Notes: Code: Bot_665/2012_DSC5432
Habitat: In mixed alpine forest, dominant Fagus sylvatica with some Picea abies and Abies alba; east oriented mountain slope, calcareous bedrock however apparently acid soil (Vaccinium myrtillus); mostly in shade, partly protected from direct rain by tree canopies, average precipitations ~ 3.000 mm/year, average temperature 2-4 deg C, elevation 1.470 m (4.800 feet), alpine phytogeographical region.
Substratum: fallen, debarked trunk probably Fagus sylvatica.
Place: Mt. Mangart region, northeast ridge of Mt.Planja, 1.553 m, East Julian Alps, Posočje, Slovenia EC
Comment: Pileus diameter less than 2 mm; SP whitish-yellow, faint.
Nikon D700 / Nikkor Micro 105mm/f2.8 and Canon G11, 6.1-30mm/f2.8-4.5
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|I’d Call It That||3.0||11.16||2||(amadej,myxomop)|
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I’m certainly not particularly knowledgeable in mycology. It’s just my retirement hobby (in parallel to botany). I believe I’ve not seen B. sulphurina yet or at least I haven’t recognized it as such. From what I read in literature B. sulphurina is smaller (< 2mm and < 1mm diameter according to two references) than B. citrina (1 – 4 mm). It is also always associated with stromatic Pyrenomycetes and grown more clustered. Spores are narrower (2 – 2.5 micr, Mycoweb.com) than with B. citrina (3 -5 micr).
B. citrina is very common where I live. I’ve seen it many times. I can say that it also can grow in clusters and can be of quite different color. So, clustering and color could hardly be a good distinguishing trait between both species. When I observed this large log with thousands of fruitbodies I noticed that cups were regularly smaller than what I usually see (< 2mm). In the field I modestly hoped that this could eventually be B. sulphurina. Also, a kind of blackish layer was covering some parts of moist log, which could eventually be a Pyromicete (not knowledgeable enough to be sure). Nevertheless, spores clearly proved that this is just another B.citrina (to my small disappointment).
Since you are particularly knowledgeable, may i pick your brain for a moment. I have the Fungi of Sweden compendium, and long ago noticed Bisporella sulfurina in it. I RARELY see this as an option for the B. citrina look alike…. could you help me at understand when I may run into that particular species?. The clustering of B sulfurnina is supposed to make it distinctive…
Created: 2013-02-08 11:35:20 PST (-0800)
Last modified: 2013-12-03 17:43:04 PST (-0800)
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