| Water arum | (Bot.) An aroid herb (Calla palustris) having a white spathe. It is an inhabitant of the north temperate zone. [ 1913 Webster ] |
| wild calla | (n) plant of wetlands and bogs of temperate regions having small greenish flowers partly enclosed in a white spathe and red berries, Syn. Calla palustris, water arum |
| Water arum | (Bot.) An aroid herb (Calla palustris) having a white spathe. It is an inhabitant of the north temperate zone. [ 1913 Webster ] |