Pulsatil'la (Anem'one) vulgar'is, P. Praten'sis, or P. Pa'tens, Pulsatilla, Pasque Flower, N.F. -- The dried herb with not more than 5 p.c. of foreign organic matter; Europe (England, Siberia). Perennial herbs, 10-25 Cm. (4-10') high, covered with soft, silky hairs. Leaves and flowering scapes matted, silky-villous, petioles hollow often purplish, blades pinnately cleft, flowering scape up to 30 Cm. (12') in length, solid below, hollow above, flowers purplish, terminal, bell-shaped, 6 sepals, fruit achene, plumose-tailed; nearly odorless; taste acrid. Powder, brownish -- thick-walled hairs, tracheae, stomata, epidermal cells with wavy vertical walls, calcium oxalate crystals and starch grains few or absent; contains anemonin (activity -- volatile, causing drug to be inert after 1 year), acrid anemone camphor, volatile oil, iso-anemonic acid, CHO, ash 10 p.c.  Sedative, anodyne, mydriatic, diuretic, diaphoretic, emmenagogue, expectorant, resicant, emetic, poisonous -- similar to aconite, causing tingling, numbness, reducing respiration, temperature, cardiac and arterial tension, paralysis of motion and sensation; dysmenorrhea, bronchitis, asthma, whooping-cough, gastritis, epididymitis, orchitis, conjunctivitis, eczema, ulcers, meningitis.  Poisoning: Symptoms and treatment similar to aconite.  Dose, gr. 1-5 (.06-.3 Gm.); 1. Tinctura Pulsatillae, 10 p.c. (75 p.c. alcohol), dose mxv-30 (1-2 cc.).  Extract (expressed juice + alcohol), gr. 1/2-3 (.03-.2 Gm.); Homeopathic tincture (extract); anemonin, gr. 1/4-3/4 (.016-.05 Gm.).  P. hirsutis'sima (Anemone pa'tens var. Nuttallia'na); herb, U.S.P. 1880, W. N. America, flowers whitish, purplish, sepals 5-7,--2.5-4 Cm. (1-1/3/5') long, developed before the leaves; A.quinquefo'lia (nemoro'sa), Wood Flower, Wood Anemone, N. America; flowers purplish-white, A. corona'ria, A. sylves'tris, and A.ranumculoi'des, Levant, Asia, Europe, are all acrid and deteriorate upon drying.