Morchella rufobrunnea

Morchella rufobrunnea Guzmán & F. Tapia, Mycologia 90: 706. 1998 [pdf]

MycoBank     MB445064

Authors:  Marcos Martínez J.; Marques G.; Costa, A.; Romera, M.;  Olivera, M; Calderón F.  Mir G.; Tejera J.D. & F. García


Taxonomic classification

phy Ascomycota

       sbp Pezizomycota

               cls Pezizomycetes

                     sbc Pezizomycetidae

                            ord Pezizales

                                 fam Morchellaceae

                                        gen Morchella

                                              sp Morchella rufobrunnea


Mitra medium-sized, up to 12 cm high and 4 cm broad, hollow, initially narrowly conical, occassionally subglobose or ovoid, with the apex generally acuminate. Surface internally furfuraceous. Primary ribs lontigudinally, rather thick, moderately distant, slightly sinuous, strontly anastomosing. Colour variable with age, generally concolorous with hymenium, initially whitish, finally turning ochre and tending to stain rust brown with age. Secondary ribs transversally oriented, not conspicuous and depressed, concolorous with alveoli, sometimes slightly blackening with age, sometimes leaving small aborted appendixes. Prmary alveoli broad, elongated, irregular, more or less angled, vertically aligned, bumpy at the bottom. Secondary alveoli not very deep, not very well defined, scarce. Hymenium variable in colour with age, initially blackish or greyish brown, contrasting with the whitish ribs in young ascomata, turning ochraceous and concolous with ribs with age. Stipe  2-5 × 1-2 cm, hollow, subcylindrical, broader at the base, twice as short as the mitra. Surface wrinkled, covered with a thin covering, greyish brown in young ascomata, disappearing with age, formed by small greyish brown granules, rather conspicuous with age, staining orangish red upon handling. Context elastic, whitish in the mitra, yellowish in the stipe. Smell weak. Macrochemical reactions not tested.

Ascospores 22-25 × 13-15 µm, Qm = 1,65, ellipsoid to ovoid, hyaline, thick-walled, longitudinally striate. Asci 8-spored, not amyloid, cylindrical, generally with uniseriate ascospores, 270-370 × 15-25 µm, with a somewhat broader base, aporhynchous. Paraphyses fascicled, sometimes formed at the base, generally lanceolate, up to 15 × 280 µm, with the terminal element longer, subcylindrical or fusiform with a generally obtuse apex.  Acroparaphyses very abundant, fascicled,  40-200 × 7-20 µm, sometimes forked at the base. Pyramids composed of an epithelium of subglobose to ovoid sphaerocysts,  20-100 × 20-70 µm, of which subcylindrical hairs arise,  50-150 × 10-20 µm, generally fascicled, scarcely septate, (0-2 septa), with the terminal element subcylindrical with the apex broad and rounded.

References in our territory
  • BLANCO-DIOS, J.B. & GRUPO ECOLOGISTA ADENCO (2020). Morchella rufobrunnea en Galicia (noroeste de la Península Ibérica. Yesca 32: 124-132. (Esp: Po) [pdf]
  • CLOWEZ, P. & P.-A. MOREAU (2020). Morilles de France et d’Europe. Cap Régions Éditions. 370 pp [pdf]
  • MARCOS, J. (2017a). Aportación al catálogo micológico de la provincia de Cuenca I: Ascomycetes. Micobotánica Jaén. Año XII. 3. Julio-Setiembre: 115 – 172. [pdf]
  • MARCOS-MARTÍNEZ, J.; MIR, G. & G. MARQUES (2021). El género Morchella ex Pers. en Illes Balears. Micobotánica Jaén. Año XVI. Nº1. Enero-Marzo (Esp: Ca, Cu, H, Mll, Po, V) [pdf]
Specimens in scientific collections

* sequenced material (ITS). In bold reference specimen. JMM (private herbarium J. Marcos); GM (herb. G. Mir); LOU-Fungi (herb. Centro de Investigación Forestal de Lourizán (Pontevedra).

  • Ca: JMM0088, JMM0089
  • H: JMM0004*
  • Mll: GM070420
  • Po: LOU-Fungi 20146; LOU-Fungi 20147
  • V: JMM0040*
Sequences in public databases obtained from material collected in our territory

FIg. 1.  Morchella rufobrunnea. A) Mature ascoma (JMM0040). Photograph: J.D. Tejera . B). Mature ascoma (JMM0004). Photograph: F. García.

Fig. 2. Juvenile ascomata of  M. rufobrunnea (JMM0089). Photograph: M. Romera:

Fig. 3. Mature ascomata of  M. rufobrunnea (JMM0088). Photograph: M. Olivera.


Fig. 4. Microscopic characters of M. rufobrunnea (JMM0004) (†). A) Ascospores. B) Paraphyses C) Asci. D) Acroparaphyses. E) Pyramids Illustrations: J. Marcos.















How to cite this sheet:

Marcos Martínez J.; Marques G.; Costa, A.; Romera M.; Olivera M.;  Calderón F.; Mir G.; Tejera J.D. & García F. 2023 . Morchella rufobrunnea Guzmán & F. Tapia. Fichas SIM 37 (Updated on 24-III-2023). DOI:
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