perichætium

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• Perichaeth — Per i*ch[ae]th, n. [See {Perich[ae]tium}.] (Bot.) The leafy involucre surrounding the fruit stalk of mosses; perich[ae]tium; perichete. [1913 Webster] …   The Collaborative International Dictionary of English

• Perichaetous — Per i*ch[ae] tous, a. [See {Perich[ae]tium}.] (Zo[ o]l.) Surrounded by set[ae]; said of certain earthworms (genus {Perich[ae]tus}). [1913 Webster] …   The Collaborative International Dictionary of English