· vulgar Names: "ceibo colorado", "seibo", "chopo", "zuinandi", "sihiñiandi" in guaraní; "peié-suket", (red fruit) in vilela; "nainík", "kaperan(a) rá llâlé" (daughter of the drunk wood), "botarañí Imá" (house of the duck picaso) in tufa; "corticeira", "sananduva", "sumavreira crista of galo", "erythrine" (Brazil); "cre'te-of-coq" (France); "commons choral tree" (England); "piñón francés" (Cuba).
· geographic Distribution and habitat: One disperses from the south from Brazil, Paraguay and Uruguay to Argentina (Jujuy, Jumps, Tucumán, Santiago of the Matting, Formosa, Chaco, Missions, Currents, Between Rivers, Santa Fe and Buenos Aires) forming seibales in inundables places or pajonales, albardones, bordering rivers and streams.
· Brief description of the plant: Tree of up to 10 m.s of height, with recurvos stings and foliage I expire. Great leaves glabras, with 1-3 oval stings in the inferior of pecíolo, folíolos or elliptical-lanceolados face of 3-11 cm. in length. Flowers ready in clusters, red intense, of 3-6 cm. in length, fleshy. Fruit, bent case, of 10-20 cm. in length, chestnut tree dark, with 1-6 reniformes seeds. It blooms from November to February.
· Uses and used part: The leaves are used as antihemorroidal of external use; like antiseptic and astringent, the crust of the stem; narcotic, the leaves, flowers and crust of the stem; in order to dye the wool and the cotton; the flowers; in sculptures, wooden plugs, rafts, wheels, etc., the wood. It is a ornamental plant and it was declared Argentine national flower in 1942.
· Component isolated chemistries: In nor: hipaforina; eritratina, eritralina, eritramina; alkaloid and erisonina.