What is (a) A little sheath, as that about the base of the pedicel of most mosses. (b) One of the tubular florets in composite flowers. Henslow called?

vaginula — (a) A little sheath, as that about the base of the pedicel of most mosses. (b) One of the tubular florets in composite flowers. Henslow. (Webster's 1913.)

Sources