Observation 137431: Scleroderma citrinum Pers.
When: 2013-06-23
Collection location: Braga, Portugal [Click for map]
No herbarium specimen

Proposed Names

-30% (2)
Recognized by sight
47% (2)
Recognized by sight
61% (2)
Eye3 Eyes3
Recognized by sight
28% (2)
Used references: Kuo’s Scleroderma Key in MushroomExpert.com

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
RE: S. citrinum
By: Daniel B. Wheeler (Tuberale)
2013-07-30 17:35:32 PDT (-0700)

Your comment about the skin in Kuo kind of negates this from being S. citrinum.

“…the “skin” whitish when sliced but blushing pinkish…”

Also, this appears to have at least a partial pseudo-stem in cross-section. See the portion of the cut Scleroderma with purple gleba, that has a flattish extension from the peridium into the gleba? That is part of a pseudo-stem. Because of the way the fungus grows, half the pseudo-stem often breaks off in handling or picking the sporocarp, along with any basal rhizomorphs. The pseudo-stipe is quite visible in the immature specimen.

And, perhaps most telling, where is the yellow surface from which the citrinum comes from? I would expect the more mature specimen to be more yellow or yellow-brown.

Elsa, from Kuo’s key:
By: Daniel B. Wheeler (Tuberale)
2013-07-30 17:06:25 PDT (-0700)

“Surface yellowish, covered with prominent, separated scales, dark reddish with KOH; without a pseudo-stem; growing in woods (often in mossy areas) or on well rotted wood east of the Rocky Mountains (more rare in the West and in Mexico); spores B/C, 11-14 µ.”

Well, about Scleroderma citrinum
By: Elsa (pinknailsgirl)
2013-07-30 15:56:51 PDT (-0700)

what I read from his site is:

“Fruiting Body: 2-10 cm across; round or flattened; the surface hard and scaly, yellowish to yellow-brown, often cracked; the “skin” whitish when sliced but blushing pinkish; sometimes gathered at the base, where mycelial strands may be found.

Spore Mass: Thick and white at first, becoming purple to purple-black from the center outwards; eventually blackish to brownish and dust-like."

That’s what I see.

By definition in Kuo
By: Daniel B. Wheeler (Tuberale)
2013-07-30 14:16:19 PDT (-0700)

Scleroderma citrinum needs warts. The warts extend 2-3mm above the peridium.

The spores are not so clear-cut. S. cepa can also have dark purple-black spores, but never has warts.

By: Elsa (pinknailsgirl)
2013-07-30 12:18:27 PDT (-0700)

My idea about S. areolatum is like obs. http://mushroomobserver.org/122796?q=1Ot8K
I think that those scales and colour and the lack of stem, and the dark black spores leads to S. citrinum. What do you say?

By: Danny Newman (myxomop)
2013-06-23 19:46:54 PDT (-0700)

what color was the inside?

Created: 2013-06-23 16:44:48 PDT (-0700)
Last modified: 2013-07-30 12:26:47 PDT (-0700)
Viewed: 76 times, last viewed: 2017-06-16 01:43:31 PDT (-0700)
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