The sporeling development inFrullania tamarisci(L.) Dum

The sporeling development in Frullania tamarisici (L.) Dum. ssp. tamarisci is described for the first time. Its pattern belongs to the Frullania-type in which a globose, many-celled protonema is formed within the stretched exospore. The primary leaves are ovate to oblong, followed by the saccate-inflated juvenile leaves. In the juvenile stage each underleaf is associated with a single leaf.