The leaves of Chimaphila unibellata.

Characters. - About two inches (5 centimetres) long, oblanceolate, sharply serrate above, wedge-shaped and nearly entire toward the base; coriaceous, smooth, and dark green on the upper surface. It is nearly inodorous, and has an astringent and bitterish taste.

Dose. - 30 to 60 gr.

Officinal Preparation.

u.s.p.

Dose.

Extractum Chimaphilae Fluidum.............................................................

1 fl. dr. (4 gm.)

Composition. - It contains tannin and several neutral principles found in other Ericaceae.

Action. - It is astringent and has a diuretic action.

Use. - It is employed in disorders of the urinary passages and in the treatment of rheumatic pains.