antennatus,-a,-um from L. antenna, literally the yard of a sailing ship; hence feeler, a sensory appendage on the head of an insect, antenna: bearing antennae or someting resembling an antenna
 
278312 325987 Dendrobium antennatum Lindl. G. Bentham, Bot. Voy. Sulphur: t. 59 (1844) [S.A. Drake]