Dicen'tra Canaden'sis or D. Cuculla'ria, Corydalis, Turkey (Squirrel) Corn, N.F. -- The dried tubers with not more than 3 p.c. of foreign organic matter; N. America, Canada to Ky. Low glaucous perennial herb, leaves dissected, scapes several, each with 4 greenish-white, purple-tinged flowers. Tubers spheroidal, ovoid, 10-15 Mm. (2/5-3/5') thick, single, clusters 2-3, smooth or pitted, grayish-brown, translucent; fracture hard, horny, whitish, waxy interior, or granular and tough nearly odorless; taste bitter. Powder, yellowish -- numerous starch grains, few tracheae, stone cells, few calcium oxalate rosette crystals; contains corydaline, fumaric acid, bitter extractive resin, starch. Tonic, diuretic, alterative; syphilitic, scrofulous and cutaneous affections. Dose, gr. 10-30 (.6-2 Gm.); 1. Fluidextractum Corydalis (75 p.c. alcohol): Prep.: 1. Elixir Corydalis Compositum, fldext. 6 p.c., + fldexts. stillingia 6, xanthoxylum 3, blue flag 9, potassium iodide 5, dose, 3j-2 (4-8 cc.). 2. Fluidextractum Stillingiae Compositum, 25 p.c.