Quassia

(kwosh’e-ah) [after Qua i, a negro who used it as a remedy]. A genus of simarubaceous tropical plants. @Q. ama’ra, of South America, affords the true and original qua ia wood. The wood of Q. (Picra’na) excel’sa, a tree of tropical America, contains qua in, and is a tonic and stomachic. It is used in dyspepsia, atonic diarrhea, and as an enema in the irritation caused by pin-worms. Dose of extract, 1-3 gr. (0.066-0.2 gm.); of fluidextract, 5-10 min. (0.33-0.66 c.c.); of tincture, 30-60 min. (2-4 c.c.).