One of the very small Phaeocollybias, and so far seemingly restricted to montane habitats in Central America where Comarostaphylis arbutoides occurs above timberline or just below where that plant occurs with oak (Quercus costaricensis).
Herbarium specimen RE Halling #8357 (NY).

[admin – Sat Aug 14 01:59:42 +0000 2010]: Changed location name from ‘Costa Rica. San Jose. Dota. ~500 m S of Interamerican Highway on road to San Gerardo de Dota’ to ‘~500 m S of Interamerican Highway on road to San Gerardo de Dota, Dota, San Jose, Costa Rica’

Species Lists


Caps no larger than 20 mm and the stipe no wider than 2 mm. Removed from habitat to get an image of the whole thing.

Proposed Names

84% (1)
Recognized by sight: Small, long and slender, deeply radicating stipe
Used references: Halling & Horak. 2008. North American Fungi 3(7): 177-185. 2008 (available online).
Based on microscopic features: Small verrucose basidispores with apical callus, clamps present, cheilocystidia are subfusoid often constricted with swollen apices.

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= Observer’s choice
= Current consensus


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