Morfología del polen y distribución de Lopezia longiflora (Onagraceae)

Abstract

THE POLLEN MOPRPHOLOGY AND DISTRIBUTION OF LOPEZIA LONGIFLORA DECNE. (ONAGRACEAE) ARE PRESENTED. RECENT COLLECTIONS OF PLANT SPECIMENS BROADEN ITS RANGE TO THE STATE OF GUERRERO, MEXICO. THE PRESENCE OF AN ADDITIONAL STAMEN IN ONE SPECIMEN SIGGESTS A RESEMBLANCE TO LOPEZIA LOPEZIOIDES HOOK. ET ARN. THE ACETOLYSIS AND OBSERVATION USING SCANNING ELECTRON MICROSCOPE OF THE POLLEN GRAINS INDICATE THAT THE POLLEN MORPHOLOGY SHOWS SOME SIMILARITIES TO THAT OF LOPEZIA SEMEIANDRA PLITMANN, RAVEN ET BREEDLOVE AND CLARKIA BREWERI GREENE.