Critical revision of type material of Stemonitales (Myxogastria) at the Natural History Museum London (BM) Author Moreno, G. gabriel.moreno@uah.es Author Castillo, A. gabriel.moreno@uah.es Author Thüs, H. Current Address: State Museum of Natural History Stuttgart, Germany. & The Natural History Museum, London, United Kingdom text Phytotaxa 2018 2018-03-14 344 2 149 159 http://dx.doi.org/10.11646/phytotaxa.344.2.3 journal article 10.11646/phytotaxa.344.2.3 1179-3163 Comatricha pulchella (C. Bab.) Rostaf., Sluzowce monogr. suppl. 27 (1876) = Comatricha persoonii var. fusca Lister, J. Bot., Lond. 35: 215 (1897) = C. pulchella var. fusca (Lister) G. Lister , in Lister, Monogr. Mycetozoa, ed. 2 156 (1911). Syntype :— UNITED KINGDOM , England, Essex , Greater London, Wanstead Park, on dead leaves under brambles, September 1896 , A. Lister BM 1715 [BM001089759 = box, BM001247190 = slide, BM001247198 = SEM stub]. Lister (1911) separated Comatricha pulchella var. fusca from C. pulchella var. pulchella by its more rigid, purplish brown capillitium and pale greyish brown spores from C. pulchella var. fusca . However both names are now seen as synonyms ( Lado 2005 –2017) and our observations on the surface structure of the spores by SEM confirm this view.