Photo by C. G. Lloyd.
Figure 445.—Nidularia pisiformis.
Pisiformis is from two Latin words meaning pea and form.
The plant is gregarious, nearly round, sessile, rootless, hairy, brown or brownish, splitting irregularly.
The sporangia are subrotund or discoidal in form, dark brown, smooth, shining.
The spores are colorless, round or elliptical or pear-shaped, produced on sterigmata, 7–8×8–9µ. Sometimes found on the ground and on leaves, but their favorite home is an old log. Found from July to September.