Fig. 3. A in An assessment of the taxonomic status of the Mediterranean endemic genus Acrodiscus Zanardini (Halymeniales, Rhodophyta)

Fig. 3. A. Elliptical outline of a subapical nemathecial sorus. B. Lugol-stained l.s. of a tetrasporangial nemathecium. C. Schematic drawing of terminal tetrasporangia and jacketing nemathecial filaments. D. Horizontally aligned cruciate and decussate-cruciate tetrasporangia within the palisade of nemathecial filaments. Scale bars: A = 200 μm; B, D = 20 μm.