Streptanthus barbatus bristly edges (no more than 3 centimeters long) and borne on short petioles. Leaves above these are oval to rounded and may clasp the stem. Flowers occur at intervals along the upper stem. Each has a spherical to urn-shaped calyx of keeled sepals under a centimeter long with curving petals barely emerging from the tip. The calyx of sepals is whitish, darkening purple in maturity. The petals are purple. The fruit is a long, flat, curving silique which may be 7 centimeters in length. Streptanthus barbatus Streptanthus barbatus is a species of flowering plant in the mustard family known by
Discodermia calyx from it called calyculin A, which is a colorless oil used in a variety of different studies in modern medicine. "D. calyx" belongs to the Animalia family. Its phylum is "Porifera", which is characterizes it as a sponge. "D. calyx" belongs to the class demospongia and the order tetractinallida. The family that it belongs to is theonellida. Finally, the correct binomial nomenclature for this species of sponge is "Discodermia calyx", which indicates its genus and species. "D. calyx" has no colloquial name, as it is known primarily in scientific and medicinal contexts. "D. calyx" is one of a few sponges