Observation 48556: Muellerella pygmaea var. athallina (Müll. Arg.) Triebel

parasitic fungus growing on apparently a dead Lecidea fuscoatra (pigment lacking and couldn’t find any spores in sections of several well-formed apothecia), in chaparral at around 2000’

This lichenicolous fungus is listed as “relatively common throughout Arizona and southern California”. It is known to parasitize “more than 100 species of mainly crustose, often saxicolous, lecanoralean lichens”.

Species Lists


perithecia sections in water at 100x
spores in asci in perithecium in water at 1000x
free spores in water at 1000x

Proposed Names

87% (1)
Used references: Lichen Flora of the Greater Sonoran Desert Region, Vol. II. 2004. Triebel & Kainz.
Based on microscopic features: smooth brown elliptical septate spores, 32-64 spores per ascus

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= Observer’s choice
= Current consensus


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Created: 2010-07-14 20:09:30 CDT (-0400)
Last modified: 2010-07-14 20:09:32 CDT (-0400)
Viewed: 37 times, last viewed: 2019-03-26 18:55:41 CDT (-0400)
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