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16-02-2026 21:25

Andreas Millinger Andreas Millinger

Good evening,failed to find an idea for this fungu

17-02-2026 09:41

Maren Kamke Maren Kamke

Good morning, I found a Diaporthe species on Samb

08-12-2025 17:37

Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

17-02-2026 17:26

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous, Je recherche cette publication :

03-02-2013 19:50

Nina Filippova

Good time), I've compared this specimen with the

15-02-2026 04:32

Tomaz Vucko Tomaz Vucko

One more specimen that is giving me some descent a

17-02-2026 13:41

Isabelle Charissou

Bonjour, est-ce que quelqu'un pourrait me fournir

16-02-2026 18:34

Thierry Blondelle Thierry Blondelle

Bonjour,La micro de cet anamorphe de Hercospora su

16-02-2026 17:14

Joanne Taylor

Last week we published the following paper where w

16-02-2026 16:53

Isabelle Charissou

Bonjour, quelqu'un pourrait-il me transmettre un

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Phaeoheloitum sp.? - 248258
Danny Newman, 26-10-2017 23:03
Danny Newmanasci 8-spored, up to 90 × 8?m, w/ weakly amyloid tip, ascoplasma dextrinoid1; paraphyses filiform with slightly enlarged apex, exceeding asci by 10-20?m; spores mostly still inside asci (immature?), those found in media broadly ellipsoid, roughened (?).

2nd to last micrograph was taken of an unusual (sterile?) area of tissue, which had been a similar yellowish reddish brown as the other tissues, but turned a rich blue-green after being left on the slide for ~20-30 minutes.


Spores:


(8.5) 8.6 – 10.5 (12.1) × (4.1) 4.13 – 5.6 (5.8) µm
Q = (1.6) 1.63 – 2.4 ; N = 14
Me = 9.7 × 4.9 µm ; Qe = 2


8.96 5.58
8.67 4.69
8.62 5.30
9.74 5.33
9.92 4.10
9.72 5.17
10.03 4.13
9.35 5.30
9.87 5.17
9.96 4.44
12.09 5.76
10.52 5.06
9.43 4.39
8.47 4.78


Substrate: on bark and underlying wood of unk. hardwood (birch?) in stream bed


Habitat: mixed hardwood conifer forest


Ecoregion: Eastern Forest-Boreal Transition (NA0406)


Collectors: D. Newman & P. Kaishian


Collection #: CLBS020


Collected for the 2016 SUNY-ESF Ecological Monitoring and Biodiversity Assessment (EFB 202) Mycology Section

also seen at:


https://www.facebook.com/groups/ascomycetes/permalink/1903330053252523/
http://mushroomobserver.org/248258


NOTE: I cannot shrink my images down to 150KB to be uploaded here. they may be viewed at either of the two above links.

Hans-Otto Baral, 26-10-2017 23:08
Hans-Otto Baral
Re : Phaeoheloitum sp.? - 248258
Water water!

I guess it is Phaeohelotium imberbe but I can hardly see anything under the mic.
Danny Newman, 27-10-2017 04:24
Danny Newman
Re : Phaeoheloitum sp.? - 248258
what if I only have dried material? should I just let it sit in water, or is it safe to rehydrate with KOH first and then make a water mount? or must the material be absolutely fresh and living?
Hans-Otto Baral, 27-10-2017 09:35
Hans-Otto Baral
Re : Phaeoheloitum sp.? - 248258
Only the latter is the option. KOH is toxic for any organism, you can try yourself. 

With drought-tolerant disocmycetes it is different, you can study them weeks and months later, but they grow exposed and are dry when it is sunny.
Danny Newman, 27-10-2017 15:49
Danny Newman
Re : Phaeoheloitum sp.? - 248258
It sounds like there is no use in saving/drying any Phaeohelotium, Bisporella, or any similar fungus whose key features are only visible when living.  What does that mean for herbarium collections?  What purpose do they serve for such groups of fungi?
Hans-Otto Baral, 27-10-2017 16:29
Hans-Otto Baral
Re : Phaeoheloitum sp.? - 248258
I am teaching this since 1992 (Mycotaxon 44: 333-390) and earlier. Of course, official herbaria do not like very much this message....

But you can see it this way: "vital charcaters", as I call them, are very valuable additional features and often even more valuable than what can be saved in a herbarium. But the taxonomy that we are doing based on morphology usually lacks aspects like cultural characters or DNA data which often give very unexpected insights in taxonomy. For instance, some species are collective species that can be divided only based on culture or sequencing. And herbarium material loses the latter option if older than 10-20 years and the former often within a few weeks....