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 stigmatic papillae, 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 is on the stigma that the pollen grain germinates.
Ambergris has been prized for centuries for its peculiar qualities. It has been used in the perfume industry as a fixative for fine perfumes, for medicinal purposes and as an aphrodisiac. Some people swear by the sensual effects created by rubbing a piece of ambergris on the skin.mbergris is an excretion from the Sperm Whale. It is found floating on the oceans or collected from the shores of many countries around the world.
The reason for the high prize lies in the origin of ambergris. It is a product of the sperm whale, as only sperm whales make the compound responsible for ambergris' allure: ambrein. Different organisms biosynthesise different compounds, such as caffeine made by cocoa, coffee or tea plants. Ambrein is made by sperm whales only to glue together squid beaks.