Arquitectura foliar de las especies de Myrtaceae nativas de la flora Argentina II: Grupos "Myrteola" y "Pimenta"

Summary: Foliar architecture of native species of Myrtaceae of the Argentinean flora II: Groups “Myrteola” and “Pimenta”. This work is part of an integrated study of leaf architecture of Myrtaceae native species of Argentina. Seventeen native species of native flora were studied to find patterns of leaf architecture to differentiate the Argentinean species of the informal subtribal: “group Pimenta” and “group Myrteola”, Tribu Myrteae (Family Myrtaceae). The leaves studied in this work are characterized by being simple, with apex and base variable, membranaceous to coriaceous in texture, and with entire margin or slightly crenate. Its venation pattern is characterized by having the first vein category pinnate, simple, and straight, without agrophic veins; venation of secondary category is brochidodromous-camptodromous veins (except in Myrteola nummularia that there was a pattern acrodromous-brochidodromous), with one or none paramarginal vein and intramarginal vein; the third and fourth vein category are percurrent alternate, percurrent alternate and opposite, random reticulate or branched, the areolae vary from undeveloped to fully developed and venules branching one, two, or more times.