plant part - any part of a plant or fungusstub - a short piece remaining on a trunk or stem where a branch is lost button - any of various plant parts that resemble buttons thallus - a plant body without true stems or roots or leaves or vascular system; characteristic of the thallophytes pileus, cap - a fruiting structure resembling an umbrella that forms the top of a stalked fleshy fungus such as a mushroom calyptra - the hood or cap covering the calyx of certain plants: e.g., the California poppy volva - cuplike structure around the base of the stalk of certain fungi domatium - a part of a plant (e.g., a leaf) that has been modified to provide protection for insects or mites or fungi pycnidium - flask-shaped asexual structure containing conidia stipule - a small leafy outgrowth at the base of a leaf or its stalk; usually occurring in pairs and soon shed tepal - an undifferentiated part of a perianth that cannot be distinguished as a sepal or a petal (as in lillies and tulips) gynostegium - the crown of the stamen in plants of the genus Asclepias chalaza - basal part of a plant ovule opposite the micropyle; where integument and nucellus are joined nucellus - central part of a plant ovule; contains the embryo sac pollen tube - slender tubular outgrown from a pollen grain that penetrates the ovule and releases male gametes mentum - a projection like a chin formed by the sepals and base of the column in some orchids corona - (botany) the trumpet shaped or cup shaped outgrowth of the corolla of a daffodil or narcissus flower mycelium - the vegetative part of a fungus consisting of a mass of branching threadlike hyphae plant organ - a functional and structural unit of a plant or fungus aril - fleshy and usually brightly colored cover of some seeds that develops from the ovule stalk and partially or entirely envelopes the seed duct - a continuous tube formed by a row of elongated cells lacking intervening end walls universal veil, velum - membrane initially completely investing the young sporophore of various mushrooms that is ruptured by growth; represented in the mature mushroom by a volva around lower part of stem and scales on upper surface of the cap partial veil, velum - 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 annulus - (Fungi) remnant of the partial veil that in mature mushrooms surrounds the lower part of the stem tendril - slender stemlike structure by which some twining plants attach themselves to an object for support stump, tree stump - the base part of a tree that remains standing after the tree has been felled prophyll - a plant structure resembling a leaf stock - a plant or stem onto which a graft is made; especially a plant grown specifically to provide the root part of grafted plants receptacle - enlarged tip of a stem that bears the floral parts kernel, meat - the inner and usually edible part of a seed or grain or nut or fruit stone; "black walnut kernels are difficult to get out of the shell" lobe - (botany) a part into which a leaf is divided ligule - (botany) any appendage to a plant that is shaped like a strap |