IOWA ACADEMY OF SCIENCES. 
35 
The list of species that here follows exhibits, accord- 
ingly, many familiar types: 
1. Fuligo ovata (Shaeff) Macbr. One specimen; very 
small. 
2. Physarum nefroideiun Rost. Common; but specimens 
all immature. 
3. Tilmadoche alba (Bull.) Macbr. Common; typical. 
4. Tilmadoche viridis (Bull.) Sacc. Common; typical. 
5. Leocarpus frag ills (Dicks) R. Abundant; typical. 
6. Reticularia lycoperdon Bull. Only one specimen; 
typical. 
7. Crihraria aurantiaca. Immature; scarce. 
8. Piety dium cancellatum (Batsch) Macbr. Rare; small. 
9. Lamproderma arcyrionema Rost.. Rare; variable. 
10. Stemonitis maxima Schw. Rare; the tufts short and 
small, but the spores typical. 
11. Stemonitis axifera (Bull.) Macbr. Rare; a single 
tuft collected; the specimens typical except that the spores 
are nearly smooth. This may yet be 8. ferruginea Ehren- 
burg. 
12. Stemonitis smithii Macbr. Sporangia rather large; 
spores smooth and small as usual. 
13. Stemonitis ivehheri Rex. The specimens here referred 
agree in many particulars with Rex’s type but differ in the 
symmetry, beauty and uniformity of the capillitial meshes. 
These are not quite so large, but are fine, open and per- 
sistent. Some free tips appear rather more prominent 
than is usual in Stemonitis. The spores are minutely 
roughened; under the lens purplish or violaceous brown. 
The tufts are small, about eight or ten mm. high; the 
stipe short and hypothallus well developed, A New Mex- 
ican variety. 
14. Comatricha stemonitis (Scop.) Sheld. Rare: typical; 
only one gathering. 
15. Lycogola egidendrum (Bux.) L. One typical spec- 
imen so far collected. 
16. Arcyria nutans (BnW.) Typical: not common. 
17. Arcyria incarnata Pers. Typical, the colonies, how- 
ever, very small and scattered. 
