1. Membrane of the young sporophore of various mushrooms extending from the margin of the cap to the stem and is ruptured by growth; represented in mature mushroom by an annulus around the stem and sometimes a cortina on the margin of the cap
   "The partial veil of the button mushroom forms a ring on the stem as it matures"

Derived forms: partial veils

Type of: veil, velum

Encyclopedia: Partial veil