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

Classification: Pezizaceae, Marcelleina

Created on 23/12/2023.

Updated on 23/12/2023.