Morchella americana

Morchella americana is a species of fungus in the family Morchellaceae native to North America. Described as new to science in 2012, it is common east of the Rocky Mountains in a range stretching from Ontario south to Texas, Arkansas, Alabama, Georgia and South Carolina. In western North America, the species typically is found under hardwood, especially cottonwood trees in river bottoms, or with apple trees or ornamental ashes in urban settings. The specific epithet americana refers to its occurrence in North America.

Morchella americana
Scientific classification
Kingdom:
Fungi
Division:
Ascomycota
Class:
Pezizomycetes
Order:
Pezizales
Family:
Morchellaceae
Genus:
Morchella
Species:
M. americana
Binomial name
Morchella americana
Clowez & Matherly(2012)

In the Great Lakes region of eastern North America, the range of M. americana overlaps with M. cryptica, which cannot be reliably distinguished from M. americana without DNA sampling.[1]

M. americana, identified as phylogenetic species "Mes-4", has also been found in Turkey, France, and Germany, but is suspected of having been introduced there from North America.[2][3]

In 2014, Richard et al. clarified the taxonomic status of this species, retaining the name Morchella americana of Clowez and Matherly(2012) over M. esculentoides.[3][4]

References
  1. Kuo M, Dewsbury DR, O'Donnell K, Carter MC, Rehner SA, Moore JD, Moncalvo JM, Canfield SA, Stephenson SL, Methven AS, Volk TJ (11 April 2012). "Taxonomic revision of true morels (Morchella) in Canada and the United States". Mycologia. 104 (5): 1159–77. doi:10.3852/11-375. PMID 22495449. S2CID 45219627.
  2. Taşkın, H.; Büyükalaca, S.; Hansen, K. & O’Donnell, K. (March–April 2012). "Multilocus phylogenetics analysis of true morels (Morchella) reveals high levels of endemics in Turkey relative to other regions of Europe". Mycologia. 104 (2): 446–461. doi:10.3852/11-180. PMID 22123659. S2CID 207685509.
  3. Richard, Franck; Bellanger, Jean-Michel; Clowez, Philippe; Courtecuisse, Regis; Hansen, Karen; O'Donnell, Kerry; Sauve, Mathieu; Urban, Alexander; Moreau, Pierre-Arthur (30 December 2014). "True morels (Morchella, Pezizales) of Europe and North America: evolutionary relationships inferred from multilocus data and a unified taxonomy". Mycologia (Preliminary version published online). 107 (2): 359–382. doi:10.3852/14-166. PMID 25550303. 14-166.
  4. Clowez, Philippe (2012). "Les morilles. Une nouvelle approche mondiale du genre Morchella". Bull Soc Mycol Fr. 126: 199–376.


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