M. Foliacea
Fig. 11: Part of a male plant. × 2. a. adventitious shoot, c. cupule. Fig. 12: An 8-lobed antheridiophore. × 2. Fig. 13: Under side of the thallus. × 4. m. median scale. Figs. 14-17: Appendages from different plants. × 80. Fig. 18: Part of the rim of the cupule. × 75. Fig. 19: Transverse section of part of the midrib of the thallus. × 75. b. brown or purple zone, c. colourless zone with scattered sclerotic cells, e. epidermis, p. photosynthetic layer. Fig. 20: Air-pore. a. in vertical section. × 200; b, c, d. the internal opening. × 230. b. wide open, c. half-closed, d. closed. Fig. 21: Plant with developing archegoniophores. × 1. p. unfertilized head. Fig. 22: Head of mature archegoniophore. × 2. Fig. 23: Edge of involucre. × 75. Fig. 24: Spores. × 400.