This Lepidella of subsect. Gymnopodae has been found at only two sites under Quercus sp. in the northern Cordillera Talamanca and near La Amistad in the south under Q. seemannii. When described, it will become the third known taxon of this poorly understood subsection; the other two taxa are from Malaya and Australia, viz. A. gymnopus and A. ochrophylla. Distinctive features include the ochraceous lamellae, a broadly clavate stipe that is essentially devoid of volval remnants at the base, rufescent flesh, and a strong unpleasant odor.