I may add, as an instance of this fact, and as a striking case of correlation, that in many pelargoniums the two upper petals in the central flower of the truss often lose their patches of darker colour; and when this occurs, the adherent nectary is quite aborted, the central flower thus becoming peloric or regular.
Egitate honen adibidetzat eta korrelazio-kasu nabarmentzat gehi dezaket pelargonium askotan taldeko erdiko lorearen goiko bi petaloek beren unada ilunagoak galtzen dituztela sarri; eta hau gertatzen denean, aldameneko nektarioa guztiz abortaturik dago, erdiko lorea peloriko edo erregular bilakatuz.