Diachea mitchellii Lado & Trevino
Creators: name: Treviño-Zevallos, Italo
name: García-Cunchillos, Iván
name: Basanta, Diana Wrigley De
name: Lado, Carlos
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Protozoa
Mycetozoa
Myxomycetes
Physarales
Didymiaceae
Diachea
Diachea mitchellii

description: 38. Diachea mitchellii Lado & Treviño, in Lado, Treviño-Zevallos, García-Martín & Wrigley de Basanta, Mycologia 114(4): 802 (2022)   
 Specimens examined. PERU. Ancash: Bolognesi, Pachapaqui, San Judas Tadeo, route PE-3N, km 35, 3828 m, 9º59′23.5”S, 77º06′40.9”W, 23 Apr 2013, bark and leaves of Polylepis sp., Lado 23139 (MA-Fungi 91227), Lado 23140 (MA-Fungi 95295, USM). Recuay, Catac, route AN-110, km 18, Querococha lagoon, 4040 m, 9º43′27”S, 77º20′02”W, 24 May 2014, bark and wood of Polylepis sp., Lado 23848 (MA-Fungi 95501), branches of Polylepis sp., Lado 23862 (MA-Fungi 95512). Ticapampa, Catac, route AN-110, km 22, 4150 m, 9º43′18”S, 77º19′19”W, 11 May 2018, leaf litter and bark of Polylepis sp., Lado 26319 (MA-Fungi 97117). Ayacucho: Lucanas, route PE-30A, km 103, 4 km east of Abra Condorcenca, 3947 m, 14º38′28.1”S, 74º17′57.8”W, 27 Sep 2012, bark of Polylepis sp., Lado 21829 (MA-Fungi 94601), wood of Polylepis sp., Lado 21833 (MA-Fungi 91211), bark of Polylepis sp., Lado 21834 (MA-Fungi 91212, USM), Lado 21837 (MA-Fungi 94608, USM), grasses, Lado 21852 (MA-Fungi 94618), bark of Polylepis sp., Lado 21858 (MA-Fungi 94625, USM), Lado 21867 (MA-Fungi 94634). Cusco: Canas, Kunturkanki, route from El Descanso to Sicuani, Km 6, 4085 m, 14º29′08”S, 71º17′42”W, 22 Apr 2016, branch and brak of Polylepis sp., Lado 24672 (MA-Fungi 95941, USM). Huancavelica: Huancavelica, Acoria, route PE-26, km 39, Ccaccasiri, 3875 m, 12º38′32”S, 74º55′06”W, 25 Apr 2017, leaves, bark and twigs of Polylepis racemosa, Lado 25223 (MA-Fungi 96407, USM), Lado 25225 (MA-Fungi 96409, USM), Lado 25230 (MA-Fungi 96415, USM), Lado 25235 (MA-Fungi 96420, USM). Huaytara, Pilpichaca, KP391, southern Peruvian gas pipeline, 3853 m, 13°26′41”S, 74°55′30”W, 31 August 2017, on rhytidome (debris) of Polylepis, Treviño Myx 125 (MA-Fungi 97929, HSP). Junin: Concepción, Chambara, route PE-24, km 254, 3 km west of Roncha, 3428 m, 12º00′32”S, 75º26′50”W, 28 Apr 2017, bark and leaves of Polylepis racemosa, Lado 25538 (MA-Fungi 96696, USM, HSP). Huancayo, Huancayo, route 108, km 10, 8 km southwest of Acopalca, 3505 m, 12º00′18”S, 75º09′38”W, 27 Apr 2017, bark and leaves of Polylepis racemosa and Eucalyptus globulus, Lado 25451 (MA-Fungi 96604, USM). Yauli, 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, leaves and bark Polylepis racemosa and grasses, Lado 25663 (MA-Fungi 96821, USM), Lado 25666 (MA-Fungi 96824), Lado 25676 (MA-Fungi 96834), Lado 25677 (MA-Fungi 96835, USM), Lado 25678 (MA-Fungi 96836, USM), Lado 25682 (MA-Fungi 96840, USM), Lado 25684 (MA-Fungi 96842, USM), leaves and bark of Polylepis racemosa and leaves of Cortaderia jubata, Lado 25685 (MAFungi 96843), Lado 25686 (MA-Fungi 96844). Moquegua: Mariscal Nieto, Torata, Pontón Cuellar, route PE-34D, km 69, 3815 m, 16º59′54.8”S, 70º41′54.7”W, 7 Oct 2012, bark of Polylepis rugulosa, Lado 22176 (MA-Fungi 94731), Lado 22177 (MA-Fungi 94732).   
 Notes. A recently described species by Lado et al. (2022) from Peru possesses an iridescent peridium (Fig. 3D), a columella with irregular projections arranged in a reticulate fashion and spores in easily dissociable clusters, (3)5– 8(10) spores per cluster (Fig. 3E). This species is the first one with this type of columella in the genus Diachea (Martin & Alexopoulos 1969, Farr 1976, Poulain et al. 2011). Diachea mitchellii has been exclusively reported from Polylepis forests, being exceedingly abundant there.
description: Published as part of 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, pp. 1-92 in Phytotaxa 624 (1) on page 20, DOI: 10.11646/phytotaxa.624.1.1, http://zenodo.org/record/10150721