from about 2 centimetres (0.79 inch) in some grasses of severe climates (Aciachne pulvinata) to 40 metres (131 feet) in height and 30 centimetres in diameter in bamboos (species of Dendrocalamus).
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