Revisión del género Leucaena en México

Abstract

THE REVISION OF THE MEXICAN POPULATIONS OF THE MIMOSACEOUS GENUS LEUCAENA BENTH. (MIMOSOIDEAE; FABACEAE) IS PRESENTED. THIS GENUS OF SHRUBS AND TREES IS NATIVE TO AMERICA, ITS DIVERSITY CENTER LYING ACROSS MEXICO. ON THE BASIS OF THE EXISTING LITERATURE AND THE STUDY OF MORPHOLOGY AND GEOGRAPHIC DISTRIBUTION, NEW TAXA WERE DESCRIBED [L. CONFERTIFLORA SUBSP. CONFERTIFLORA, L. C. SUBSP. ADENOTHELOIDEA, L. CUSPIDATA (STANDLEY) SUBSP. JACALENSIS, L. INVOLUCRATA, L. ESCULENTA (MOC. ET SESSE EX A.DC.) BENTH. SUBSP. MATUDAE, L. LACEOLATA S. WATSON SUBSP. SOUSAE] TWO LECTOTYPES WERE DESIGNATED, AN INTERSPECIFIC HYBRID WAS RECOGNIZED [LEUCAENA X BRACHYCARPA], AND NOMENCLATURE AND SYNONYMS WERE ESTABLISHED -INCLUDING NEW COMBINATIONS [L. MACROPHYLLA BENTH. SUBSP. NELSONII (BRITTON ET ROSE), L. DIVERSIFOLIA (SCHLECHT.) BENTH. SUBSP. STENOCARPA (URBAN), L ESCULENTA SUBSP. PANICULATA (BRITTON ET ROSE)], SO TO EXPRESS THE KNOWN BIOLOGICAL DIVERSITY OF THE GENUS WITHIN THIS AREA. A TOTAL OF 22 TAXA ARE INCLUDED (14 SPECIES, 18 SUBSPECIES). A KEY, DISTRIBUTION, HABITAT, PHENOLOGY, COMMON NAMES AND USES, AS WELL AS A BRIEF DISCUSSION IS INCLUDED FOR EACH ONE.