Definition of scale leaf in English:

scale leaf

noun

Botany
  • A small modified leaf, especially a colourless membranous one, such as on a rhizome or forming part of a bulb.

    • ‘Each GU can be identified by the existence of morphological markers in the form of scale leaf and assimilating leaf scars alternately distributed along the aerial axes.’
    • ‘For example, a scale leaf that is able to support greater rates of water loss may have a higher total productivity than a much larger leaf that requires high surface resistances.’
    • ‘Later, when trees reach the adult stage, leaf primordia differentiate into scale leaves, and photosynthetic activity is shifted to long needles differentiated on short shoots.’
    • ‘On reaching the top of a tree, the growing point descends, progressively changing its morphology and leaf structure, and eventually assuming a very thin filiform shape with only scale leaves on the soil.’
    • ‘The scale leaves are under the tunic and hold all the nutrients needed to grow the cultivar.’