Casta'nea denta'ta, Castanea, Chestnut Leaves, N. F. -- The dried leaves with not more than 5 p.c. of stems or other foreign organic matter; N. America, W. Asia, S. Europe. Stately tree, 24-30 M. (80-100 degrees) high; wood light, durable; flowers in 3's, monoecious -- staminate and pistillate, involucre 4-lobed, becoming prickly; fruit, 4-valved involucre enclosing 1-3 l-seeded nuts. Leaves entire, slightly broken, folded or matted together, 15-25 Cm. (6-10') long, 5 Cm. (2') wide, oblong-lanceolate, acuminate, sharply serrate, coriaceous, dark green above, lighter beneath, pinnately veined, petiole stout; odor slight; taste astringent; Powder, greenish -- non-glandular hairs numerous calcium oxalate crystals in rosettes, prisms, parenchyma cells with brown tannin masses which + ammonio-ferric alum T.S. -- blue; contains tannin 9 p.c., resin, fat, gum, albumin, ash 6 p.c.; fruit contains starch 35 p.c., fat 2 p.c., proteins 3-4 p.c., sugar 1-2 p.c.; solvents: boiling water, alcohol partially. Tonic mild sedative, astringent; whooping cough, controlling paroxysms, dysentery; wood resists exposure greatly, nuts a delicacy, thoroughly edible. Dose, gr. 15-60 (1-4 Gm.); 1. Fluidextractum Castaneae (100 Gm., + boiling water to exhaust, evap. to 200 cc., add alcohol 60 cc., lastly glycerin 10, dose, mxv-60 (1-4 cc.). Infusion.