The occurrence ofTolypella(Characeae) in Libya is recorded for the first time. Also for the first time, the structural development of the male and female fructifications (the globule (antheridium) and the nucule (oogonium) respectively) inTolypella nidifca(O. Müll.) A.Br. is described. Both the globule and the nucule show the same course of development as is seen inChara.In the final structure of the globule, however, there are two stalk cells inTolypella, while only a single cell is present inChavaandNitella.The corona has ten cells in two tiers of five each, as inNitella, but inCharathere is only a single tier of five cells forming the corona