HOYA CORIACEA. Thick leaved Hoya. […] Those of our readers unacquainted with the genus will, perhaps, understand us better by saying, that this is a kind of honey plant, familiar to most persons, with its waxy white flowers, and often grown in windows. The Hoya coriacea appears to be a thicker foliaged plant, stronger in its stem, and perhaps less inclined to become a twiner or creeper than the common honey plant.