Penthaclethra. Penthaclethra macrophylla. Owala grains.

Botanical name: 

Penthaclethra. Penthaclethra macrophylla Benth. (Fam. Leguminosae.) Owala Grains.—The seeds of this plant, which grows in the Congo States, are said to contain an alkaloid, paucine, crystallizing in yellow foliaceous crystals, melting at 126° C. (258.8° F.), insoluble in ether and chloroform, having the formula C27H38O5.5. (P. J., lix.) Paucine hydrochloride, C27H39O5.5 2HCl + 6H2O, is marketed by Merck and Co., and is stated to be physiologically inactive.

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