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
Hibiscus acetosella plant and are generally the size of a small child's hand, about 10×10 cm. They tend to be alternate, simple, and deeply cut with crenate or jagged edges. Leaf color is observed as a dark maroon to a patchy red/green appearance. Stipules are linear, measured approximately 1.5 cm in length. Both stems and petioles (3–11 cm in length) are smooth or generally free from hair. Acetosella is further divided into a section called Furcaria, which is a group of approximately 100 species that have non-fleshy calyx or sepals. The sepals contain 10 veins, 5 of which run to the apices