Morphology of Buwchfawromyces eastonii. Sporangia are ovoid (A) to spherical (B), tending to be more elongate when growing on straw particles (C). Zoospores are uniformly monoflagellate (D). A distinct septum is visible where the sporangium is attached to the sporangiophore (A, E, G, H arrowed) and sporangiophores are often swollen (E–H). Nuclei were not observed in sporangiophores or rhizoids (F, H, I). Scalebar indicates 50 µm.