(Queen's Root.)

Origin. - The dried root of Stillingia sylvatica L., a perennial herb growing in dry and sandy soil in the Southern United States as far north as Eastern Virginia.

Description and Properties. - About 1 foot (30 Cm.) long and nearly 2 inches (5 Cm.) thick, subcylindrical, slightly branched, compact, wrinkled, tough, grayish-brown, breaking with a fibrous fracture, showing a thick bark and porous wood, inner bark and medullary rays having numerous yellowish-brown resin-cells. The odor is peculiar and unpleasant; the taste bitter, acrid, and pungent.

It contains an acrid resin, sylvacrol, a volatile and a fixed oil, starch, gum, tannin, and a glycoside.

Dose. - 15-30 grains (1.0-2.0 Gm.).

Official Preparation

Fluidextractum Stillingiae - Fluidextracti Stillmgiae - Fluidextract of Stil-lingia. - Dose, 1/4-1 fluidram (1.0-4.0 Cc.) [30 minims (2 Cc.), U. S. P.].

Physiological Action. - The action of stillingia resembles that of sarsaparilla, the drug increasing the various secretions and stimulating the heart and circulation.