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
Discodermia calyx Discodermia calyx Discodermia calyx are bowl-shaped sponges that are found in shallow waters in central and southern Japan. These sponges are distributed by the central Kuroshio current and are therefore localized along this current. Like many other sponges, "D. calyx" are very porous. They use the pores in their outer walls to draw in water which they then expel, retaining the nutrients dissolved in the water to nourish themselves. To keep water flowing in and out, the flagella that line their pours beat in either direction. The sponge is most known and used for a molecule that can be extracted