Observation 262677: Coccomyces dentatus (J.C. Schmidt & Kunze) Sacc.

When: 2016-11-27

Collection location: Planalto das Cezaredas, Portugal [Click for map]

Who: zaca

No specimen available

An oak leaf with a curious pattern.
I have the feeling that I saw something similar recently, maybe here at MO. Anyone recognizes it?


Quercus leaf.
Some close ups showing pyramidal ascomata.
Microscopy: Section;
Microscopy: Asci;
Microscopy: Asci and spores.

Proposed Names

87% (1)
Eye3 Eyes3
Recognized by sight: Details to be included in a forthcoming comment.
Based on microscopic features

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Microscopy added.
By: zaca
2016-11-29 03:00:57 PST (-0800)
I also recommend a look to
By: zaca
2016-11-28 07:44:06 PST (-0800)

with good photos and microscopy.

Richard Droker observation revisited:
By: zaca
2016-11-28 07:40:57 PST (-0800)

Yesterday I was not able to recall where I have seen a similar infected leaf. I started to make a quick preparation to observe under the scope and saw the asci with fusiform and septate spores inside. Then i move to AscoFrance and search for similar observations. After sometime I saw the one at
including a pdf file with similar microscopy:
With the name of the species – Coccomyces dentatus – I was able to rediscover the beautifull observation by Richard Droker that I mentioned in my previous message.

See …
By: zaca
2016-11-28 07:24:41 PST (-0800)

Created: 2016-11-27 14:31:17 PST (-0800)
Last modified: 2016-11-30 03:35:33 PST (-0800)
Viewed: 74 times, last viewed: 2017-07-08 01:31:08 PDT (-0700)
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