HERBACEOUS STEMS

'Herbaceous stems' are plant structures that have been modified to serve the same function as leaves and occur in a number of different plant groups including Cactus and Euphorbiaceae. In this context herbaceous is a descriptive term for the morphological appearance of parts of a plant, typically used when structures look and act like leaves with leaf-like texture and color¹. Many Cactus have modified stems that are flattened and green, the true leaves have been reduced to spines. 'Soft and green with little woody tissue'.

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¹ISBN 1-85326-374-5 The Wordsworth dictionary of botany by George Usher