P. atrovolvatus grows singly or gregariously on decaying bamboo stumps or soil associated with the leaf-litter of bamboos.The fruit body is granular or cap is smooth never reticulated and the indusium hangs down from the lower margin of the cap about the halfway of the length of fruit body, volva or egg is always black in colour, stipe is white spongy. Oval shaped egg 2×3cm, exoperidium thin membranous, almost black, volva smooth. Odor strong, sweet, aromatic (never fetid). The stalk in a fully expanded fruit body measure 10–13× 2–2.5 cm, cylindrical, gradually broader towards base with an apical pore in the apex, hollow, spongy, white, head 2-2.5 cm long and 2-3 cm broad at base. Indusium hangs 5-6cm down below the cap (midway between cap and volva). Its white in colour and becomes yellowish white on drying. Basidiospores are cylindrical, smooth, hyaline, measure 3 -4.2×1.1-1.7 μm.
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Created: 2013-10-06 01:24:49 CDT (-0400)
Last modified: 2013-10-06 08:18:25 CDT (-0400)
Viewed: 12 times, last viewed: 2017-06-16 16:25:21 CDT (-0400)