Accès membres

Mot de passe perdu? S'inscrire

28-07-2011 18:31

Alex Akulov Alex Akulov

Dear FriendsToday I made the pdf file of Velenovsk

26-03-2024 17:14

Juuso Äikäs

These little black ascos were growing on a dead, d

27-03-2024 22:53

Charles Aron Charles Aron

Hi All,Recently I came across these minute, setose

25-03-2024 13:41

B Shelbourne B Shelbourne

• Hyaloscyphaceae (no VBs), Hyaloscypha: Macro a

25-03-2024 21:27

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, March 2024

26-03-2024 14:37

DAVID MARCOS DAVID MARCOS

Spores (telles qu'elles apparaissent à l'intérie

24-03-2024 08:27

Thierry Blondelle Thierry Blondelle

HiOn Hedera helix fallen branchEcological habitat:

26-03-2024 11:06

michel bertrand

Bonjour, Malgré de nombreuses recherches, je n'a

25-03-2024 14:08

Ursula Kozik

Bonjour et bonne journée, On m'a envoyé une tro

25-03-2024 03:56

B Shelbourne B Shelbourne

• Scuttelinia: Macro and habitat.• S. scutella

« < 1 2 3 4 5 > »
Cyathicula starbaeckii?
Harald Homa, 27-07-2022 17:08
Harald HomaHello dear friends of mushroom,
on 11.06.2022 I found the following fruiting bodies. I suspect it is Cyathicula starbaeckii, but I have not found a key and hardly any monographs, so I would like to ask here in the forum who can help me.

Fruiting body cup-shaped, long-stalked, on previous year's stem of Cirsium; young the stem is almost transparent; with age the fb turns completely to ochre with olive tinge; fruiting layer discoloured reddish brown in Baral's solution (dextrinoid?).


Margin with short hairs stuck together to form denticles, cream-coloured; marginal hairs in terminal phalanx with strongly light-refracting content; often discoloured (red)brown;
34.5x3.3 - 43.0x3.3


Paraphyses filamentous, (cylilndric), forked basally, terminal cell narrower below, thus slightly clubbed, with yellow, strongly light-refracting contents (apparently granulated), turning reddish brown like the apical cells of the hairs);
59.9x2.2-2.5 - 54.2x2.0


Asci 8-spored, clavate, J bb; hooks +
46.3x4.1 - 48.3x3.8 - 51.1x4.3


Spores long-ellipsoid to spindle-shaped, smooth, hyaline, with single, small to medium LB's, often oriented at the poles, slightly curved or kinked; , OCI=1
9.0-11.8 x 1.8-2.5 µm; MW(10): 10.7 x 2.1 µm



With kind regards


Harald

  • message #73511
  • message #73511
  • message #73511
  • message #73511
  • message #73511
  • message #73511
  • message #73511
Michel Hairaud, 27-07-2022 17:32
Michel Hairaud
Re : Cyathicula starbaeckii?
Hi Harald, I'm sending to you the illustrated key by Carpenter on Crocicreas . (Including C. starbeackii) 
Amitiés Michel
Harald Homa, 27-07-2022 18:41
Harald Homa
Re : Cyathicula starbaeckii?
Hello Michel,

thank you for the drawings and the key from Carpenter.
After the first look at the drawings, starbaeckii probably does not apply, as I did not find any crystals on the outside of the cup. In addition, the outer surface is covered with numerous coiled hairs, as you can see in the pictures. This is more like C. tomentosa, which would also fit the reddish-brown colouration of the marginal hairs.


Many thanks and best regards


Harald


 

Hans-Otto Baral, 27-07-2022 20:51
Hans-Otto Baral
Re : Cyathicula starbaeckii?
Hmm, this undulating outer hyphal layer is typical also of C. cyathoidea agg., I would look there. It is a mess of unclear species, probably much more than separated by Carpenter, but I know nobody who has the necessary knowledge. The genus requires a new approach by vital tzaxonomy and ITS rDNA.
Harald Homa, 28-07-2022 20:45
Harald Homa
Re : Cyathicula starbaeckii?
Hallo Zotto

Thank you for the information and the tip, it will take some time until I have worked out the comparisons. If I come to a plausible result, I will contact you.


