Diderma effusum (Schwein.) Morgan, J. Cincinnati Soc. Nat.Hist.

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 : 21-22

45. Diderma effusum (Schwein.) Morgan, J. Cincinnati Soc. Nat.Hist. 16(4): 155 (1894)

Specimens examined. PERU. Ancash: Huaraz, Independencia, Huaraz , route AN-139, km 12,5, 3690 m, 9º29′29”S, 77º28′24”W, 9 May 2018, stem of Bomarea involucrosa, Lado 26177 (MA-Fungi 96981), Lado 26185 (MA-Fungi 96990). Huari, Chavín de Huantar , route AN-110, km 51, 3766 m, 9º40′12”S, 77º11′59”W, 11 May 2018, leaves of Alchemilla orbiculata alive, Lado 26368 (MA-Fungi 97157), Lado 26369 (MA-Fungi 97158), leaves and twigs of Alchemilla pinnata, Lado 26371 (MA-Fungi 97160). Huari, Huamparán, 10 km south of Huachococha lagoon and 14 km north of Huamparán , 4162 m, 9º11′39”S, 77º12′42”W, 12 May 2018, leaf litter and herbs, Lado 26416 (MAFungi 97203) . Ayacucho: Huamanga, Quinua, route PE-28B, km 30, Quinua , 3926 m, 13º00′19”S, 74º06′27”W, 20 Apr 2017, leaves of Polylepis racemosa, Lado 24867b (MA-Fungi 96071). Ocros, route PE-3S, km 470, Ocros, 3863 m, 13º22′41”S, 73º57′09”W, 21 Apr 2017, bryophytes on an oozing slope, Lado 24922 (MA-Fungi 96121, USM) . Cusco: Anta, Chinchaypujio, Parccotica , Chinchipuya , Km 8,650, 3608 m, 13º34′07”S, 72º14′27”W, 17 Apr 2016, Alnus acuminata catkin, Lado 24440 (MA-Fungi 95779). Cusco, Pisac, Tambomachay, route PE-28G, Km 11, 3763 m, 13º28′53”S, 71º57′50”W, 16 Apr 2016, bark of Polylepis sp. , Lado 24348 (MA-Fungi 95691, USM), Lado 24360 (MA-Fungi 95702, USM), Lado 24371 (MA-Fungi 95712), Lado 24378c (MA-Fungi 95721), Lado 24382 (MA-Fungi 95724), bryophytes, Lado 24386 (MA-Fungi 95727). Quispicanchi, Ccatca, Lahualahua, route PE-30C, Km 39.5, 3685 m, 13º38′57”S, 71º27′34”W, 15 Apr 2016, bark and leaf of Polylepis sp. , Lado 24331 (MA-Fungi 95674, USM), Lado 24333b (MA-Fungi 95677) . Huancavelica: Angaraes, Julcamarca, route PE-26B, km 146, Julcamarca , 3492 m, 13º00′45”S, 74º26′18”W, 22 Apr 2017, leaves of Baccharis sp. , Lado 24977 (MA-Fungi 96175). Julcamarca, route PE-26B, km 146, Julcamarca, 3400 m, 13º01′52”S, 74º25′56”W, 22 Apr 2017, leaf litter of Alnus acuminata, Lado 25020 (MA-Fungi 96214), Lado 25021 (MA-Fungi 96215), Lado 25029 (MA-Fungi 96223), Lado 25030 (MA-Fungi 96224), bryophytes, Lado 25034 (MA-Fungi 96228, USM), Lado 25035 (MA-Fungi 96229), leaves of Alnus acuminata, Lado 25036a (MA-Fungi 96230), Lado 25037 (MA-Fungi 96232). Castrovirreyna , Castrovirreyna , Pacococha lagoon, route PE-3A, km 80, to 10 km at NE de Castrovirreyna, 4410 m, 13º14′26.3”S, 75º17′04.6”W, 25 Sep 2012, branch of Asteraceae, Lado 21805a (MA-Fungi 94573) .

Notes. Spores in collections Lado 24348, 24360, 24371, 24378, and 24382 do not show grouped warts, a feature typical of this species, which could indicate poorly developed material.