Observation 64815: Diderma cingulatum
When: 2011-03-25
Who: zaca
No herbarium specimen

Proposed Names

29% (1)
Eye3
Recognized by sight
54% (1)
Recognized by sight
81% (1)
Eyes3
Recognized by sight
28% (1)
Recognized by sight: Drawing in Ing; Spores match with Ing 8-11 µm
Used references: Ing, Bruce. 1999. The Myxomycetes of Britain And Ireland. The Richmond Pub. Co., Slough, England. 374p.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Despite the attempts I made,
By: zaca
2011-07-21 15:24:31 PDT (-0700)

I could not see anything that is like a capilllitium.

By: damon brunette (damonbrunette)
2011-07-21 13:39:09 PDT (-0700)

What was the peridium going to tell us? You are still able to scope capilitium, non?
Jstor never took an image of mine as hearsay…. maybe this got lost in translation.

Dear Damon,
By: zaca
2011-07-21 13:03:23 PDT (-0700)

I usually take some care in citing references. In this I cited “discoverlife” because the origin of the text is of “The Eumycetozoan Project”, which I consider reliable. I don’t know if you noticed, but the reference you cited "http://www.jstor.org/pss/3668407 ":http://www.jstor.org/pss/3668407 is just the first one apppearing in the link of discoverlife that I gave. So, what sources are reliable?
In the particular case of the specimen under consideration, I took a picture from the microscope to a peridium that I isolated from the rest, and I upload already a picture with it. Unfortunatelly, it was almost empty, since no material appeared after I crushed it. I think that the material is too dry by now.

Zaca, Darv
By: damon brunette (damonbrunette)
2011-07-19 18:29:18 PDT (-0700)

Discover life is not so reliable, and I can say this as they have taken pictures Ive posted on MO, ones that Ive named (somewhat) educated guesses, and stuck them on their site. No spore or capilitium measurements…ect..

This is almost certainly in what is referenced in the Diderma spumaroides globosum complex
http://www.jstor.org/pss/3668407
I have just found this for the first time this week, so dont know much about it myself.

But most importantly, its been my experience that you cannot judge the colors of the peridium, lime crystals, and in your case Zaca the fruiting body too heavily. They change and are in flux as far as development goes constantly. The life cycle can be cut short and preserved at many different points as well. Especially with two layers covering (the sporocysts on the lime encrusted hypothallus) I dont think it is easy to discern how “black” to capilltium can be. Though I think that in some instances you could note that it is not fruiting like the one named.
Which lead me to the reason I picked cingulatum… The occurance of the round shapes (not good on all the correct terminology) is not as clustered as some of the others mentioned. Pics on the Web (somewhat reliable) show this.

Just looking at images so far….

The old Iowa images website can tell alot by shape

http://slimemold.uark.edu/martin.htm#Tubifera

Specifically
http://slimemold.uark.edu/...

Ive not seen that book Darv. Is it worth ordering?

Thanks again, Darv.
By: zaca
2011-07-19 17:09:37 PDT (-0700)

Despite I have no access to the reference you mentioned I found the description and photos of D. spumarioides. I list some links at the end of this message.
In all the photos I saw of D. spumarioides the fruit body has some black material inside and the form of the fruit bodies is almost spheric. This does not happens with my specimen: the interior is a bit darker than the extirior, but far from black, and the form is like a “bell”(?) standing over a round calcareous base, at least at this stage. Even the original photos are different from those presented at the links below.

Links:
myxomycet, ambmuggia, jlcheype, funghiabruzzesi

Thanks, Damon and Darv,
By: zaca
2011-07-19 11:14:03 PDT (-0700)

for your contributions concerning this specimen.
As I still had the leaf where the slime mold lived, I took a picture of the actual state and observed the spores under the microscope. I have already uploaded new photos with the details.
It seems to me that the spores are a bit to short for Diderma cingulatum, at least by comparison with the values given in Discoverlife. I obtained the following values:
(8.8) 8.9 – 10.6 (11.6) x (7.1) 8.5 – 9.8 (10.7) µm
Q = 1 – 1.2 (1.5) ; N = 35
Me = 9.8 × 9.1 µm ; Qe = 1.1.
Moreover, the color of the fuit bodies of my specimens is different from the one given in the reference for D. cingulatum.

Good eye
By: damon brunette (damonbrunette)
2011-07-18 14:03:52 PDT (-0700)

I never notice these subtle nuances!

Convergent evolution
By: Darvin DeShazer (darv)
2011-07-18 12:39:42 PDT (-0700)

A slime mold that resembles a basidiomycete, Corticium minnsiae.
http://mushroomobserver.org/name/show_name/25557

Created: 2011-03-27 08:32:44 PDT (-0700)
Last modified: 2011-07-19 14:22:06 PDT (-0700)
Viewed: 302 times, last viewed: 2016-11-20 01:17:08 PST (-0800)
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