Contractions. - Lact-v. La-v. Lactuca virosa. Nat. ord., Compositae. Fig. - E. B., t. 1957.

Strong-scented Lettuce. For. names: German, Giftiger lattich; French, Laitue vireuse.

Habitat. - Banks and waysides, especially on a chalky soil; common in England.

Flowering time. - June to August.

Parts employed. - The entire fresh plant.

Characters. - A biennial herb, full of acrid milky juice. Stem 2 to 4 feet high, erect, round, branched above, panicled. Leaves horizontal, oblong, auricled, and clasping, prickly on the keel, mucronate-dentate or sinuate. Flowers yellow. Heads scattered; bracts cordate, acute. Fruit striated; beak about as long as the black fruit.

Time for collecting. - When in flower.

Preparation. - Tincture, corresponding in alcoholic strength with 20 O.P. spirit.

Reference to Horn. Proving. - Hyg., v.

Proper forms for dispensing. - φ and upwards, Tincture, Pilules, or Globules.

Average loss of moisture, 74 per cent.