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. 2017 May 13;87:43–76. doi: 10.1016/j.simyco.2017.05.001

Fig. 12.

Fig. 12

Helminthosporium oligosporum, sexual (A–V) and asexual (W–X1) morph. A. Three ostioles in face view. B–D. Ascomata in horizontal (B, C) and vertical (D) section, surrounded by a well-developed pseudostroma (B, D. showing fresh hydrated ascomata). E. Peridium and pseudostroma in section. F. Ascus with vital ascospores. G. Pseudoparaphyses. H–V. Mature vital ascospores surrounded by gel sheath; in M. showing germinating ascospore, in N. verruculose ascospore wall. W–Y. Conidiomata in face view. Z. Conidioma on old Hercospora tiliae stroma in vertical section. A1. Old stroma of Hercospora tiliae in section below conidioma. B1–D1. Conidiogenous cells with apical pore and young conidium (D1). E1–X1. Vital conidia (young in E1–H1, mature in I1–X1). All in water. A, B, D, G–R, Y. WU 38866; C, E, F, S–V, P1. WU 38864 (epitype); W, X, B1–E1, I1–M1, O1, Q1–W1. WU 38867; Z, A1, F1–H1. WU 38870; N1, X1. WU 38872. Scale bars: A, X, Y = 500 μm; B–D, A1 = 200 μm; E, F = 20 μm; G–V, B1–X1 = 10 μm; W = 1 mm; Z = 300 μm.