Aspectos fitogeográficos del género Glyceria R. Br. (Poaceae) en la Península Ibérica

Abstract

Four species belonging to the genus Glyceria R. Br. are recognized in the Iberian Peninsula. Their patterns of distribution are related with different mesological features as climate and substrate. G. notata occurs in the half eastern part of Iberian Peninsula wich is mainly constituted by base-rich substrates. G. fluitans shows a western and northerly distribution on chiefly temperate macrobioclimate areas. G declinata reaches its greater extension in the West of the Iberian Peninsula on base-poor substrates within the mediterranean macrobioclimate. Finally, G. spicata is restricted to the Southerwestern warmer territories with a mediterranean macrobioclimate where the genus Glyceria reaches the greatest density of species in the Iberian Peninsula.