stipe

noun

(L. stipes: post, trunk) A stalk supporting a structure, as the stalk attaching the ovary to the receptacle in some flowers; the stalk-like support of a pistil; the stalk-like basal part of an ovary, or of a fruit such as an achene; the stem bearing pileus in mushrooms and toadstools; in ferns, the petiole of a frond; in algae, the cylindrical basal portion of a thallus; the unbranched basal part of an erect stem in a dendroid or frondose moss (Pterobryaceae) and some anacrogynous liverworts (Symphyogyna).