Streptanthus cordatus stem. Flowers occur at intervals along the upper stem. Each has a calyx of sepals roughly a centimeter long which begin greenish yellow and mature purple. Four purple petals emerge from the tip of each calyx. The fruit is a thin, narrow silique which may reach 14 centimeters in length or longer. Streptanthus cordatus Streptanthus cordatus is a species of flowering plant in the mustard family known by the common name heartleaf twistflower. It is native to the western United States, where it can be found in many types of sagebrush, woodland, and forest habitat. It is a perennial herb
Calyx-Krater by the artist called the Painter of the Berlin Hydria depicting an Amazonomachy 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 vase in the red figure style, now in the Metropolitan Museum of Art, New York. It is a krater, a bowl made for mixing wine and water, and specifically a calyx-krater, where the bowl resembles the calyx of a flower. Vessels such as these were often used at a symposion, which was an elite party for drinking. Warfare depicted in Greek art was often not representative