Materials for the vegetative identification of segetal weeds sprouted from subterranean organs (in Romanian)

In complement of their paper about the morphology of weed seedlings geminated from seeds (Acta Agron. acada.Sci. Hung., Tom. XVIII, 1969, pp.1-47) in this note the authors presents the results of comparative morphological studies on perennial segetal weeds sprouted from subterranean organs. The verified distinctive characteristics are included in an analitical key which allow the identification of 72 weed species (3 Pteridophytae, 17 Monocotyledoneae, 52 Dicotyledoneae) recurrent on the ploughed fields in Romania.