Umbellularia
(n.) A genus of deep-sea alcyonaria consisting of a cluster of large flowerlike polyps situated at the summit of a long, slender stem which stands upright in the mud, supported by a bulbous base.
Similar Words:
Bumbelo Bumbeloes Columbella Umbel Umbellar Umbellate Umbellated Umbellet Umbellic Umbellifer