Permis de recherche scientifique Parc National d'Oka ;

PN0 2023-005

Morchella cf. americana
CG3000.
Érablière à ormes morts, présence de Sumac vinaigrier, à l'ombre.
Période de sécheresse.
Apothécie 4-8 cm de hauteur, 4-5 cm de diam. ovoïde àconique-tronqué, adnée au point d’attache au pied
Hyménophore à alvéoles allongés, irrégulier, jaune brunâtre pâle, côtes applaties pâlissantes.
Surface interne pubescente, blanchâtre.
Pied creux, 4-6 cm de hauteur; 1,5 cm de diam., lisse, égal.
Contexte 1-2 mm épaisseur.
Asques cylindriques, ? distinctement fourchus à la base ? (à revoir) à 8 spores, hyalines, 18-25 µm diam.
Paraphyses cylindriques, subclavés, septées, hyalines.
Spores ellipsoïdes, lisses, à contenu homogène, M; surtout 20 x 11 µm
M. ulmaria est différenciable de M. americana par ses asques fourchus à la base.

https://www.mycoquebec.org/bas.php?post=morchella&l=r&nom=Morchella%20americana%20/%20Morille%20d%27Am%C3%A9rique&tag=Morchella%20americana&gro=86

Collection CG3116, même endroit, séquencé par J.Bérubé juin 2024 = Morchella ulmariaAGAGAGAGAGCCTACCACGATGGATGAcgCCCtCAAATTGGCGGGTTCCACACCACGGTGTCGGTCCGGGGCGGGCCGGCCAGCGCAGCCTCATCCGAGAAACTCCCGAGAAAGCCCCTTTCAGTGGGGCGGGGGCCGGATCATGCAATCAATGCTCTGCATCCACCCGCACGGTTGGGTGAGTGTGCAGAGTAGGCTATTGCGGCTAAAGGAGGCTGTCTGGCAGAGGGCGGACGATGCATGCAGGCTCCGAAGGGAGCCAACCATGTCTTGATTCCCCTGGGGCCGGGGGGGTTAAAATATCCCCGGCAACACGCATGAACGGACGGCGTGGACCATCGATGGGGCTGGCATCCTCTCGCCATTGTCCCAACCAAAACCCTCTGTGTACCCTTTCCCTGTTGCTTCCCCCGGGGGACTGGCTCCGGCCAGCCGGGGGGAGAAACCAAGCAAAAACCCTTTTCGCAAAAACAGACGTCTGAATGTTAAAAACAAAAAAAGTTAAAACTTTCAACAACGGATCTCTTGGTTCCCACATCGATGAAGAACGCAGCGAAATGCGATAAGTAATGTGAATTGCAGAATTCAGTGAATCATCGAATCTTTGAACGCACATTGCGCCCTCTGGTATTCCGGAGGGCATGCCTGTTCGAGCGTCATAAATACCGCTCCTCCTCGGATTGCTTGCGATCCCTGGGGGGTTTTGGCAATGTGGTCTCCCCGTGCTTTGAGGGCATGCGAACGGGCTCCCAGTGCTGAAAGACATAACGTTCCCGGCCGAAACCGGTGGTTAATTTCACCGGCAGGATTCGAGGCAGGCAGACTGGAGGGCGTCATTACGTGGAGTCATGAGGATAGAAACCTCCCCCTTTGCAAGTTATGTTATTGAACATTGTTGCTCTGGCAGTTAGATCTGCAGGCCTGCCGGCCTGGGGATGGACCTCCCACTCGCAGGCGTCACGGCCACGATAGC

Growing on hardwood leaf fragments near Acer sp., Cercis canadensis, Liquidambar styraciflua, Lonicera sp. Basidiocarps white, flexuose with slightly inflated heads and 0.5 to 2.3 mm tal and 0.1 mm to 0.2 mm wide at the widest. Growing caespitose from light brown sclerotia. Rhomboid crystals abundant in the hymenium. Clamps absent in the stipe trama. Lamellar cystidia absent. Basidia clavate. Failed to locate mature basidia. Spores inamyloid, hyaline, smooth and thin-walled. Spore measurements: (5.6) 6.3 – 8.3 (8.9) × (2.8) 3.4 – 4.6 (4.8) µm; Q = (1.5) 1.7 – 2.1 (2.3); N = 30; Me = 7.4 × 4 µm; Qe = 1.9

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Additional notes for sequences (bases on the right):

ITS:

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Originally posted to Mushroom Observer on Dec. 25, 2021.

Growing on unknown herbaceous plant stems in a Sphagnum bog. Basidiocarps spiny and white; with distinct heads; up to 1.2 mm tall and 0.5 mm wide. Monomitic with simple-septate generative hyphae. Large, thick-walled cystidia present on all surfaces. Basidia 2-sterigmate. Spores hyaline, inamyloid, smooth, and thin-walled. Spore measurements: (7.4) 9.6 – 11.6 (12.6) × (6.7) 8 – 9.7 (10.5) µm; Q = (1) 1.1 – 1.3 (1.4); N = 30; Me = 10.5 × 8.8 µm; Qe = 1.2

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Additional notes for sequences (bases on the right):

ITS:

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Originally posted to Mushroom Observer on Nov. 26, 2022.