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09-04-2026 15:25

Jac Gelderblom

On bare soil between mosses Ifound an asco I deter

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Thomas Læssøe

https://svampe.databasen.org/observations/10589176

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Thomas Læssøe

https://svampe.databasen.org/observations/10587061

08-04-2026 20:33

Vasileios Kaounas Vasileios Kaounas

Found 07-04-26, in Abies cephalonica. Diameter 1,

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FRANCIS FOUCHIER

Bonjour , je recherche en pdf cet article: KORF R

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David Chapados David Chapados

Hi! Could someone help me identifying this specim

29-06-2016 15:18

Per Vetlesen

HiIt was found on the bark of a dead branch of Jun

07-01-2018 22:47

Per Vetlesen

Grown in moist chamber on bark/resin of fallen Pin

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Viktorie Halasu Viktorie Halasu

Hello, could anyone please send me the article wi

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David Gibbs David Gibbs

Help with this one much appreciated, on rotting Fa

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Paraphyses IKI reaction in Scutellinia
Perz Piotr, 03-02-2007 23:10
Hi,

I have question about paraphyses IKI reaction in genus Scutellinia. Sometimes paraphyses stain in IKI green - it means they have carotenoids. Sometimes there is no IKI reaction - also paraphyses does not contains carotenoids.

How is the name for violet-lila reaction? Here paraphyses of Scutellinia pseudotrechispora (Schröt.) Le Gal in IKI

  • message #1406
NC NC, 04-02-2007 10:10
Re:Paraphyses IKI reaction in Scutellinia
Bonjour,
J'ai déjà observé cette réaction violette avec le Lugol par exemple avec Scutellinia crucipila. Je pense que la réaction (carotene à l'extrémité des paraphyses)en vert foncé (vert-bouteille) s'arrete par manque de concentration en iode (??) et le mélange orange + vert foncé donne cette couleur lilas. Dans ton cas une préparation sans eau, seulement avec IKI donne t-elle toujours du violet?
Amicalement
Robert
Hans-Otto Baral, 04-02-2007 11:54
Hans-Otto Baral
Re:Paraphyses IKI reaction in Scutellinia
I have actually observed the same in "Scutellinia sp." (see my paper on Lugol versus Melzer, mycotaxon 29: 428, 1987): when adding IKI (Lugol) to a water mount, the colour reaction of the paraphyses changes from greyish-violet to grey.olive or grey-brown. The violet reaction is seen at an iodine concentration of 0.05-0.1% while the olive appears at 0.1-0.2 % and higher. So the colour is concentration-dependent similar as in the hemiamyloid apical rings. But contrary to hemiamyloidity, the violet and olive are also seen when KOH-pretreated, and I believe also in Melzer.

Zotto
Perz Piotr, 11-02-2007 09:00
Re:Paraphyses IKI reaction in Scutellinia
Thanks a lot, Robert & Zotto!