Didymium cf. anomalum (Rostaf.) Massee, Monogr. Myxogastr.

Treviño-Zevallos, Italo, García-Cunchillos, Iván, Basanta, Diana Wrigley De & Lado, Carlos, 2023, Diversity of Myxomycetes from Peru Part III: The high Andes and the altiplano, Phytotaxa 624 (1), pp. 1-92 : 27

56. Didymium cf. anomalum (Rostaf.) Massee, Monogr. Myxogastr. 245 (1892)

Specimens examined. PERU. Arequipa: Arequipa, San juan de tarucani, Carretera San Juan de Tarucani-Huayllacucho , 3921 m, 16°05′51”S, 71°09′18”W, 16 May 2017, on leaf litter of Parastrephia quadrangularis, Treviño Myx 77 (MA-Fungi 97922, HSP) . Ayacucho: Huamanga, Chiara, route PE-3S, km 415, Chiara , 3850 m, 13º18′49”S, 74º13′27”W, 21 Apr 2017, leaf of grass, Lado 24974 (MA-Fungi 96172) . Huancavelica: Tayacaja, Ñahuimpuquio, route PE-3S, km 160, Acostambo , Imperial , 3700 m, 12º19′22”S, 75º04′37”W, 25 Apr 2017, leaves of Baccharis sp. , Lado 25266 (MA-Fungi 96425), Lado25268 (MA-Fungi 96427), Lado 25269b (MA-Fungi 96429) . Junin: Concepción, Chambara, route PE-24, km 249, 8 km west of Roncha , 3465 m, 11º59′49”S, 75º28′22”W, 28 Apr 2017, twigs of Ageratina sternbergiana, Lado 25529 (MA-Fungi 96687). Yauli, Chacapalpa, route PE-3S, km 35, Chacapalca, 3623 m, 11º43′37”S, 75º45′18”W, 29 Apr 2017, twigs of Ageratina sternbergiana, Lado 25562 (MA-Fungi 96718, USM), Lado 25564 (MA-Fungi 96720). Paccha, La Oroya, route PE-3N, km 6, 6 km north of La Oroya , 3706 m, 11º29′29”S, 75º56′36”W, 1 May 2017, twigs, Lado 25714 (MA-Fungi 96867) .

Notes. The studied specimens differ from the typical form of the species by the columella, reduced to a basal protuberance or inconspicuous instead of prominent and conspicuous ( Poulain et al. 2011, Nannenga-Bremekamp 1991). Lado et al. (2016) also noticed these differences in Peruvian specimens from the coastal desert and Lomas formations.