THE SLIME MOLDS OF OHIO 
37 
11. C. violacea Rex. Sporangia gregarious, globose or ellipsoid, very 
minute, 0.2mm. in diam., bluish purple, stalked, erect or slightly inclined. 
Cup from one-third to two-thirds the height of the sporangium, with a 
toothed margin. Net of slender threads connecting flat, broadly 
expanded, angular nodes. Stalk long, slender, subulate, dark. Spores 
lilac, minutely roughened, 7 to 8mmm. in diam. 
(Hamilton Co.— Lloyd Herbarium). 
FAMILY 7. TUBIFERACEAE. 
Sporangia closely compacted or combined into an aethalium. Spor¬ 
angia well defined, tubular, lateral walls usually entire. Capillitium want¬ 
ing 
KEY TO THE GENERA OF TUBIFERACEAE. 
A. Sporangium wall containing clusters of dark plasmodic granules. 1. Lindbladia 
A. Sporangium wall without plasmodic granules. 2. Tv.bifera 
1. LINDBLADIA Fries. 
Lindbladia effusa (Ehrenb.) Rost. Plate VI, Figs. 5, 5a, and 5b. 
Sporangia combined into an aethalium, sometimes distinct when the 
sporangia may be sessile or stalked. Sporangium wall membranous, 
studded with clusters of dark microscopic granules. 
1. L. effusa (Ehrenb.) Rost. Sporangia minute, combined into an 
aethalium 2 to 10mm. thick, brown or black. Sporangium wall 
membranous, entire or perforated, containing clusters of dark microscopic 
plasmodic granules. Spores ochraceous brown, nearly smooth, 5 to 
6mmm. in diam. 
Erie Co., (Miami Valley—Morgan), (Ohio—Lister. 
2. TUBIFERA Gmelin. 
Tubifera ferruginosa (Batsch) Gmel. Plate VI, Figs. 3 and 3a. 
Tubifera stipitata (B. and R.) Macbride. Plate VI, Fig. 4. 
Sporangia tubular, crowned on a common hypothallus, opening at the 
apex. Sporangium wall membranous, brown, without plasmodic granules. 
A, Columella absent. 
B. Group of sporangia sessile. 1. T. ferruginosa 
B. Group of sporangia on stalk like hypothallus. 2. T. stipitata 
A. Columella present. 3. T. casparyi 
1. T. ferruginosa (Batsch) Gmel. Sporangia densely crowded, 
cylindrical, angled by mutual pressure, 3mm. high, about 0.4mm. wide, 
pale brown. Hypothallus thick, spongy. Sporangium wall membranous, 
brown. Spores pale rufous brown, minutely reticulated over three-fourths 
of the surface, 5 to 8mmm. in diam. 
Common. 
