Sedum spectabile Bor

A second ketoheptose was found soon thereafter it occurs in the free state in the herbaceous perennial Sedum spectabile Bor. and it was named sedoheptose, which later became sedoheptulose. Its reduction by sodium amalgam yielded two crystalline heptitols, the identification of which was finally established by Ettel, after one of them had been found to... 

Occurrence. Sedoheptulose was found originally in Sedum spectabile, Bor, a common, herbaceous, perennial plant used for decorative purposes (121). It has since been detected in many of the succulent plants, and, indeed, as an intermediate of photosynthesis, it may be present to some extent in all green plants. 

---