Sexual thalli dioecious. Carpogonial branches (Fig. 25E) borne on the basal to third cell of the cortical branch tufts, almost straight, of 4 cells with a conical carpogonium. Zygote dividing transversely (Fig. 25F), the upper cell segmenting obliquely to produce a dense compact carposporophyte (Fig. 25G) 120–200 µm across in surface view, of relatively few cells, the end cells developing into ovoid-clavate carposporangia (Fig. 25G) 16–25 µm long and 8–11 µm in diameter; new carposporangia proliferating from cells below sheaths of previous ones. No fusion cell developed. Sterile post-fertilization filaments develop from cortical cells (Fig. 25F, G) adjacent to the carpogonium, and form a slight and loose involucre around the carposporophyte, consisting of filaments similar to the cortical filaments (Fig. 25G). Spermatangia (Fig. 25H) produced at apex of cortical filaments, from a globose-ovoid head 40–70 1.1m across, consisting of a central row of 4–6 cells cutting off 2–3 orders of cells, the ultimate elongate spermatangial initials cutting off ovoid spermatangia 2–4 µm in diameter.
Tetrasporophyte with irregularly divided tetrasporangia and monosporangia.
Sexual thalli dioecious. Carpogonial branches (Fig. 25E) borne on the basal to third cell of the cortical branch tufts, almost straight, of 4 cells with a conical carpogonium. Zygote dividing transversely (Fig. 25F), the upper cell segmenting obliquely to produce a dense compact carposporophyte (Fig. 25G) 120–200 µm across in surface view, of relatively few cells, the end cells developing into ovoid-clavate carposporangia (Fig. 25G) 16–25 µm long and 8–11 µm in diameter; new carposporangia proliferating from cells below sheaths of previous ones. No fusion cell developed. Sterile post-fertilization filaments develop from cortical cells (Fig. 25F, G) adjacent to the carpogonium, and form a slight and loose involucre around the carposporophyte, consisting of filaments similar to the cortical filaments (Fig. 25G). Spermatangia (Fig. 25H) produced at apex of cortical filaments, from a globose-ovoid head 40–70 1.1m across, consisting of a central row of 4–6 cells cutting off 2–3 orders of cells, the ultimate elongate spermatangial initials cutting off ovoid spermatangia 2–4 µm in diameter.Tetrasporophyte with irregularly divided tetrasporangia and monosporangia.
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