Fig. 11.

Helminthosporium microsorum, asexual morph. A. Colony in face view. B. Two punctiform conidiomata in face view. C. Conidioma in side view. D. Old stroma of Coryneum in section below Helminthosporium conidioma. E. Conidiophores. F, I. Conidiophore apices with apical and lateral pores (arrows). G. Conidiophore base and stroma cells in section. H. Stroma cells in section. J–U. Conidia (vital in J–T, dead in U). All in water, except I. in 3 % KOH. A–C, E–H. WU 38861; D, N, O, Q–S. WU 38860; I. WU 38858; J–M, P, T, U. WU 38850 (epitype). Scale bars: A = 2 mm; B, D = 200 μm; C = 100 μm; E = 50 μm; F–U = 10 μm.