Anthrones anthraquinones

Hoestery, D. C., and G. M. Letson Trapping of photocarriers in anthracene by anthraquinone, anthrone and naphthacene. J. Phys. Chem. Solids 24,1609 (1963). 

Lonsdale, K., Nave, E., and Stephens, J. F. X-ray studies of a single crystal chemical reaction photooxide of anthracene to (anthraquinone, anthrone). Phil. Trans. Roy. Soc. (London) A26, 1-31 (1966). 

Adinolfi, M, Lanzetta, R, Marciano, C E, Parrilli, M, Giuliu, A D, A new class of anthraquinone-anthrone-C-glycosides from Asphodelus ramosus tubers. Tetrahedron, Al, 4435-4440, 1991. 

Besides leaves, roots are also a storage site for the accumulation of many interesting secondary metabolites such as anthraquinones, pre-anthraquinones, anthrones, chromones, alkaloids, flavonoids, conmarins. 

---