Tetrasporic twigs of P. lucida, leg. Berggren, det. J. Agardh. Sori shown black. Fig. 11.—“Littoralis” form from Hokianga, in Herb. Auck. Mus. (Berg. 1). Fig. 12.—“Robust” form from Bay of Islands, in Herb. Dom. Mus. (Berg. 2).