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(A–B) Ultrastructural details of mature spores of Toguebayea baccigeri n. gen., n. sp observed in longitudinal ultrathin sections. The polar tube (PT) coils are arranged in two rows slightly overlapping each other (white arrows). AP, anterior polaroplast; En, endospore; Ex, exospore; M, manubrium; N, nucleus; PP, posterior polaroplast; PS, polar sac; PV, posterior vacuole; R, ribosomes and polyribosomes. Scale bars = 0.5 μm.
