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Cramp Balls - Daldinia concentrica Irregularly shaped fungus. Its surface was brown and powdery. When I pulled it off the wood, black liquid oozed out. The inside was wet and black with concentric, solid zones and felt similar to charcoal. <br />
<br />
Habitat: Spotted on birch in a deciduous forest.<br />
<br />
Fun facts:<br />
<br />
 #1 - The common name &quot;cramp ball&quot; refers to the old folk belief that carrying one around in your armpit would cure cramps!<br />
<br />
#2 - It is also known in Britain as &quot;King Alfred&#039;s cakes&quot;. King Alfred was fleeing a battle when he took refuge in an old woman&#039;s house. The old woman, not knowing he was the king, left Alfred in charge of watching some cakes in the oven. He didn&#039;t know how to cook, fell asleep, and the cakes burned. So, this fungus gained this common name since it resembles burnt cakes.<br />
<figure class="photo"><a href="https://www.jungledragon.com/image/66605/cramp_balls_-_daldinia_concentrica.html" title="Cramp Balls - Daldinia concentrica"><img src="https://s3.amazonaws.com/media.jungledragon.com/images/3232/66605_thumb.jpg?AWSAccessKeyId=05GMT0V3GWVNE7GGM1R2&Expires=1763596810&Signature=bgwzs1GqSFVFrFZn2VRzmkzZV4A%3D" width="200" height="166" alt="Cramp Balls - Daldinia concentrica <br />
Irregularly shaped fungus. Its surface was brown and powdery. When I pulled it off the wood, black liquid oozed out. The inside was wet and black with concentric, solid zones and felt similar to charcoal. <br />
<br />
Habitat: Spotted on birch in a deciduous forest.<br />
<br />
Fun facts:<br />
<br />
#1 - The common name &quot;cramp ball&quot; refers to the old folk belief that carrying one around in your armpit would cure cramps!<br />
<br />
#2 - It is also known in Britain as &quot;King Alfred&#039;s cakes&quot;. King Alfred was fleeing a battle when he took refuge in an old woman&#039;s house. The old woman, not knowing he was the king, left Alfred in charge of watching some cakes in the oven. He didn&#039;t know how to cook, fell asleep, and the cakes burned. So, this fungus gained this common name since it resembles burnt cakes.<br />
https://www.jungledragon.com/image/66604/cramp_balls_-_daldinia_concentrica.html Daldinia concentrica,Geotagged,King Alfred&#039;s Cake,Summer,United States,cramp balls,crampballs,fungus,mushroom" /></a></figure> Daldinia concentrica,Geotagged,King Alfred's Cake,Summer,United States,coal fungus,cramp balls,crampball,fungus,mushroom Click/tap to enlarge Promoted

Cramp Balls - Daldinia concentrica

Irregularly shaped fungus. Its surface was brown and powdery. When I pulled it off the wood, black liquid oozed out. The inside was wet and black with concentric, solid zones and felt similar to charcoal.

Habitat: Spotted on birch in a deciduous forest.

Fun facts:

#1 - The common name "cramp ball" refers to the old folk belief that carrying one around in your armpit would cure cramps!

#2 - It is also known in Britain as "King Alfred's cakes". King Alfred was fleeing a battle when he took refuge in an old woman's house. The old woman, not knowing he was the king, left Alfred in charge of watching some cakes in the oven. He didn't know how to cook, fell asleep, and the cakes burned. So, this fungus gained this common name since it resembles burnt cakes.

Cramp Balls - Daldinia concentrica <br />
Irregularly shaped fungus. Its surface was brown and powdery. When I pulled it off the wood, black liquid oozed out. The inside was wet and black with concentric, solid zones and felt similar to charcoal. <br />
<br />
Habitat: Spotted on birch in a deciduous forest.<br />
<br />
Fun facts:<br />
<br />
#1 - The common name "cramp ball" refers to the old folk belief that carrying one around in your armpit would cure cramps!<br />
<br />
#2 - It is also known in Britain as "King Alfred's cakes". King Alfred was fleeing a battle when he took refuge in an old woman's house. The old woman, not knowing he was the king, left Alfred in charge of watching some cakes in the oven. He didn't know how to cook, fell asleep, and the cakes burned. So, this fungus gained this common name since it resembles burnt cakes.<br />
https://www.jungledragon.com/image/66604/cramp_balls_-_daldinia_concentrica.html Daldinia concentrica,Geotagged,King Alfred's Cake,Summer,United States,cramp balls,crampballs,fungus,mushroom

    comments (9)

  1. Great shot and awesome fun facts! Posted 7 years ago
    1. Thanks! Posted 7 years ago
  2. I've been looking up Daldinia info, and I've realized that there are multiple species that we should keep an eye out for. I don't believe this one matches up with D. concentrica? I think I've narrowed it down to these with just a few features (the gelatinous interior and lack of stromatal scales pointed me away from D. concentrica):
    -D. bakeri C. G. Lloyd
    -D. fissa C. G. Lloyd
    -D. gelatinosa Y.-M. Ju, J. D. Rogers, & San Martín
    -D. macrospora San Martín, Y.-M. Ju, & J. D. Rogers
    -D. mexicana San Martín, Y.-M. Ju, & J. D. Rogers
    There is still limited info out there, but this is a Daldinia key I've been playing around with:
    http://mycology.sinica.edu.tw/xylariaceae/key.asp?qrySectionName=Daldinia

    Let me know what you think!
    Posted 4 years ago, modified 4 years ago
    1. Thanks for the info! I'll share this on iNat to see if anyone can confirm. I had it on MO and got Daldinia concentrica as the ID, but with low confidence. Posted 4 years ago
      1. I'm not entirely sure that will help (posting on iNaturalist). Most people identify them exactly as you have, but the keys and research articles I'm reading separate them by the characteristics in that link above.

        I guess I'm saying I'm not discouraging you from leaving it at this ID because it is not a well-researched area. I was just nerding out and found this all out today. haha
        Posted 4 years ago, modified 4 years ago
        1. Well, shoot. I just shared it there. Oh -- you could post the above info on my post to get people thinking... Posted 4 years ago
          1. I tagged you... Posted 4 years ago
            1. No problem at all! I tagged some people in hopes they will know something. There seem to be 6 species listed for N. America on inaturalist. I haven't looked elsewhere yet. Sorry if I sucked you down one of my scientific "rabbitholes" lol Posted 4 years ago
              1. Cool, thanks! And, no need to apologize! I love your "rabbit holes" and always support getting an ID correct <3. Posted 4 years ago

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The inedible fungus ''Daldinia concentrica'' is known by several common names, including King Alfred's Cake, cramp balls, and coal fungus. It can be found in North America, South America and Europe, where it lives on dead and decaying wood, especially on felled ash trees. It is a common, widespread saprotroph.

The fungus is ball-shaped, with a hard, friable, shiny black fruiting body 2 to 7 centimeters wide. It resembles a chunk of coal, which gives it several of its common names, including.. more

Similar species: Xylariales
Species identified by Christine Young
View Christine Young's profile

By Christine Young

All rights reserved
Uploaded Sep 20, 2018. Captured Sep 19, 2018 11:11 in RD RTE 202, 067760000, 16 Park Ln E, New Milford, CT 06776, United States.
  • Canon EOS 80D
  • f/4.0
  • 1/64s
  • ISO400
  • 100mm