Observation 60208: Hypocreopsis P. Karst.

When: 2010-11-15

Collection location: Geneva, Switzerland [Click for map]

Who: Douglas Smith (douglas)

No specimen available

Found and id’ed but others at the SMG meeting.

Proposed Names

36% (4)
Recognized by sight
83% (1)
Recognized by sight: Definitely a Hypocreopsis based on the form and color. Adding this ID so the images can at least get out under the genus name.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Probably H. lichenoides
By: Katherine Grundy (Katherine.grundy)
2012-08-22 12:09:13 CEST (+0200)

Based on the distribution and ecology of the two species, I’d say highly likely to be Hypocreopsis lichenoides. Hypocreopsis rhododendri is (as far as we know) restricted to an oceanic climate: in Europe it has only been reported from western France, Ireland and the UK. Hypocreopsis lichenoides, by contrast, is found across Fenno-scandinavia, in Poland and in France.
As irenea said, the two species can be distinguished by their spores and it appears that they may also be distinguished by the species of Pseudochaete (nom. illeg.) with which they are found. Hypocreopsis lichenoides can also be distinguished if it has conidia (brown mealy patches on the surface of the lobe), as H. rhododendri isn’t known to produce conidia
If a specimen isn’t fertile or producing spores, it is still possible to identify it, by sequencing the ITS region. If someone still has a sample of your specimen and hasn’t been able to determine its ID based on spores (based on the photos it doesn’t look like the stromata had perithecia), I would be happy to sequence it for you.
Great photos!

P.S. I would be interested indeed to hear of any records of H. rhododendri from outside of the UK, Ireland and SW France: in particular I’d be interested in any post-1920 records (a small sample for DNA extraction would be even better) from North America.

beautiful pictures
By: Jason Karakehian (Jason Karakehian)
2011-01-05 18:13:19 CET (+0100)

Hi, I read about this in an article that Thaxter had published. There was a black and white photo of his specimen that I think he found in S. Carolina (?), United States and drawings of microscopic features by Thaxter. It was such a cool fungus and I am so pleased to see some great color pictures of it here. Great observation! Thank you! -Jason

Umm, yeah, not sure…
By: Douglas Smith (douglas)
2010-12-04 13:52:56 CET (+0100)

Really, I don’t know. I walked into the meeting, and some people were looking at these, and had 3-4 books open next to them, and they all seemed to be sure about the H. lichenoides id. They were the ones looking at the books, so I just went with what they had. I know one of the guys was going take these home, so maybe there is more info on the spores now. But nows the snows have come in, I’m not going to make the meeting for a bit…

Nice find!
By: Irene Andersson (irenea)
2010-12-04 10:36:05 CET (+0100)

In picture 124658, it looks like you have Hymenochaete corrugata, the grey crust to the right. That one is associated with Hypocreopsis rhododendri.

Hypocreopsis lichenoides is associated with Hymenochaete tabacina. Did you see any there?

These Hypocreopsis species can also be told apart by the spores if you find any.

Created: 2010-12-04 09:40:36 CET (+0100)
Last modified: 2013-07-13 16:38:12 CEST (+0200)
Viewed: 235 times, last viewed: 2017-06-08 13:14:19 CEST (+0200)
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