Sometimes an annular one bordering the pileus and bulb is left clinging part way up on the stem, as shown in Fig.
"Studies of American Fungi. Mushrooms, Edible, Poisonous, etc."
George Francis Atkinson
Plasmodiocarp globose or oblong to elongated, and bent or flexuous, sometimes annular or branched and reticulate, dull brown in color; the wall a thin yellowish membrane, with a thin yellow-brown outer layer, irregularly dehiscent.
"The Myxomycetes of the Miami Valley, Ohio"
A. P. Morgan
Plasmodiocarp terete and more or less elongated, bent and flexuous, sometimes annular or reticulate, the surface not polished, brownish in color; the wall a thin yellow membrane, covered on the outside by a more or less thickened brown layer of scales and granules, irregularly dehiscent.
"The Myxomycetes of the Miami Valley, Ohio"
A. P. Morgan