Clades:
Pezizales; Pezizomycetes;
Ascomycota;
Fungi;
Plants.
Genera: 4 genera; 49 species.
Genera, terrestrial: Costantinella, Disciotis, Morchella, Verpa.
Genera, hypogeous: Kalapuya, Imaia, Leucangium, Fischerula.
Mycology:
TaxonomyAnalysis of the ribosomal DNA of many of the
Pezizales showed the three genera Verpa, Morchella, and Disciotis to be closely related, distinguished by ascocarp morphology; Costantinella is an anamorph genus; four hypogeous sequestrate genera were added later; Morchella has an ascocarp with a sponge-like pileus, with a hollow stipe and pileus; Verpa has a cup-like or thimble-shaped, smooth or wrinkled pileus above a hollow stipe; Disciotis has a cup-like pileus with vein-like hymenial folds and a small or nonexistent stipe; the ascospores are ellipsoid, smooth, and usually hyaline.