Scanning electron micrographs of Oocephala staehelinoides (Harv.) H. Rob. & Skvarla. A Unacetylized grain showing three pores with caps intact, two pores in adjacent lacunae B–D Intact or nearly intact grains showing pores in both pentagonal and hexagonal lacunae B with pores in adjacent lacunae E Grain stripped of muri showing five pores and stubs of muri attachments F Segment of muri showing rhizomate structure and remnants of weak basal attachments to footlayer, (p) pore. A–F are from collection of Liebenberg 8843.