[3] This species is currently accepted but appears to have received no attention since and may have simply been forgotten about as the issue of Mykologický sborník - Časopis Českých Houbař it was published in is not easily accessible.

Ježek provided only a brief description of this species in Latin and some of the terms used are antiquated now and do not easily translate.

Cap: 2.3cm wide, 1.5cm high and conical when immature expanding to 5.5cm and flattening with age with striations at the edges.

[3] The specimens studied by Ježek were found growing in groups in Cabo Frio, Brazil in 1971 and the description was published in 1973.

[4] The specific epithet nigricans derives from the Latin for 'blackening' and refers to the colouration of the base of the stem.