Contractions. - Cist. Cis.

Nat. ord., Cistaceae.

Synonyms. - Helianthemum Canadense, H. Corym-bosum, H. rosmarifolium, Lechea major.

Fig. - Sweet Cist., pl. 21.

Rock-rose, Frostwort. For. names: German, Das Cisten roschen Canad.; French, Le Ciste Canade; Italian, Cistro; Spanish, Jar a.

Habitat. - In dry, sandy soils; Canada to Florida.

Flowering time. - June to September; April in the Southern States.

Parts employed. - The entire plant.

Characters. - Stem at first simple. Flowers, the primary or terminal, large and petaliferous, few or solitary, on peduncles scarcely larger than the flower; the secondary, axillary, very small, nearly sessile, solitary or somewhat clustered on leafy branches. Leaves oblong, or somewhat lanceolate.

Time for collecting. - When in flower and seed.

Preparation. - Tincture, corresponding in alcoholic strength with proof spirit.

N.B. - As the plant is not indigenous to this country, the tincture imported from North America must be used.

Reference to Horn. Proving. - Hering's New Provings, Philadelph., 1866.

Proper forms for dispensing. - φ and lx, Tincture only. 1 and upwards, Tincture, Pilules, or Globules.