Collier's New Encyclopedia (1921)/Follicle

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FOLLICLE, a form of fruit placed by Lindley in his class Apocarpi. It differs from the legume in having but one valve instead of two. A flower of Nigella, or one of Delphinium, produces several such follicles. In anatomy, a follicle is a minute secreting bag, which commonly opens upon a mucous membrane; a simple gland. It is called also a crypt or lacuna.