noun. A fleshy clublike spike bearing minute flowers, usually enclosed within a sheathlike spathe, characteristic of aroid plants such as the jack-in-the-pulpit.

noun. In botany, a form of inflorescence in plants, in which the flowers are closely arranged in a spike or head which has a fleshy or thickened rachis.

noun. In zoology:

noun. The hectocotylus of the male cephalopod: a specialized part of the fore foot, on one side, which becomes hectocotylized, or assumes a sexual function. On the opposite side is a corresponding part, not subject to hectocotylization, called the antispadix.

noun. In Hydrozoa, the manubrium of the hydromedusans, an offset of a blastostyle bearing the genital products, like the part of a pea-pod which bears the peas.

noun. A genus of cœlenterates.

noun. A fleshy spike of flowers, usually inclosed in a leaf called a spathe.

noun. A special organ of the nautilus, due to a modification of the posterior tentacles.

noun. A fleshy spike (inflorescence) with reduced flowers, usually enclosed by a spathe.

noun. A special organ of the nautilus, due to a modification of the posterior tentacles.

noun. the fleshy axis of a spike often surrounded by a spathe