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 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