Morchella iberica Marcos Martínez, Sanjaume & Clowez, Ascomycete.org 12(1): 11-18. 2020. [pdf]
MycoBank MB834421
AUTHORS: Marcos Martínez J.; Clowez P.; Sanjaume R.; Marques G.; Bellanger J.-M. & Moreau P.-A.
Taxonomic classification
phy Ascomycota
sbp Pezizomycotina
cls Pezizomycetes
sbc Pezizomycetidae
ord Pezizales
fam Morchellaceae
gen Morchella
sp Morchella iberica
Description
Mitra small, of up to 7 cm high and up to 5 cm broad, hollow and slightly elastic, initially troncoconical, ovoid or subglobose with an obtuse apex, with tendency to become longer with age. Internal surface furfuraceous. Primary ribs longitudinal, rather sinuous and anastomosing. Surface smooth, rather broad and even. Colour variable with age, generally concolorous with the hymenium, initially whitish or pale yellow, with age olivaceous brown, tending to blacken, especially towards the apex. Secondary ribs longitudinal, poorly differentiated and depressed. Primary alveoles shallow, rather irregular, tightly arranged, sinuous, irregularly arranged vertically, bumpy at the bottom. Secondary alveoles shallow and poorly differentiated. Hymenium of variable colour, initially whitish or pale yellow, acquiring olivaceous brown or reddish brown tones with age. Valecula broad and well defined, of 1-2 cm deep, half-free at 1/3 of its length, white, rather uneven with age. Stipe 2-10 x 1-3 cm, hollow, brittle, subcylindrical or slightly broader at the base, initially shorter than the mitra but becoming longer with age. Surface whitish to pale ochraceous, acquiring ochraceous grey when handled, densely furfuraceous, with pyramidal granules that become dark with age. Context rather thin, whitish, becoming yellowish tones towards the margin, of elastic consistency in the mitra but rather brittle in the stipe. Odour complex, raphanoid and spermatic, stronger when handled or with age. Taste pleasant. Spore print pale yellow, almost white. Macrochemical reactions not checked.
Ascosporas 22-25 x 15-16 µm and Q = 1,52 normally, ellipsoid, smooth and hyaline. Asci 8-spored, non-amyloid, cylindrical, 350-520 x 14-17 µm, pleurorrhynchous. Paraphyses numerous, cylindrical, septate, rarely forked, with 1-3 elements by branch and the terminal element subcylindrical, slightly longer than the rest, up to 150 x 15 µm, with the apex rounded and of variable shape (broadened, rhomboid or slightly capitate). Heteroparaphyses scarce, undistinguishable from paraphyses in age. Acroparaphyses long, cystidioid, with 0-2 septa, 100-110 x 20-30 µm, with the terminal element subcylindrical, with a rounded and rather broadened apex. Pyramids long, composed by a layer of sphaerocysts of 35-60 x 40-50 µm, from which cylindrical hairs arise, of 35-110 x 8-15 µm, with 0-3 septa, with the terminal element subcylindrical, tapering progressively towards the apex.
Habitat and distribution: Species that produces ascomata in spring, solitary or in small groups, and only known in Spain and Turkey, although it is likely to be found in other Mediterranean countries. In Spain only 3 collections are known, collected in riparious forests with presence of Fraxinus excelsior and/or native poplars (Populus spp.), often mixed with ascomata of Morchella semilibera. Two specimens are known from Turkey (HT213 y HT215), collected under Castanea sativa and erroneously identified as M. semilibera.
References in our territory
- Clowez P, Marcos J, Sanjaume R, Marques G, Bellanger JM & Moreau P-A. 2020. A survey of half-free reveals a new species: Morchella iberica sp. nov. (Ascomycota, Pezizales). Ascofrance.org 12 (1): 11-18. (Esp: Ge, Hu, Va) [pdf]
- CLOWEZ, P. & P.-A. MOREAU (2020). Morilles de France et d’Europe. Cap Régions Éditions. 370 pp. [pdf]
Specimens in scientific collections
* sequenced material
Reference specimen marked in bold
Ge: PhC335 (LIP 0001675, holotypus)*; JMM0016 (isotypus)*
Hu: PhC181 (LIP 0001676)*;
Va: PAM16042501 (LIP 0401128)*; JMM0036*
Sequences in public databases obtained from material collected in our territory
PhC335 (LIP 0001676): MN442340 (ITS); MN840852 (28S); MN850425 (RPB1); MN850426 (RPB2); MN850427 (TEF1)
PAM16042501 (LIP 0401128): MN442334 (ITS)
PhC181 (LIP 0001676): MN442331 (ITS)
JMM0016: MN442537 (ITS)
JMM0036: MN442536 (ITS)
Ascomata of M. iberica (JMM0016, isotypus). Photograph R. Sanjaume.
Ascomata of M. iberica (JMM0036). Photograph J. Mateos.
Ascospores of M. iberica (PhC 335, holotypus) (†) a 1000X, in PhC2 dye. Photograph: P. Clowez.
Microscopic characters of M. iberica (PhC335, holotypus) (†). 1) Paraphyses and asci at 700X, PhC1 dye; 2) Heteroparaphyses at 200 X, in PhC1 dye; 3) Acroparaphyses at 700 X, in PhC1 dye; 4) Pyramids at 700X in PhC1 dye. Photographs P. Clowez.
How to cite this sheet:
Marcos Martínez J., Clowez P., Sanjaume R., Marques G., Bellanger J.-M. & Moreau P.-A. 2020. Morchella iberica Marcos Martínez, Sanjaume & Clowez. Fichas SIM (Updated on 29-X-2020).
