Amaurochaete comata G. Lister & Brândză

Moreno, G., Castillo, A. & Thüs, H., 2018, Critical revision of type material of Stemonitales (Myxogastria) at the Natural History Museum London (BM), Phytotaxa 344 (2), pp. 149-159 : 150

Amaurochaete comata G. Lister & Brândză

Etalium pulvinate, with blackish gloss below the pruina, 5–10 mm in diameter, with fragile peridium. Capillitium formed by narrow filaments 1–2 μm in diam., elongate, flexuous, dark and branched, attached to the peridium and to the base of the aethalium. Columella absent. Spores globose to subglobose, (11–) 11.3–13.7 × (11–) 11.1–12.9 (–13)

μm, av. 12.5 × 12 μm, Q av = 1.04 (n = 25), dark, warty by LM. Under SEM the ornamentation is formed by dense and thick warts, uniformly distributed, sometimes together forming a short crest.We have not seen any less ornamented area both under the LM and SEM, as indicated in the original description of this species ( Figs. 1a–g ).

Figures

FIGURE 1. Amaurochaete comata G. Lister & Brândză (type): a. Etalium [box: BM001089979], b–c. Capillitium by LM [slide: BM001247193], d. Capillitium by SEM [stub: BM001247201], e–g. Spores, g. Details of spore ornamentation. Bars: a = 0.1 mm, b–c = 50 μm, d = 10 μm, e–f = 2 μm, g = 1 μm.