Observation 65690: Morchella diminutiva M.Kuo, Dewsbury, Moncalvo & S.L.Stephenson

When: 2011-04-17

Collection location: Bloomington, Indiana, USA [Click for map]

Who: Patrick Harvey (pg_harvey)

No specimen available

Species Lists



Proposed Names

18% (7)
Recognized by sight
21% (7)
Recognized by sight
59% (5)
Eye3 Eyes3
Recognized by sight: distribution inconsistency for M. virginiana according to Kuo et al. 2012: M. virginiana apparently is limited to association with L. tulipifera in riparian and upland ecosystems from Virginia to northern Mississippi (O’Donnell et al. 2011).
Used references: Kuo M., Dewsbury D.R., O’donnell K., Rehner S.A., Moore J.D., Moncalvo J., Canfield S.A., Carter M., Stephenson S.L., Methven A., & Volk T.J. “Taxonomic revision of true morels (Morchella) in Canada and the United States.” Mycologia 104.2 (2012): PDF.
-30% (2)
Recognized by sight: IF this morel corresponds to Kuo’s description of virginiana nom prov, this name is the validly published one.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Neither Morchella septentrionalis nor M. virginiana…
By: Dave W (Dave W)
2015-05-12 21:28:14 CDT (-0400)

is listed on Index Fungorum. Diminutiva and sceptriformis are each listed.

I find these morels formerly known as “deliciosa” in stands of tulip poplar, areas dominated by white ash, mixes of the two aformentioned tree types, and mixes of live apple and black cherry trees.

From what I’ve seen, very few of these “forest morels” here in the mid-Atlantic this year. I think the soil temperature struggled up to the critical level and then dropped off just when these little guys were ready to get going.

Actually both can be found under tulip trees
By: Terri Clements/Donna Fulton (pinonbistro)
2015-05-12 20:05:27 CDT (-0400)

so it doesn’t seem to help in the differentiation. Kuo says of M. diminutiva: “Features that distinguish Morchella diminutiva from other yellow morels include its small size; the sparse, vertical arrangement of the pits and ridges; the usually pointed cap; and the frequently long and skinny stem.” So that may shift the balance to M. diminutive.


M. sceptriformis
By: Terri Clements/Donna Fulton (pinonbistro)
2015-05-12 19:55:14 CDT (-0400)

specimens which were examined by Richards etal came from New Jersey so distribution doesn’t seem to be an issue here. They were found under tulips but according to Kuo they are …“possibly limited to association with tulip trees.” so I suppose if these were under tulips M. sceptriformis might be slightly more likely than M. diminutiva?


By: walt sturgeon (Mycowalt)
2015-05-12 17:56:03 CDT (-0400)

Were there tulip trees where you found these? Liriodendron tulipifera.

By: Terri Clements/Donna Fulton (pinonbistro)
2015-05-12 14:41:13 CDT (-0400)

Did you mean M. sceptriformis?


Created: 2011-04-17 22:52:13 CDT (-0400)
Last modified: 2017-04-26 23:53:32 CDT (-0400)
Viewed: 443 times, last viewed: 2018-08-06 22:27:39 CDT (-0400)
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