Thank you and best regards


Harald

Harald Homa, 30-07-2022 12:25
Harald Homa
Re : Cyathicula starbaeckii?
Hello Zotto,
I found what I was looking for in Carpenter's key: the finding shown above corresponds to Crocicreas cyathoideum var. pteridicola (according to IF currently Cyathicula cyathoidea). So the tip is right on the mark - thank you very much.
The sticking point in the identification were the "hairs" or "free hyphal ends",
which are clearly visible under the microscope, but macroscopically do not lead to a felt-like appearance. They are filled with numerous golden yellow drops. Exactly this hint is in the key but is not found either in the monograph or in the drawing.

At the same time I worked on a second find, which grew on previous year's stems of Dryopteris carthusiana. Enclosed are the data and some pictures.
According to Carpenter's key it should be Crocicreas cyathoideum var. cyathoideum. In the IF, however, no actual name is given, which irritates me a bit.
But here are the facts:


Cup-shaped, stemmed fruiting bodies with almost closed margins; stem base dark brown, fading to ochre with an olive tone towards the top. The hairs on the excipulum and on the rim are white and slightly protruding in small clusters.
Diameter of FB: 123 - 225 µm, height: 229/171/185 µm
Asci clavate, crozier -, J bb, 8-spored, immature locally dextrinoid 42.8x7.1 u 45.3x6.1


Spores ellipsoid to slightly club-shaped, hyaline, unseptate, with several larger and some small LB´s (ochre to brownish); OCI: 2-3; size:10.6-13.3 x 2.1-3.0 µm, MW(8):12.0 x 2.5 µm


Paraphyses filamentous with numerous small LB´s; apically not dilated, only a few septa visible; 51.7x1.4-1.5


Marginal hairs or hyphae cylindrical, straight to slightly curved, some apically weakly flared, either very thick-walled or with light yellow-grey contents, hardly septate. 31.6x2.6 u 40.6x2.8 u 49.8x2.3


With kind regards


Harald

  • message #73550
  • message #73550
  • message #73550
  • message #73550
  • message #73550
  • message #73550
  • message #73550
  • message #73550
Hans-Otto Baral, 30-07-2022 16:59
Hans-Otto Baral
Re : Cyathicula starbaeckii?
Hi Harald

I appreciate your enthusiasm but I must argue that it is not as easy. First i was astonished that you identify a sample on Cirsium as var. pteridicola and one on a fern as var. cyathoidea. Some comments:

The droplets (VBs) in the "hairs"/cortical excipular cells of Cyathicula are also abundantly in the paraphyses, but you must take care that the cells are alive. If so, they are hyaline, but with age they get oxidated and turn brownish-yellow, I assume this is what you are reporting. In dead cells you will not see them anymore, and your photos partly show dead paraphyses.

I did not check the key but I doubt a bit if it works right that way. As I said, C. cyathoidea is a dubious complex which is difficult to apporach by morphology. When trying this, one problem with Carpenter's key is that he does not take care of croziers which are certainly helpful in that genus as in many other genera. Also one must carefully distinguish between measurements of living and dead cells when usein a key.

Your find on a fern surely lacks the mentioned VBs. It is not a Cyathicula at all but belons in Urceolella, probably U. carestiana. The glassy hairs are very characteristic. If they have a fine lumen till the apex then there are other species possible, maybe U. winteriana.
Harald Homa, 01-08-2022 11:16
Harald Homa
Re : Cyathicula starbaeckii?
Hello Zotto,
I hope I have made some progress in the meantime.
The following about the handling of substrates in the finds mentioned:
Index fungorum synonymises all varieties of Crocicreas cyathoideum under Cyathicula cyathoidea - how should I then differentiate?

Regarding the finding "C. starbeckii?" I have in the meantime done further research and found the documentation for Cyathicula cyathoidea on Ingo's site. This clarifies my question about the hyphal ends with the VBs, which first become colourless, then golden yellow and later brown (according to your hint!).
Regarding Carpenter's key, it should be noted that he places Crocicreas cyathoideum var. cyathoideum in the section under line 37*:
"37*. Apothecia usually on other substrates, occasionally on fern;"
But the hairs with the VB's were only under line 37, i.e. for Crocicreas cyathoidum var. pteridicola.
After all these hurdles I end up with Cyathicula cyathoidea in the sense of Crocicreas cyathoidea var. cyathoidea:
I have learned a lot and thank you very much for the info and patience!


Many greetings
Harald


p.s. Urceolella carestiana has been active in matching with the rest of my pictures!