Name: Morchella diminutiva
Authority: M. Kuo, Dewsbury, Moncalvo & S.L. Stephenson 2013
Vouchered by: Brad Bomanz
Date found: 4/25/2005
Collected by: Brad Bomanz
Voucher ID: 53
Confirming Mycologist: Dr. Andrew Methven

Latitude: 038.526 N
Longitude: 090.561 W
City: Eureka
County: St. Louis
State: Missouri
Site location: Tyson Research Center

Habitat: bottomland - forest
Moisture conditions: very moist
Substrate: wood - live

Reference document: n/a
ISBN No: n/a
Page no:n/a
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Spore length: 23 - 27 microns
Spore width: 14 - 15.5 microns
Spore color: clear
Spore texture: smooth
Spore shape: elliptical - without oil droplets
Spore print color: yellowish-tan
Chemical reaction: n/d

The following comments are taken from Mushrooms Demystified and adapted to this voucher reference. Morels are perplexingly polymorphic and resist our obtrusive attempts to categorize them. The name Morchella deliciosa has been applied to more than one kind of morel, and descriptions have been broadened to include a number of confusing and intergrading, small to medium-sized morel with white or pallid ridges at least when young and pits which are usually large and often vertically elongated. In age the pits and ridges often become the same color (yellowish-tan to brown), but the shape and size of the pits helps distinguish it from Morchella esculenta. The name Morchella conica has also been used for this species, but is more properly applied to morels with blackening ridges (see the Morchella angusticeps voucher # 35). Other species: Another "white morel" occurs in the Sierra Nevada and Cascades about the same time as the black morels. It has a whitish to buff cap that does not darken appreciably in age. The pits are usually elongated vertically but the ridges often form vertical lines as in the black morels. Close examination by Dr. Methven (see annotation above) combined with the 2015 DNA analysis confirmed that this specimen is Morchella diminutiva.

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