helwingia

from The Century Dictionary.

• noun A genus of dicotyledonous polypetalous plants, founded by Willdenow in 1805, of the natural order Araliaceæ, series Panaceæ, remarkable in having the small sessile and few-flowered umbelets borne on the midribs of the leaves near the center.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun deciduous dioecious shrubs native to woodland thickets in low mountains in Japan