Issued in 1961 for the TEMEX-61 philatelic exhibition, this elegant Argentinian semi-postal stamp depicts the blossoms of the Lapacho Negro (Tabebuia ipe), one of South America’s most admired flowering trees. Printed in rich brown tones by Casa de Moneda and designed by Héctor Viola, the stamp carries a dual denomination of 5 + 5 Pesos, with the surcharge supporting charitable causes. Its intricate floral engraving and botanical theme make it a distinguished item in Argentina’s commemorative flora issues of the early 1960s.