Observation 104651: Scleroderma Pers.
When: 2012-08-10
No herbarium specimen

Proposed Names

27% (1)
Eye3
Recognized by sight
77% (2)
Eyes3
Recognized by sight
56% (1)
Used references: Arora, Mushrooms Demystified; plus obs. on MO. At another obs. here on MO, an immature collection shows both much thicker and thinner peridium.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Scleroderma cepa unlikely.
By: Daniel B. Wheeler (Tuberale)
2012-08-11 21:14:11 PDT (-0700)

S. cepa peridium stains/bruises red or pink when sliced. I don’t see that here. But it could still be one of the S. cepa group, which was why I gave all those other possibilities.

I think with what is now known, this obs. is either S. flavidum (with a peridium that doesn’t stain pink) or S. michiganense. S. michiganense seems a particularly viable option, considering it is usually associated with hardwoods. I have not had any experience with either species.

My experience with Sclerodermas is that they readily form mycorrhizal association with Eastern Red oak (Quercus palustra), which is especially common in my neighborhood as an ornamental shade tree. Usually I find S. cepa that has a peridium that turns pink to reddish immediately upon slicing. But I also find S. laeve often. And I’ve cultivated both S. laeve, S. cepa and S. areolatum with a Quercus palustra right outside my window. I still have sporocarps which have been protected from the elements under my house, even though they are several years old.

As you say this obs. was found with oak, cherry, maple and beech; I’m going to suggest S. michiganense, after I search for MO obs. of that species. Maybe there’s something in other observations of S. michiganense I’ve not heard of.

;
By: Leighton Bankes (paducahovoids)
2012-08-11 19:44:16 PDT (-0700)

http://mushroomobserver.org/104255?q=W7dt scleroderma cepa, yep, you. Whahttp://mushroomobserver.org/104255?q=W7dt did I say?edit; oops I said pila,:(… I thoughht I said cepa. Many hardwoods around, certainly oak, prob. cherry maple and beech all within 20 feet. I’m not disagreeing with you, I agree, much more info is needed to get to species, I was just trying to provide some

I think you meant
By: Daniel B. Wheeler (Tuberale)
2012-08-11 17:04:33 PDT (-0700)

you have a Scleroderma bovista observation? I checked, you don’t. At least here on MO. But I did find a good example (my opinion) of S. bovista if you are interested:
http://mushroomobserver.org/73721?q=W8jh

If this specimen was 2"+ in diameter, it has a peridium 5-8mm thick. Not as thick as some, but thicker than the really thin-skinned varieties like S. bovista. That thick mat of rhizomorpha anchoring the sporocarp may not detach easily, but might easily be kicked away by an animal. Spore dispersal can be done so many ways other than wind and animal ingestion alone.

So … what might it be? According to Arora’s Scleroderma key in Mushrooms Demystified, p. 707-708, your specimen is relatively large, bringing us to option 4. There is no long stalk here, taking us to 5. No noticeable rosette-like scales either, taking us to couplet 6. The peridium is thicker than 2mm, taking us to couplet 7. And here, we need accurate microscopy to go further. Your obs. is either in the S. cepa group or S. bovista and others. S. cepa in my experience has MUCH thicker peridium than 5-8mm, so we are still with S. bovista and others, but still discussed under S. cepa. S. flavidum seems possible, as the peridium of S. flavidum doesn’t stain/bruise pink. S. albidum has spores 12-17 microns across. S. reae favors arid habitats, unlikely in Ohio me thinks. S. floridanum is tropical to subtropical (but I suggested a collection was this recently in Germany!). S. fuscum favors conifer hosts. S. hypogaeum is typically underground (aka hypogeous). S. michiganense favors hardwoods.

Herein lies another problem only the observer can solve. Scleroderma are almost always mycorrhizal fungi, meaning they require a host tree or shrub to survive. Do you remember any nearby trees or shrubs near this observation?

thanks for
By: Leighton Bankes (paducahovoids)
2012-08-11 15:35:08 PDT (-0700)

the comment. I have a S. pila observation, you may have identified it :) it was only 3/4" in diameter, these were 2"+ in diameter, also note the prolific rhizos at the base, I don’t think these were going to blow anywhere :)

For certain, it is Scleroderma.
By: Daniel B. Wheeler (Tuberale)
2012-08-11 10:35:46 PDT (-0700)

Mycologists (and sometimes me) tend to be cautious creatures. Determination to species requires more data than is given here, Leighton.

S. bovista is very close to Bovista pila, but with lilac- to purplish- gleba. More importantly, S. bovista peridium (outer shell) should be paper thin. This obs. may have a paper thin peridium. But there is nothing that states that.

Also no microscopy to prove one species or another.

The background of the photos are subject to interpretation: are those twigs or branches? There is no easily-reference common-sized object in the photo, such as a coin. What width/height are the sporocarps? Without that data calling a species is difficult, if not impossible. That’s why comments on the observation are so important.

I would question Scleroderma bovista because of the basal attachment. Like Bovista pila, Scleroderma bovista can easily separate from its base and become wind-born, rolling around the place, spreading spores wherever it lands. Base here looks to solid. But that too is just opinion. Facts are much more convincing, don’t you think?

don’t
By: Leighton Bankes (paducahovoids)
2012-08-10 19:31:31 PDT (-0700)

like it for scleroderma bovista? right habitat, color, size, and season

Created: 2012-08-10 14:46:48 PDT (-0700)
Last modified: 2012-08-11 21:17:43 PDT (-0700)
Viewed: 85 times, last viewed: 2016-10-27 20:10:04 PDT (-0700)
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