What is having the radicle of the embryo sheathed by the cotyledon, through which the embryo bursts in germination, as in many monocotyledonous plants called?

endorhizal — Having the radicle of the embryo sheathed by the cotyledon, through which the embryo bursts in germination, as in many monocotyledonous plants. (Webster's 1913.)

Sources