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plural paleae or pales
(botany) The interior chaff or husk of grasses. examples
(botany) One of the chaffy scales or bractlets growing on the receptacle of many compound flowers, such as the sunflower. quotations examples
In a single Brazilian species, doubtfully referred to Brickellia, a few pales occur toward the edge of the disk.
1917, Benjamin Lincoln Robinson, A Monograph of the Genus Brickellia