Plant reproductive morphology is asexual, producing only spores. Similarly, flowers produced by the sporophyte may be described as "unisexual" or "bisexual", meaning that they give rise to either one sex of gametophyte or both sexes of gametophyte. The flower is the characteristic structure concerned with sexual reproduction in flowering plants (angiosperms). Flowers vary enormously in their construction (morphology). A "complete" flower, like that of "Ranunculus glaberrimus" shown in the figure, has a calyx of outer sepals and a corolla of inner petals. The sepals and petals together form the perianth. Next inwards there are numerous stamens, which produce pollen grains, each containing a
Calyx-Krater by the artist called the Painter of the Berlin Hydria depicting an Amazonomachy sitting calmly on her horse. Beside her is a crouched Amazon who appears to be striking something behind the horse. To the right of that Amazon is another Greek soldier leaning away with an ax raised above his head. On the far right is an Amazon with an ax raised above her head apparently preparing to strike a Greek soldier around the side of the vase. Calyx-Krater by the artist called the Painter of the Berlin Hydria depicting an Amazonomachy The calyx-krater by the artist called the "Painter of the Berlin Hydria depicting an Amazonomachy" is an ancient Greek painted