Wing., p. 169.

Fig. 3. Sporangia, magnified about 5 times.

_Comatricha pulchella_ (Bab.) Rost., form _C. persoonii_ R., p. 183.

Fig. 4. Sporangia, magnified about 15 times.

See Addenda, d, p. 283.

_Stemonitis carolinensis_ Macbr., p. 170.

Fig. 5. Sporangia, magnified about 5 times.

_Clastoderma debaryanum_ Blytt., p. 191.

Fig. 6. Sporangium, magnified about 60 times.

_Trichia contorta_ Rost., p. 269.

Fig. 7. Tip of an elater, x 1400.

Fig. 7 _a_. Spore of the same species, x 1400.

_Trichia botrytis_ Pers., p. 274.

Fig. 8. Tip of the elater, x 1400.

Fig. 8 _a_. Spore of the same species, x 1400.

[Illustration: PLATE XIII]

EXPLANATION OF PLATE XIV

_Badhamia magna_ Peck., p. 38.

Fig. 1. A cluster, of sporangia, x 10.

_Cienkowskia reticulata_ (Alb. & Schw.) Rost., p. 111.

Fig. 2. Plasmodiocarp, x 15.

Fig. 2 _a_. A bit of the capillitium of the same, x 800.

Fig. 2 _b_. A single spore, x 1000.

_Physarum oblatum_ Macbr., p. 91.

Fig. 3. Sporangia, x 15.

Fig. 3 _a_. A piece of capillitium, x 800.

Fig. 3 _b_. A single spore, x 1000. The roughness much exaggerated.

_Badhamia orbiculata_ Rex., p. 37.

Fig. 4. A group of sporangia, x 10.

_Physarum newtoni_ Macbr., p. 73.

Fig. 5. A group of sporangia, x 16.

Fig. 5 _a_. A single spore, x 1000.

Fig. 5 _b_. A bit of the capillitium, x 800.

_Physarum maculatum_ Macbr., p. 77.

Fig. 6. A cluster of sporangia, x 10.

Fig. 6 _a_. A piece of the capillitial net, x 800.

Fig. 6 _b_. A single spore, x 800.

_Lepidoderma tigrinum_ (Schrad.) Rost., p. 145.

Fig. 7. A group of sporangia, x 20.

[Illustration: PLATE XIV]

EXPLANATION OF PLATE XV

_Physarum confertum_ Macbr. _n. n._, p. 64.

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

Fig. 1 _a_. Capillitium, x 800.

Fig. 1 _b_. A single spore, x 1200.

_Physarum notabile_ Macbr., p. 80.

Fig. 2. A group of sporangia, stipitate form, x 10.

Fig. 2 _a_. A single spore, x 1200.

_Physarum flavicomum_ Berk., p. 93.

Fig. 3. A cluster of sporangia, one closed, x 10.

Fig. 3 _a_. A single spore, x 1200.

_Physarum tropicale_ Macbr., p. 82.

Fig. 4. Sporangia, x 10.

Fig. 4 _a_. Capillitium, x 800.

Fig. 4 _b_. A single spore, x 1200.

_Craterium minutum_ (Leers) Fr., p. 107.

Fig. 5. Sporangia, the stalks unusually long, x 15.

_Physarum penetrale_ Rex, p. 70.

Fig. 6. A group of sporangia; the calcareous c