Silene marmorensis a terminal cyme of flowers at the top of the stem, and some flowers may occur in the leaf axils. Each flower has a hairy, veined calyx of fused sepals. The flowers bloom at night, the five pinkish or green-tinged petals opening at the tip of the calyx. This species is threatened by logging operations and other degradation of its habitat. Silene marmorensis Silene marmorensis is a rare species of flowering plant in the pink family known by the common names Marble Mountain catchfly, Marble Mountain campion, and Somes Bar campion. It is endemic to the southern Klamath Mountains of
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