The type material in the David W. Mitchell myxomycete collection at the Royal Botanic Garden, Kew Author Lado, Carlos 0000-0002-6135-2873 Real Jardín Botánico, CSIC, Plaza de Murillo 2, 28014 Madrid (Spain) Author Basanta, Diana Wrigley De 0000-0002-7700-8399 Real Jardín Botánico, CSIC, Plaza de Murillo 2, 28014 Madrid (Spain) text Phytotaxa 2024 2024-05-20 649 2 135 158 http://dx.doi.org/10.11646/phytotaxa.649.2.1 journal article 10.11646/phytotaxa.649.2.1 1179-3163 13215967 Echinostelium colliculosum K.D. Whitney & H.W. Keller, Mycologia 72(3):641 (1980) Paratypus : USA . California , Lassen Co., ½ miles N.E. of Eagle Lake Field Station, on bark of Juniperus occidentalis in moist chamber, 13 Jul 1977 , leg. K.D. Whitney 639, DWM 3650 [one slide, K-M001435039], ( Fig. 4B ). Notes. This slide is one of the paratypes sent by the authors to various institutions and individuals: UC, NY, K, C.J. Alexopoulos, D.T. Kowalski and N.E. Nannenga-Bremekamp ( Whitney & Keller 1980: 642 ). In BPI there are two boxes with the holotype of this species, BPI 805798, BPI 819049.