1266 Wisconsin Academy of Sciences, Arts and Letters. 
Macbride gives a fuller description than the foregoing. 
“Sporangia minute, either closely combined and superimposed, 
so as to form a pulvinate sethalium, or crowded together in a 
single layer, sessile or short stipitate; the peridia thin, mem¬ 
branous, marked by scattered plasmodic granules, often lustrous, 
sometimes dull lead-colored or blackish, especially above ; stipe, 
when present, very short but distinct, brown rugulose.” He 
calls the spores nearly smooth, almost colorless, 6-7.5ft, in di¬ 
ameter. He adds that the sporangia are sometimes free and 
even short-stipitate. In the more complex phase the sporangia 
are heaped together in a pulvinate mass. The hypothallus is a 
prominent feature. 
Lister’s description varies but little from the foregoing. He 
speaks of the sporangium-wall as membranous, yellow-brown, 
uniform, beset with scattered clusters of dark, round, plasmodic 
granules, ly in diameter. He calls the spores faintly warted, 
4-6/x in diameter. 
Massee makes this species a Tubulina (T. effusa Massee). His 
description contains nothing different from the above except 
that he calls the spores yellowish-brown, very indistinctly ver- 
rueulose, 6-8y in diameter. He adds: “Often forming compact, 
flattened cakes extending for three or four inches.” 
We have fine specimens on moss and the decayed wood on 
which the moss grew; the masses are from one-half to two and 
one-half inches long, the most of each mass in a single stratum 
and thin, but in some places the sporangia are superimposed; 
the hypothallus is very marked but not extending beyond the 
sporangia; sporangia not noticeable wrinkled; capillitium none; 
spores almost colorless, faintly warted, 6— iy in diameter. 
These specimens v r ere collected near Wausau in the summer 
of 1394. 
Tubifera ferruginosa (Batsch) Macbr. 
1786. Stemonitis ferruginosa Batsch, Eleuch., p. 261, fig. 175. 
1791. Tubifera ferruginosa Gmelin, Syst. Nat., p. 1472 (ex 
parte). 
Macbride: “Sporangia crowded, cylindric or prismatic, 
elongate, connate, more or less distinct above, pale umber brown, 
generally simple though occasionally branched above, the per- 
