THE SLIME MOLDS OF OHIO 
9 
KEY TO THE GENERA OF PHYSARACEAE 
A. Network of capillitium calcarious thruout. 1. Badhamia 
A. Network of capillitium consisting of hyaline threads with expansions containing 
lime granules. 
B. Fructification aethaloid. 
B. Fructification of distinct sporangia. 
C. Sporangium wall with lime. 
D. Sporangia tubular. 
D. Sporangia goblet shaped. 
D. Sporangia variously shaped. 
C. Sporangium wall without lime. 
E. Sporangia forming net like plasmodiocarps. 
E. Sporangia distinct, shining. 
A. Capillitium without lime. 
F. Outer sporangium wall with lime. 
F. Sporangium wall without lime. Stalk with lime. 
1. BADHAMIA. Berkeley 
Badhamia rubiginosa (Chev.) Rost. Plate 1, Fig. 1, la, and lb. 
Badhamia papaveracea Berk. Plate 1, Fig. 2. 
Badhamia panicea Rost. Plate 1, Fig. 3. 
Sporangia distinct or united into plasmodiocarps; stalked or sessile; 
sporangium wall of a single layer with included lime granules; capillitium 
a course network filled thruout with lime granules, except that in some 
species the narrower strands may be destitute of lime. Spores clustered 
into groups of from 6 to 20 or separate. 
A. Spores clustered. 
B. Spores closely adhering in clusters of from 6 to 10; stalk dark colored. 
1. B. papaveracea 
B. Spores loosely adhering; stalk light colored, often absent. 
C. Spores dark brown, in clusters of 8 to 20. 2. B. capsulifera 
C- Spores bright brown or violet, in clusters of 6 to 10, sometimes separate 
3. B. utricularis 
A. Spores separate. 
D. Sporangia yellow. 4. B. decipens 
D. Sporangia gray. 
E. Sporagia always sessile. 5. B. panicea 
E. Sporangia generally stalked. 
F. Sporangia subglobose; stalks black below, white above. 
6. B. affinis 
F. Sporangia discoid; stalk black. 7. B. orbiculata 
D. Sporangia pink or brown. 
G. Sporangia sessile; columella absent. 8. B. lilacina 
G. Sporangia stalked; columella present. 9. B. rubiginosa 
1. B. papaveracea Berk, and Rav. Sporangia distinct, gregarious, glo¬ 
bose, 0.7mm. in diam., gray, stalked; sporangium wall with little lime. 
Stalk dark brown or black, short. Capillitium a network with large 
expanded thin nodes. Spores purplish brown, closely adherent into groups 
2. Fuligo 
4. Physarella 
5. Craterium 
3. Physarvm 
6. Cienkoivskia 
7. Leocarpus 
8. Diderma 
9. Diachaea 
