Hallo Peter,
es gibt mittlerweile reichlich Literatur zu Morcheln. Weiterführend ist z.B. (nach Erscheinungsjahr sortiert):
Buscot F, Roux J (1987) Association between living roots and ascocarps of Morchella rotunda. Transactions of the British Mycological Society 89(2): 249-252.
Buscot F, Kottke L (1992) The association of Morchella rotunda (Pers.) Boudier with roots of Picea abies (L.) Karst. New Phytologist 116: 425-430.
Clowez P (1997) Les morilles de stratégie pérenne et colonisatrice: relations avec certaines arbres et plants mellifères d'apparition spontenée en France. Etude comportementale. Documents mycologiques 27(107): 15-29.
Kellner H, Renker C, Buscot F (2005) Species diversity within the Morchella esculenta group (Ascomycota: Morchellaceae) in Germany and France. Organism, Diversity and Evolution 5: 101-107.
Masaphy S et al. (2010) The Complexity of Morchella systematics: A case of the yellow morel from Israel. Fungi 3(2): 14-18.
O'Donnell et al. (2011) Phylogeny and historical biogeographie of true morels (Morchella) reveals an early Cretaceous origin and high continental endemism and provincialism in the Holarctic. Fungal Gentics and Biology 48: 252-265.
Clowez P (2012 "2010") Les morilles. Une nouvelle approche mondiale du gerne Morchella. Bulletin de la Société mycologique de France 126: 199-376.
Du X-H et al. (2012) How well do ITS rDNA sequnces differenciate species of true morels (Morchella)? Mycologia 104: 351-1368.
Kuo M et al. (2012) Taxonomic revision of true morels (Morchella) in Canada and the United States. Mycologia 104: 1159-1177.
Richard F et al. (2015) True Morels (Morchella, Pezizakes) of Europe and North America: Evolutinary relationships inferred from multilocus data and a unified taxonomy. Mycologia 107(2): 359-382.
Li Q, Xiong C, Huang W, Li X (2017) Controlled surface fire for improving yields of Morchella importuna. Mycological Progress 16: 1057-1063.
Liu Q, Ma H, Zhang Y, Dong C (2017) Artificial cultivation of true morels: current state, issues and perspectives. Critical reviews in Biotechnology 32(8): 259-271.
usw. usw.
Gerade frisch erschienen ist ein Buch über Morcheln:
Clowez P, Moreau P-A (2020) Morilles de France et d'Europe. Verlag Cap Régions Éditions, Noyon, 370 S.
Dort ist natürlich auch die gesamte wichtige Literatur gelistet.
beste Grüße,
Andreas