5. Arcyria denudata (L.) Wettst., Verh. Zool.-Bot. Ges. Wien 35: 535 (1886)

Specimens examined. PERU. Ancash: Huari, Huari, Colcas, 10 km south of Huamparán, 3084 m, 9º18′55”S, 77º10′02”W, 12 May 2018, woody debris, Lado 26380 (MA-Fungi 97170). Yungay, Yungay, Huascaran N.P., Llanganuco sector, Chinancocha lagoon, route AN-106, km 25,500, 3844 m, 9º04′41.6”S, 77º39′06.9”W, 19 Apr 2013, branches of Polylepis sp., Lado 22923 (MA-Fungi 95125, USM) . Apurimac: Abancay, Tamburco, Abancay, Ampay National Sanctuary, canal dam, 3124 m, 13º35′56”S, 72º52′44”W, 20 Apr 2016, wood, Lado 24575 (MA-Fungi 95852, USM), Lado 24587 (MA-Fungi 95863) .

Notes. Collection Lado 24575 has the tallest sporophores, up to 3 mm, and is brownish. On the contrary, collection Lado 26380 shows the smallest sporophores and greyish-yellow colour, possibly due to the senescence stage of the samples.