Marcelleina tuberculispora

Coll. MV20230305-09
Coll. MV20230305-09
© M. Vega

Marcelleina tuberculispora K. Hansen & Sandal, Nordic J. Bot. 18 (5): 622 (1998).

 

Basionym Marcelleina tuberculispora K. Hansen & Sandal, Nordic J. Bot. 18 (5): 622 (1998).

Diagnosis Apothecia discoidea vel pulvinata, sessilia 1.8-3.5 mm diametro; hymenio atroviolaceo ( 16F5-6), extus pallidiora, glabra vel pubescentia. Excipulum exterius c. 20-30 µm crassum, vix conspicue, e cellulis hyalinis, globosis vel angularibus, c. 8-11 µm latis, in uno vel duobus stratis collocatis compositum, ex quibus series dispersae et breves cellularum, aliquae quarum claviformes, c. 9-11 × 19-22 µm, procurrent. Excipulum medullare c 200-300 µm crassum, textura angulari, cellulis hyalinis, inaequalibus, 10.0-37.5 µm crassis. Subhymenium 50-75 µm crassum, textura intricata, cellulis hyphoidibus dense intertextis, 7.5 × 17.5 (-20.0) µm crassis. Sectio subhymenii in aqua posita porphyrea, densa. Margo c. 60 µm crassa, e cellulis in seriebus ad superficiem parallelis composita, plana vel parum sub hymenio, apicem versus gradatim decrescens. Hymenium 250 µm crassum. Sporae unifariae, globulares, 11.3-11.8-12.5 µm diametro, hyalinae, guttulam singulam continentes, in LM verrucas magnitudine variabiles, in SEM verrucas densas, humiles, rotundatas et in magnitudine variabiles, c. 0.4-1.9 µm latas et c. 0.4-1.3 µm altas, exhibentes. Pars superior paraphysum et ascorum porhyrea videtur, sed sedes pigmenti difficile agnoscitur. - Figg. 17-20.

Type C KS.-All-94-8 - holotypus

Synonyms
Marcelleina mediterranea Lantieri & Pfister, Mycotaxon, 111: 466 (2010), fide Sammut et al. (2023).

MycoBank 446531

 

Literature
Hansen K., Sandal S.K., Dissing H. 1998. New and rare species of Pezizales from calcareous woodlands in Denmark. Nordic Journal of Botany, 18: 611-626.
Lantieri A., Pfister D.H. 2010. A new species of Marcelleina from Italy. Mycotaxon, 111: 465-469.
Sammut C., Alvarado P., Van Vooren N. 2023. Emendation of Marcelleina Brumm., Korf & Rifai (Ascomycota, Pezizales) and proposal of Iodomarcelleina obscura gen. nov., sp. nov. and Scotopezia pseudoanthracina gen. nov., comb. nov. for the lineages outside it. Ascomycete.org, 44 (12): 159-170.

Classification: Pezizaceae, Marcelleina


Created on 23/12/2023.

Updated on 23/12/2023.

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