Note: Do not rely on this information. It is very old.
Regma
Regma, a term, of Greek derivation, implying splitting, occasionally employed by botanists for the superior schizocarpic fruits of such plants as the Mallow, Geranium, Tropnsolum, Euphorbiacese, and Labiatse, in which the dry syncarpous fruit breaks, when ripe, so as not to disclose its seeds, either into its constituent carpels or into half-carpels. These segments are called cocci, nutlets. or mericarps, and there may be a carpophore between them or not. The regma differs from the cremocarp, such as the fruit of Umbellifera, in being superior.