Sapindaceae; (quebrachillo) Berberis ruscifolia Lam.; Berberis spinulosa A.St.-Hil.; Berberidaceae; Argentina resp. Brazil (quebrachill(a)o) Cojoba arborea (L.) Britton & Rose; Fabaceae; Nicaragua Diatenopteryx sorbifolia Radlk.; Sapindaceae; (quebrachillo, quebrachillo blanco) Diphysa americana Benth.; Leguminosae; Honduras; (quebracho de cerro) Handroanthus chrysanthus (Jacq.) S.O.Grose; Bignoniaceae; Honduras, Guatemala; Handroanthus impetiginosus (Mart. ex DC.) Mattos Krugiodendron ferreum Urban; Rhamnaceae; Cuba, Belize, Honduras; also (quiebraho, quiebrahacha); Puerto Rico, Dominican Republic, Belize Leptolobium elegans Vogel; Fabaceae; Paraguay (quebracho negro) Libidibia paraguariensis (D.Parodi); Fabaceae; (quebracho negro) Lonchocarpus michelianus Pittier; Leguminosae; Salvador Lysiloma acapulcense Benth.; Leguminosae; Honduras Lysiloma auritum (Schltdl.) Benth.; Leguminosae; Honduras, Nicaragua (quebracho, quebracho azul) Lysiloma divaricatum Steud.; Leguminosae; Salvador (quebracho, quebracho azul) Maytenus magellanica (Lam.) Hook.f.; (quebracho, quebrachito), Maytenus ilicifolia (quebrachill(a)o) Pentaclethra macroloba (Willd.) Kuntze; Fabaceae; Costa Rica) Pleuranthodendron lindenii (Turcz.) Sleumer; Salicaceae; Costa Rica (quebracho blanco) Piptadenia constricta MacBride; Leguminosae; Salvador Poeppigia procera Presl.; Leguminosae; Salvador (quebracho blanco) Sloanea jamaicensis Hook.; Elaeocarpaceae; Jamaica Thouinia striata Radlk.; Sapindaceae; Puerto Rico Tipuana tipu (Benth.) Kuntze; Fabaceae; (quebracho blanco alto) Weinmannia organensis Gardner; Cunoniaceae; (quebracho crespo) as false quebracho or quebracho falso Qualea cordata Spreng.; Vochysiaceae; Paraguay, Brazil Wood Quebracho wood from Schinopsis spp is red-colored and very hard. Other names for the wood are: Quebracho chaqueño - Argentina Quebracho - Argentina Quebracho macho - Argentina Quebracho moro - Argentina Quebracho negro - Argentina Quebracho santiagueño - Argentina Barauna - Brazil Brauna - Brazil Quebracho - Brazil Quebracho hembra - Brazil Quebracho cornillo (= Schinopsis lorentzii) - Brazil Quebracho femea (= S. balansae) - Brazil Quebracho rubio - Paraguay Soto negro - Paraguay Tannins Quebracho produces tannins that can be extracted in quebracho sawmills from the heartwood of both red (Schinopsis lorentzii) and white quebracho (Aspidosperma quebracho-blanco). Logs are inserted into planers to produce chips that are used to produce the quebracho extract by boiling them in vats. It is used for fine leather tanning and imparts a red-brown color. Ordinary or warm soluble quebracho (also known as insoluble Quebracho) is the natural extract obtained directly from the quebracho wood. This type of extract is rich in condensed tannins of natural high molecular weight (phlobaphenes), which are not easily soluble. Its use is therefore limited to addition of small amounts during the process of tanning leather intended for shoe soles in hot liquids (temperature above 35 °C) to improve the yield and the water-proofness of the leather. The cold soluble extracts are obtained by subjecting the ordinary extract to