Rhododendron. Rosebay. Rhododendron chrysanthemum.

Rhododendron. Rhododendron Chrysanthemum Pall. Yellow-flowered Rhododendron. Rosebay. Snowrose. Rosage, Fr. Alpenrose, Schneerose, Gichtrose, G. (Fam. Ericaceae.)—The leaves of this rhododendron have long been employed in Siberia as a remedy in rheumatism, and to a less extent in gout and syphilis. They yield their virtue to water and alcohol, and, according to von Archangelski, contain three proximate principles; rhododendrol, C₁₀H₁₂O₂; rhododendrin, C₁₆H₂₂O₇ ; and a glucoside resembling digitalin and very toxic. The dose of the dried leaves is said to be two drachms (7.7 Gm.), given in infusion.

G. F. Kuehnel found in leaves of the "great laurel," Rhododendron maximum L., a common shrub in the Alleghenies from New York to Georgia, arbutin, ericolin, and ursone. (A. J. P., 1885.)

The Dispensatory of the United States of America, 1918, was edited by Joseph P. Remington, Horatio C. Wood and others.