Stigma (botany) Stigma (botany) The stigma (plural: stigmata) is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. The stigma, together with the style and ovary comprises the pistil, which in turn is part of the gynoecium or female reproductive organ of a plant. The stigma forms the distal portion of the style or stylodia. The stigma is composed of , the cells which are receptive to pollen. These may be restricted to the apex of the style or, especially in wind pollinated species, cover a wide surface. The stigma receives pollen and it
Calyx podatypa Calyx podatypa Calyx podatypa is a species of demosponge belonging to the Phloeodictyidae family. It is native to the Caribbean. The species was first described in 1934 by American spongiologist Max Walker de Laubenfels. It is commonly found in shallow reefs, among seagrass and on mangrove roots. It is described as being mostly hollow with growths that range from branched to lobate in shape and tubular projections. It has round openings between 1-5mm in size. The colour is "Brown-yellowish to greenish" on the outside and tan on the inside. A number of biologically active compounds have been isolated from "Calyx