Observation 91469: Morchella Dill. ex Pers.

When: 2012-04-01

Collection location: Luzerne Co., Pennsylvania, USA [Click for map]

Who: Dave W (Dave W)

No specimen available

As I understand it, some DNA research shows that these small gray/yellow morels (called variously “deliciosa” or “tulip morel”) belong to a species which one may call “esculenta group.” Now please… I’m not trying to start an argument here. I’m just interested in discussing the possibility that one morchella species may produce two macro – distinct forms.

I find these small types in live (healthy) forests… White Ash, Yellow Poplar (Tulip Poplar), Apple, Black Cherry. The larger ones which some people refer to as “esculenta” are more common around dying apple trees or recently dead elm. I think maybe the morchella fungus produces the larger fruit bodies in response to “knowing” that it’s host tree(s) are dying or have died… all the energy reserves devoted to reproduction, hence the large version.

Actually, these look a bit like miniature “esculentas”, with somewhat more numerous pits than some of the other small forest grays/yellows that I find.

This is my earliest seasonal date for finding any of the gray/yellow morels, by over two weeks. Nearby White Ash.



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close but not exactly right
By: Tom Volk (TomVolk)
2012-04-19 20:31:08 CDT (-0400)

M esculentoides is widely distributed east of the great plains (also in the west)/. M. cryptica seems to be restricted to areas in the north around the great lakes. how far from the lakes is a question that needs more research. So not everything in the east— and I suppose it depends what you call the east. More than 200 specimens of Morchella were sequenced for this study, but still more research needs to be done. This is just the starting point, but nonetheless is still a significant jump in Morchella systematics and identification.

anything in eastern NA
By: Danny Newman (myxomop)
2012-04-19 20:12:00 CDT (-0400)

suspected of being M. esculentoides is a candidate for being M. cryptica and vice versa. they are virtually indistinguishable.

Maybe these are a candidate for
By: Dave W (Dave W)
2012-04-19 19:59:23 CDT (-0400)

M. cryptica. Habitat matches, and the ridges are flattened.

In the past I have found
By: Dave W (Dave W)
2012-04-18 23:01:54 CDT (-0400)

what I consider to be esculentoides in this same area, nearby White Ash and/or Tulip Poplar. The ones seen in this obs are quite small, but this may be partly due to the very dry conditions that have prevailed. April 1 seems exceedingly early for esculentoides around here. Usually I find a few of the small deliciosa types about a week before the esculentoides appears.

look at the supplementary materials
By: Tom Volk (TomVolk)
2012-04-18 18:43:57 CDT (-0400)

There is a chart in the supplementary materials from the paper (also online)about locations where all the “Specimens examined” were found. That may help. These look to me like young M. esculentoides, without knowing much else about them. The pits look way too small (relatively) compared to the two smaller species.

I wonder,
By: Danny Newman (myxomop)
2012-04-15 23:29:49 CDT (-0400)

how to put names on deliciosoid morels larger than M. diminutiva but outside of M. virginiana’s reported distribution? Kuo et al. 2012 doesn’t give any options outside of those two. M. deliciosa group might be in order… Then again, some molecular work might show M. virginiana´s range to be a bit larger than recently published

Note the
By: Dave W (Dave W)
2012-04-15 19:57:41 CDT (-0400)

flattened ridge surfaces on these young specimens.

Found one week eralier than obs 92161, but in the exact same location (patch).


Created: 2012-04-01 16:26:17 CDT (-0400)
Last modified: 2012-04-15 23:26:46 CDT (-0400)
Viewed: 332 times, last viewed: 2017-06-12 21:30:31 CDT (-0400)
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