Fig. 6 a. A piece of the capillitial net, × 800.

Fig. 6 b. A single spore, × 800.

Lepidoderma tigrinum (Schrad.) Rost., [p. 145.]

Fig. 7. A group of sporangia, × 20.

EXPLANATION OF PLATE XV

Physarum confertum Macbr. n. n., [p. 64.]

Fig. 1. Sporangia on a bit of leaf, × 4.

Fig. 1 a. Capillitium, × 800.